Hot Tub Jets Turn On By Themselves? The 25 Correct Answer

Whether you’re the proud owner of a new hot tub or you drain and refill your hot tub as part of your regular maintenance schedule, sooner or later every spa owner asks a question: How do I make my hot tub perfect? heat up faster?

We get it. Nobody likes to wait hours for a spa full of cold water. You just want it to be up to temperature so you can jump in, sit back, and start soaking as soon as possible.

Here’s a list of our favorite tips for speeding up the heating of the water in your hot tub. From simple suggestions you can try for free to products that will serve you for years to come, rest assured you won’t have to wait as long as you thought.

1. Leave the cover on

One of the easiest ways to heat up your hot tub faster is to make sure your cover is in place, secured properly and covering the entire surface of your hot tub.

Hot tub covers are insulated and designed to keep dirt out and heat in. Without the cover, your hot tub’s heat can escape from the water surface and your hot tub’s heater has to work harder to bring it up to temperature.

So don’t let the cover down and watch the water heat up. By sealing the entire top of the hot tub, you ensure that the heat generated is contained within the tub itself – and not escaping and being wasted.

2. Turn on the jets

Before covering your hot tub, be sure to turn on the jets as this will increase the rate at which your hot tub heats up.

By running the jets, you circulate the heated water and distribute it evenly to all areas of the spa.

This helps to disrupt and break up pockets of cold water or areas in your hot tub that may not heat up as evenly when standing still.

3. Use a thermal bath blanket

Spa Depot Thermo-Float Hot Tub Bubble Cover View on Amazon

Thermal spa blankets are insulated floating sheets that sit directly on the water’s surface. Think of them as heavy-duty bubble wrap.

Specially designed to retain heat (particularly during the winter months), laying a thermal spa blanket underneath your hot tub cover provides further protection, allowing less heat to evaporate from the water’s surface.

While thermal spa blankets come in a variety of sizes, you must cut them to the precise shape of your spa for maximum efficiency.

If you want even more insulation than your regular cover provides, then a thermal spa blanket can be the solution. We like this Spa Depot available on Amazon.

4. Set up a pop-up canopy tent around the tub

A canopy tent covering your hot tub has many benefits. For example, it gives you extra protection from weather damage and offers privacy from neighbors if you have a garden overlooking the house.

Much like leaving your hot tub cover open, surrounding it with a canopy will allow less heat to escape from the area around your hot tub as it heats.

Search Amazon for canopy tents with sites like this one from Eurmax. When you’re done heating the water, you can either remove the canopy or leave it open for extra privacy.

As you might expect, depending on the general weather and climate in the area you live in, windy and snowy conditions will also negatively impact how long it takes for your hot tub to heat up.

By covering your hot tub with a canopy, you can help protect it from the elements, which allows it to heat up as quickly as possible.

5. Wait for a warm day

If your hot tub is outdoors, you can set it up on a warmer day, or drain and refill it to bring it up to temperature faster.

Simply put, if the air temperature is higher outside (or if you live in a warmer climate) it will directly affect how hard your hot tub has to work to heat – and therefore how long it takes to heat up.

Try to have it filled by early morning so you can make the most of the sun’s natural warmth during the hottest hours of the day.

6. Fill up with warm water

If you have access to an outdoor hot water supply, or if you are able to run a hose line from your house to your hot tub, then filling your tub with warm water rather than cold water will save you a lot of time during the heating process.

Rather than having your hot tub heat the water from cold, it just needs to add a little extra heat to already warm water. It has to work a lot less hard – and of course it gets to the desired temperature much faster.

7. Use a portable heater

Gesail UL Listed 1500W Immersion Heater View on Amazon

The last trick we have for you is to get a little help from an auxiliary heater. Immersion heaters are small electrical devices that you plug in and place in water. When used in conjunction with your hot tub’s regular heater, they can help speed up the heating process significantly.

Note that you should look for a heater of at least 1500W to get the best effect. We like the Gesail UL listed bucket water heater. This immersion heater can heat 5 gallons of water every few minutes.

Purchasing multiple immersion heaters to use at the same time further reduces the time it takes to heat up your hot tub.

And that completes our seven hacks on how to heat up your hot tub faster. Whatever tips you try (you could even combine some of them), hopefully you’ll be relaxing in your freshly filled hot tub before you know it.

Hot tub filters do an important job: they capture hair, swimsuit fibers, dirt or other debris that gets into your spa and prevent it from getting into the equipment where it can cause damage.

Your hot tub likely has several options for how often to run the filter cycle. But how do you know which one to choose? 4 hours? 12 hours? Constant?

Most private spa owners don’t need to run their hot tub pumps all the time. Unless the spa is used multiple times a day, a 2-8 hour filtration cycle twice a day should be sufficient to keep most hot tubs sanitized.

Let’s take a closer look at filter cycles and find out how to set the right schedule for your spa.

What are Hot Tub Filtration Cycles?

Filter cycles are periods when the spa’s pumps run automatically, circulating water and chemicals through the filtration system and plumbing – whether the spa is in use or not.

A hot tub full of stagnant water is the perfect breeding ground for bacteria.

For this reason, it is important to regularly circulate the water in the hot tub. Filter out contaminants before they have a chance to make your water unsanitary.

How often should you run your pump?

As a general rule, you should aim for the shortest filter cycle required to maintain clean water in your spa. What this is will depend on your spa, usage and local water quality and will require some experimentation to find out.

Here are some starter guidelines based on usage:

A few, occasional use: 2 hour cycle, twice a day

2 hour cycle, twice daily Small family or couples with regular guests: 3 or 4 hour cycle, twice daily

3 or 4 hour cycle, twice a day. Large family, frequent use, especially by children: 6 or 8 hour cycle, twice a day

Many manufacturers recommend 8 or 12 hour cycles, but most spa owners I know find this unnecessary. Personally, my hot tub (used by two people) is fine with 2 hour cycles running twice a day.

Choose a filter cycle based on the usage guidelines above. If the water stays clean for a few weeks, reduce the filter cycle time by one hour. Repeat this process until you notice cloudy water or your sanitizer levels are difficult to maintain.

When you may need to keep your pump running all the time

There are two situations where you might want to keep a hot tub pump running all the time.

Very heavy use

The first is when you have incredibly heavy consumption, to the point where none of the shorter cycles are able to keep the water clean.

I don’t know of a case where this was necessary but I imagine it could be possible if the hot tub is used multiple times a day, dirt gets in regularly and other contaminants such as drinks are spilled into the water.

You have a 24/7 circulation pump

Hot tubs can have different types of pumps:

Most hot tubs only use a standard jet pump to circulate the water through the heater and filter. This pump is used to operate the jets both when the tub is in use and during low speed filter cycles.

to circulate the water through the heater and filter. This pump is used to operate the jets both when the tub is in use and during low speed filter cycles. A circulation pump is a smaller pump that, unlike jet pumps, is designed for continuous operation. The idea is that they are more energy efficient, filter 24/7 and are quieter in operation.

There is some debate as to whether circulating pumps are actually as beneficial as some manufacturers claim, but if your spa has one, know that you want that pump to run all the time.

When is the best time to run hot tub filtration cycles?

By default, most hot tubs start their filtration cycle when you first turn the spa on and run on a schedule every 12 hours thereafter.

Filter after use

In order to get the maximum benefit from filtration, it makes sense to run a cycle immediately after normal use of the tub. This allows any impurities that have gotten in to be removed and not left in the water for too long where they could attract bacteria.

So if you are an evening spa user and typically want to soak between 7pm and 9pm, you can set your filter cycles to run at 9pm and 9am.

Aim for off-peak hours

Many spa owners also schedule their cycles off-peak, when energy is at its most favorable. Peak times are generally 6:00 a.m. to 10:00 a.m. and 5:00 p.m. to 9:00 p.m.

For example, a 4-hour cycle set at 11:00 am and 11:00 pm would avoid those hours (which could save on energy costs).

What happens if you don’t run your filter enough?

The telltale signs that you’re not filtering your spa water adequately are:

You notice the water becoming milky or cloudy

Your spa is developing a “pond” or algae-like odor

Sanitizer levels appear to be falling rapidly and are difficult to maintain at recommended levels

Foam or biofilm (a creamy/green substance) forms on the surface or around the waterline of your spa

All of these are signs of poor hygiene. If you see any of these, shock your tub and increase the filter cycle time. In severe cases, you may need to drain, clean, and fill the tub with fresh water.

What happens if you run your filter too often?

If your filter cycles are too long, you will have a clean hot tub. However, you also waste energy, put unnecessary strain on your pump, and your filters may need to be changed more often.

Over time, these things will all cost you more than if you had experimented a little to find the most efficient filtration cycle for your particular hot tub and usage.

Should you leave your hot tub on all the time?

Regardless of filter cycles, you should definitely leave your spa plugged in and turned on at all times.

Hot tubs are designed to be kept warm: it is actually more energy efficient to maintain the heat of a hot tub than to heat the cold water for each use.

Additionally, many of the chemicals used to maintain clean water require heat to function properly and maintain your water balance.

Should you ever run your hot tub without a filter?

You should never remove a spa filter for more than a few minutes at a time.

It’s fine (and recommended) to take the filter out to rinse every few weeks, but don’t leave it out longer than it takes to flush debris away with your garden hose.

And ideally, you shouldn’t run the spa pump while the filter is off, as this could suck contaminants into the equipment.

Common problems with the hot tub high limit switch

If you are having problems with your hot tub heater, it may be related to the high limit switch (aka high limit thermometer). Certain conditions can cause the breaker to trip more often than it should.

Often times you can troubleshoot the top limit switch and fix it yourself. However, since this is a situation where electricity is involved in close proximity to water, never attempt repairs unless you have a very good understanding of your spa and its electrical system.

If you experience any of the following issues repeatedly and your fixes are temporary at best, contact a professional for assistance. The longer you allow the problems to persist, the greater the potential for damage to your spa and its components.

What is the High Limit Switch?

The high limit switch is a safety feature that protects hot tubs from overheating. When it detects the spa water has reached 110 or 120 degrees, the switch will trip and your heater (and often the pump) will turn off.

Your high limit switch will measure the water temperature either through a capillary tube attached to a bulb or through a mounted sensor. When the switch detects unsafe temperatures, it opens to break the circuit and prevent the heater from literally melting.

Once the hot tub water temperature has dropped, the high limit switch must be manually reset.

The upper limit switch trips when:

The water in the hot tub is too hot and may harm bathers or the spa.

Something will trip the switch even if the water isn’t too hot.

Next, we discuss some of the most common reasons for the top limit switch to trip.

What causes the top limit switch to trip?

The first thing to consider is the water in your hot tub. What could cause it to reach temperatures of 120 degrees? Generally, new tubs don’t let you set the programmed temperature that high, so something else is likely happening.

If the air outside the tub is hot enough, it can be difficult to cool the spa water. Try adding some cool water (per fill and treatment instructions) or slide spa cover to vent hot air.

Adding very hot or boiling water is not recommended. Even if you want to increase the temperature faster, never fill the spa with water that differs from the manufacturer’s filling instructions.

Unless the water really reaches dangerous temperatures, something else is wrong and causing the high limit switch to trip. Here are some of the most common causes:

The high limit switch needs to be reset or replaced

Occasionally the high limit switch will trip as you fill your spa. Or it needs to be reset from time to time for no known or serious reason. Simply reset by pressing the big red button on your spa pack.

The upper limit switch can be housed in a protective tube. If the water temperature in the protection tube matches the water temperature in the rest of the spa, the switch is defective and needs to be replaced.

thermostat problems

The thermostat may be overcalibrated or simply defective. If calibration is the issue, you may be able to recalibrate by turning the screw on the back of the thermostat counterclockwise 1/4 inch.

It is also possible that the thermostat probe is not fully seated in the thermowell and is not reading the water temperature correctly.

If all else fails, it may be time to replace the thermostat.

calcium build-up

If the water temperature inside the high limit switch protection tube is higher than the water temperature in the rest of the spa, you may have scale buildup on the protection tube. The resulting low water flow can impair the function of the upper limit switch.

Make sure your filter is clean and free of clogs, and make sure disc and gate valves are open.

Air trapped in the system

If air remains in the plumbing system after the spa has been filled, the high limit switch could trip. If the problem occurs with every drain and refill, this is the likely cause. This problem will likely resolve itself once the lines are emptied of air.

If you are hesitant to work with the high limit switch yourself, do not hesitate to ask a professional or your local Aqua Living dealer for help and to protect yourself and others in the spa.

The jets in a hot tub are arguably one of the most important features we enjoy in our hot tubs. Unfortunately, sometimes the whirlpool jets won’t turn on, while sometimes the whirlpool jets won’t turn off.

Here’s why this happens:

Typically, if a spa’s jets are running 24/7, it’s likely a defective pump or circuit board in the control package. However, the pump will turn on automatically during the daytime during filter or heating cycles. And the running pump looks similar to the jets on, just not as powerful.

The jets in a whirlpool should not always be running.

Let’s take a look at when it’s normal for your spa jets to run, when your spa jets should be turned off, and the role your spa jets play in keeping the tub warm and comfortable to use.

I’ll also talk about what to do when your hot tub jets stop working or won’t shut off, other related common problems, and the #1 possible cause.

What type of spa jets do you have? There’s pulsing, steady, swirling and more pic.twitter.com/Y9gz6aXrAm – Unlimited Spa (@UnlimitedSpaSVC) December 8, 2021

Should spa jets always be on?

In general, the jets in a hot tub should not always be on. However, the circulation pump turns on automatically during filter cycles, creating an effect similar to jets. Filter cycles for most hot tubs are 2-8 hours twice daily.

And this helps keep the water in the hot tub clean.

The jets in your hot tub are the small holes you see on the inside of the tub. The spa jets push out warm water to improve the flow of water in the spa. Your hot tub’s jets are positioned where you want them to sit, and that’s no coincidence.

The jets provide a massage for you when you sit on them.

A hot tub without jets is basically just a big, expensive bathtub and not worth the expense and effort it takes to maintain it.

Your spa jets turn on during filter cycles because the water in your spa needs to circulate and move well and quickly during filter cycles. Your hot tub’s jets push the water out fairly hard and quickly, which aids in the hot tub’s filtration.

It is perfectly normal for the spa jets to turn on automatically when the pump turns on with the filter or heat cycles and run for a few hours.

Your nozzles have two settings – the hard setting and the soft setting. The hard setting should only be on when you’re in the tub, and this provides the massage and relief when you’re in there.

The soft jets are used to improve circulation during filter cycles and to reheat the spa when the temperature drops by forcing warm water into areas of cold water, increasing the overall temperature.

My Dad: I am draining the hot tub and the jets will probably fire a ton of water right where you are so be careful my dad moments later: pic.twitter.com/hccn5SvmpJ – Nicole is not a vampire or a vampire Nor Squid 🦇🦑 (@deaddropfred) September 26, 2021

Do the spa jets turn off automatically?

Spa jets turn off automatically. Hot tubs have a built in feature that will automatically turn off the hot tub jets to ensure you are not wasting electricity and to reduce wear and tear on the tubing and overall hot tub system.

As I mentioned earlier, on most hot tubs there is a high power jet setting and a low power jet setting.

The high-power setting should turn off automatically after just 15 minutes. You really shouldn’t sit in your whirlpool for more than 15 minutes. Eventually, it dries out your skin. The high-power jets also use more power, so they shut off faster.

The low-power jet setting can stay on for a few minutes to a few hours, depending on why it’s on. If the hot tub is just heating up again, it won’t be on for too long – possibly less than an hour.

If the jets are on because a filter cycle is taking place, they may stay on for a few hours, but will eventually turn off automatically.

BB asked Jedson to check the hot tub jets and he found himself in the hot tub with some balls! Have Not Room Reveal Coming? #bbcan9 pic.twitter.com/y7Vyoi5Hhk — BigBrotherJunkie👁 #BBAU (@89razorskate20) March 7, 2021

Why are my spa jets turning on by themselves?

Your spa’s jets turn on automatically during filter cycles and when the spa’s temperature falls below a certain set point.

Your hot tub’s filter cycles run fairly frequently and are designed to keep the water in your hot tub clean.

As an added benefit, the filter cycles keep the water in your hot tub circulating, which keeps things clean, prevents dirt from building up in the hot tub, and prevents air locks in the plumbing.

The jets are used during filter cycles as they help push water around the spa.

Hot tubs contain a lot of water, and it can be very expensive to constantly heat the water every time you want to use the tub. Because of this, most hot tubs run 24/7 and have settings to ensure the water temperature does not drop below a certain level.

The point at which the spa turns on the jets to reheat the tub is sometimes referred to as the set point. It’s cheaper to keep the hot tub warm than constantly heating it up.

The jets are used to force cold, hot water around the spa and mix warm and cold water, allowing the overall spa water temperature to be increased in the fastest, most energy efficient manner.

Protection from the whirlpool jets. pic.twitter.com/fWnvAUKq7b – Mike Morgan (@Pitt_anchor) January 27, 2020

Do the hot tub jets run when heating?

Hot tub jets don’t run when heating, but the pump that pulls the water through the plumbing may look similar. But if you’re heating a hot tub after filling the water, manually starting the jets can help increase the speed at which the hot tub heats up.

However, not all spas are able to keep the jets on while the spa is heating up.

Some hot tubs (and all inflatable ones) are 110 volts – and these tubs typically don’t have jets when they’re heating up. On the other hand, 220 volt hot tubs have the jets turn on when the water is heated.

Your spa’s pump circulates water in the tub, drawing it through the heating element and allowing the water to reach the set temperature.

For safety reasons, you should never turn on your spa jets unless the spa is full.

The last thing you want is to have hot water splashed on your face because you didn’t fill the tub. Some hot tubs have a setting that ensures the hot tub will not turn on its jets until it is full.

However, stay away from the jet buttons on your hot tub’s control panel until it is full.

If you are interested in learning more about controlling a hot tub, check out this recent article on my website. I’m talking about the settings and buttons you need to know to fully enjoy your hot tub.

Just click this link to read it on my website.

Are the spa jets running when the filter cycles are on?

Typically, the pump runs during filter cycles, drawing water through the heating and plumbing lines. This action can appear as if the jets are on in the low setting.

Filtration cycles average 2-8 hours twice a day.

During this time, your spa’s underperforming jets are likely to turn on. Your hot tub does this to improve water circulation in the tub and facilitate filtration.

If your jets keep turning on automatically, don’t worry, this is perfectly normal and your hot tub is basically taking care of itself, so you don’t have to worry about it. So relax!

My view, yes, whirlpool jets. Work out those torn muscles pic.twitter.com/T6aChKjKTc – #1nSanity Incognito OOC (@1nSanityOOC) September 7, 2020

Why won’t my spa jets turn off?

Sometimes your spa jets won’t turn off because the spa is going through one of its filtration cycles. With most spas, it is often not possible to turn off the jets during a filter cycle because the jets assist in the process.

Also, with 220 volt spas, you typically cannot turn off the jets while the spa is heating because the jets are used to mix the hot and cold water, which can increase the overall temperature of the spa water.

If you want to turn off your hot tub jets, the only real option is to change the filter cycles. Some hot tubs have a feature that allows you to set filter cycles, changing how long they last and how often they occur.

For example, your hot tub may default to two 8-filter cycles per day.

You may be able to reprogram the spa and switch to two 2-hour filter cycles per day. Not all hot tubs can do this, however, and you will need to check your owner’s manual or contact your hot tub manufacturer for instructions on how to do this.

The hot tub should have a button on the top that you can use to turn the jets on and off.

Try pressing the jet button. You may need to press the button once, double tap it, or press and hold it. You can experiment with the buttons yourself, but it’s best to read your spa’s owner’s manual.

If the jets are on a really light and low setting all the time, don’t worry, this is perfectly normal and there is probably nothing wrong with the hot tub. Sometimes you can never turn off the jets during filter cycles or while heating up. However, you can do this when the heater has finished filtering.

Remember I talked earlier about hot tubs having a set point – that’s the temperature at which the jets will turn back on to heat the hot tub again. On some hot tub models, you can set this set point lower than normal so the jets do not come on frequently.

However, this may not be the case with older hot tubs.

However, if you get an error code on the top panel or something is causing interrupt trips, you have a problem. It could be the circuit board in your ECU. In that case, it’s probably cheaper to just replace it than hiring a repair person.

However, one of the most common reasons is a problem with the pump, which we will address next.

Could a malfunctioning hot tub pump be causing the jets to not turn off?

Failure of the pump can result in the jets continuing to run even when the spa water is above setpoint and the spa is not performing one of its regular filtration cycles.

Your hot tub’s pump is used to power the jets and draw water through the heater.

Your hot tub pump is connected to some electrical components that essentially send information to the pump and tell it to run when the jets are needed.

If the spa has moisture around the pump electrical connections, it can cause corrosion around these electrical connections. As a result, power is supplied to the pump, but it does not know when to run or shut down.

It could also cause the GFCI to trip.

It’s a good idea to check the pump for corrosion around the electrical connections and if you notice any, get a professional to look at the pump. They may be able to clean it up, or you may need to replace some things.

But how often does the pump run?

If you want to learn more about hot tub pumps, whether it’s normal for them to run all the time, and what to do when your pump runs when it shouldn’t, check out this recent article on my website.

Just click this link to read it here.

Conclusion

From this article we learned that spa jets will turn on automatically during filter cycles and heating, and this is normal.

Your hot tub’s jets shouldn’t run 24/7, but they could run up to 16 hours a day on their light setting (assuming you have two 8-hour filtration cycles a day).

The jets should automatically shut off once the filter cycle is complete or once the spa temperature has reached its set point.

If corrosion has developed around your hot tub pump, it may mean that the electrical connections are not working. As a result, the spa cannot transmit information to the pump.

This information is crucial to telling it when to run and when to turn off.

While this won’t keep them running all day, you should also be aware that switching your hot tub to economy mode or sleep mode from standard or automatic mode will affect how often the jets and pump turn on.

When you are considering getting your own hot tub for the first time, you understandably have many questions about how hot tubs work and what you, as the owner, need to do to keep your hot tub running.

If you have used a hot tub regularly, or know someone who is fortunate enough to own one, you are familiar with some aspects of running a hot tub, but if not, you may have many questions that you have never considered.

A question we are sometimes asked when energy costs increase significantly is, “Should I keep my hot tub on all the time?”

The answer to that is…yes! Hot tubs are designed to stay on all the time, and that’s how they work best. Of course, they need to be drained regularly, but for the most part they stay on 24/7.

Why do hot tubs stay on all the time?

Heating a large volume of water takes time (see how long it takes to heat a hot tub?) and energy. It’s far more economical to maintain your tub’s temperature than heating it from scratch every time.

Having to heat your hot tub from the cold every time you wanted to use it would have a dramatic impact on your hot tub’s running costs. You would also spend a lot of time sitting around waiting for it to get hot!

The good news about running a hot tub

The good news is that hot tubs are designed to be left on, so they have many features to help them maintain their temperature, thereby reducing running costs. Here you can see a big difference between the performance of a quality hot tub and a cheaper hot tub such as B. some of the inflatable models, which often lack insulation. Tubs that are cheap to buy initially often have much higher running costs in the long run because they can be inefficient.

Quality hot tubs have insulating sidewalls and covers to keep as much heat in the water as possible. They also have more effective heating elements, reducing the amount of time and energy required to add heat when needed.

When should you turn off your hot tub?

There are times when you need to turn off your hot tub. Some of these are easy to predict and others depend on how often you will be using your tub at different times of the year. As previously mentioned, hot tubs need to be drained regularly – we recommend every three months for private hot tubs and usually more frequently for those in vacation rentals etc.

If you’re certain that you won’t be using your tub during certain times of the year, it may make sense to drain and turn it off. Many of our customers love using their tub in the winter and we encourage you to try your tub out during the colder months before deciding to turn it off.

If you decide you don’t want to use your tub in the winter, it can be emptied and turned off. We can help with this and prepare it for use in the spring. We recommend professional drainage services by our team of engineers as draining a hot tub for the winter comes with associated risks to pumps and plumbing.

If you’re going to be away from home for some time – you might be lucky enough to have a house to spend the summer in – then consider turning off your hot tub when you leave. Much like those who choose not to use their tub in the winter, you need to keep your tub empty and protected from the elements.

How can you further reduce the cost of running your hot tub?

With energy prices rising and the cost of living rising, there are other steps you can take to reduce the cost of running your hot tub without having to shut it down.

Lowering your thermostat by a degree or two can significantly improve your energy use without you even noticing a temperature difference. In addition to the aforementioned insulation, it’s also important to cover your hot tub when not in use as this will help retain heat (all Just Hot Tubs hot tubs come with a cover as standard).

Finally, regularly cleaning and replacing your dirty hot tub filters will help keep your pump operating as efficiently as possible.

If you have any questions about purchasing or operating a hot tub, contact our friendly team today and they will be happy to answer your questions directly.

Or to see some of our hot tubs in action for yourself, why not visit one of our showrooms?

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What is the correct hot tub temperature when not in use? As a rule of thumb, the temperature should be at least 5 degrees lower than when in use. It is necessary to keep it at lower temperatures when not in use so that the energy consumption does not become too high. As with all other household appliances that use electricity, it is necessary to keep the temperature slightly lower to save energy. Others argue that it should be turned off entirely. The reason you shouldn’t turn off the hot tub completely is that it will end up using more energy trying to reheat the water to a certain temperature. This article goes into more detail about what temperature you should keep your hot tub at when not in use.

Why you should keep your tub at low temperatures

Save time heating up your hot tub

Lowering the temperature by about 5 degrees makes it easier to reheat the water to the temperature you want when you want to use it again, rather than starting over. You avoid instances where you have to wait too long before the temperature can rise.

Avoid wasting energy

It will also be more cost effective as it will not take as much energy to raise the hot tub temperature by another 5 degrees as opposed to how much energy is used starting with room temperature water. Remember that the longer it takes for your hot tub to heat up, the more energy it will use.

Protection of the bathtub system

Let’s say you turned your hot tub off completely over the winter. You risk bursting the pipes and even developing further complications because the water in the tub has frozen. In order to keep the water in liquid form and to avoid instances where the pipes can rupture from freezing, you need to keep the water at least 5 degrees below the normal operating temperature. Not only will this help you maintain your hot tub properly, but you can also avoid instances where you can cause major damage to your hot tub.

So what is the ideal hot tub temperature when not in use? A good rule of thumb is to keep your hot tub temperature 5 degrees below normal at all times. This saves you time heating up your hot tub, avoids using too much energy and also protects your hot tub’s internal system.

Ahhhhhh… You can’t beat the feeling of relaxation at the end of the day in your very own spa. Those cozy baths can seem a lot more appealing in winter, especially on those days when you just can’t warm up. Keep yourself, your family and friends safe and warm by keeping your spa at the right temperature during the colder months.

How hot is too hot?

There are many safety warnings related to the use of hot tubs, particularly due to water temperature. Because when you’re enjoying a relaxing soak in your hot tub, it’s difficult to take your own body temperature as your head and shoulders are exposed to the air temperature and your body is immersed in the hot water. Additionally, because you’re submerged, you can’t sweat to regulate your body heat like you normally would when you overheat. For this reason, it is important to limit your time at the spa, in addition to keeping the water temperature comfortable.

The water temperature in your spa should never exceed 104°F, a limit recommended by the Centers for Disease Control (CDC) and the Consumer Product Safety Commission (CPSC). Many newer hot tubs have pre-installed safety settings that prevent the water from exceeding this temperature.

Ideal spa temperature for winter

As for the temperature of your hot tub in the winter… it’s more a matter of taste. Many spa owners prefer to keep their spa temperature between 102°F and 104°F, although even 100°F is safe and comfortable for a healthy adult. If you’re curious, try soaking at different temperatures to see what you prefer.

Remember that in winter you definitely want a water temperature that is warmer than your body temperature (typically 30°C). In addition, the cooler the temperature is set, the smaller the gap between the water temperature and the freezing temperature. During prolonged power outages, this can mean the difference between freezing your water and damaging your hot tub or not.

Of course, there are many reasons why you should pay special attention to water temperature. Your doctor may recommend specific temperatures or time limits depending on your health. The temperature should be lowered for the safety of children in the hot tub, as well as for pregnant women to enjoy a safe and relaxing soak in the spa.

What temperature should the spa be when not in use?

Many people want to conserve energy around the home in as many ways as possible, and if that’s a priority for you, your spa need be no exception. Rather than lowering the temperature when you’re not using the hot tub and then turning it back up when you’re ready to take a dip, it’s best to find your ideal temperature and set the water there consistently. In addition to saving energy, since you don’t have to turn up the heat every time you use the spa, you also don’t have to wait for the water to heat up to the desired temperature each time, which can take a few hours.

For the occasional use of the whirlpool

If you use your hot tub for less than two total hours per week, you can turn the temperature down – no more than 5°F below your preferred soaking temperature – when it’s not in use. Setting the water temperature lower will cause your heater to work harder and longer than necessary, increasing your running costs. Set the desired temperature a few hours before you want to enjoy a bath.

Spa-free winter?

Even if you don’t use your spa often during the winter, you should still keep the water at a warm temperature to avoid freezing and damage. If you prefer to close your hot tub for the winter, make an appointment with Zagers’ spa professionals to ensure everything has been done right – it’s the best way to ensure your spa is ready when you want to enjoy it again .

Hot Tub Winter Tips

Regardless of the time of year, remember basic hot tub safety: limit your soak to no more than 30 minutes and make sure to stay well hydrated.

In the dead of winter, it is normal for the water temperature to drop about one degree while the hot tub is in use for an extended period of time. Sometimes the heater can’t keep up with the heat loss. If you want to reduce overall heat loss, you should make some changes to make your spa more energy efficient.

We highly recommend using a thermal spa blanket to keep the heat in the tub. Finally, make sure your hot tub cover is in good condition so the heat doesn’t escape. A damaged hot tub cover can waste a lot of energy as the heater runs constantly to maintain the set temperature.

Do you have further questions about using the whirlpool in winter? Comment below!

The cost of running a hot tub is one of the most important questions to consider before purchasing a hot tub. After the initial expenses of buying a new or used hot tub, you need to consider the monthly running costs. All hot tubs are different, so this is just a guide. We will also recommend ways you can reduce the cost of running your hot tub.

360 Hot Tubs offer repair and maintenance services throughout Southampton, Portsmouth, Guildford, Bournemouth, Hampshire and Dorset.

How much does it cost to run a hot tub?

A well insulated, quality hot tub should cost an average of £1.50 per day. A poorly insulated hot tub can cost upwards of £100 a month! If you’re paying too much to run your spa, take a look at our recommendations to cut costs.

Some things you can do to reduce hot tub running costs

Maintaining a hot tub at around 40°C every day, especially in the winter, will add up to your energy bills. You can try to reduce this by doing the following:

Replace the cover if old, cracked, or damaged

Reduce the temperature of your hot tub

Add a thermal blanket in addition to the cover

Block the wind with a windbreak or similar barrier

Use long-lasting LED lights to use less energy

Use a pipe cleaner every time you drain and refill to make it more efficient

Check your electricity tariff to get the best deal

Make sure there is proper insulation behind the hot tub panels to keep the heat inside

Filling with hot water is cheaper than filling with cold and heat in the whirlpool. To do this, you will need access to an outdoor hot water faucet or an adapter for an indoor sink.

If your hot tub has an economy mode, setting filter cycle times and using this mode can help reduce costs

Close the air vents

Clean the filters

A hot tub WILL increase your energy bills

Of course, as hot tub pumps, heaters, lights, etc. are constantly powered by electricity, this is reflected in your energy bills.

New hot tub owners or those who have just changed the water often have a common question: how long does it take to heat up a hot tub?

Here’s what I found when I owned 4 of them:

On average, most hot tubs take about 4 hours to reach 100 degrees. However, hot tubs can take up to 8 hours to reach the desired temperature. Factors include the capacity of the tub, the ambient air temperature, and the temperature of the water from the hose.

But there’s a lot more to know about heating a hot tub, including how to speed it up and the one thing you should never do that could damage your hot tub.

So let’s keep going!

The rest of this article discusses some important issues related to heating your hot tub:

How long does it take for a hot tub to heat up?

Does a spa heat faster with the jets on?

How to heat up a hot tub faster?

Can you fill a hot tub with hot water?

Of course, in many cases you will ask yourself this after you have drained your hot tub.

Aside from heating up the new water, many people wonder how long it takes to refill a hot tub!

I also cover this in a recent article. I’ll explain not only how long it takes, but also ways to speed this up. Then I even go over 1 cool trick you can use to empty a tub in just 15 minutes!

Just click the link to see it on my website.

Are you ready to spend less time maintaining and more time enjoying your hot tub?

Let’s be honest. Balancing the water, cleaning out filters, dealing with rashes, and trying to figure out what chemicals to buy and add can make you feel more like a chemist than someone who’s coming to the end of a long hard day just want to relax!

This is exactly why the spa manual and video course are so valuable!

This is from Matt at Swim University and he designed it for people who want to save money, time and frustration. His tips on chemicals can save you $100/year just by making sure you only buy what you need.

So if you are ready to stop being confused or frustrated with your hot tub and want to spend more time in it, check out the hot tub manual and video course.

Just click this link to find out more on their website.

Soooo since #Bubbles (our new hot tub) won’t be delivered until early August…I turned the old broken hot tub into a “pool” for us to relax in today! 🤣… It holds water!!! … It just doesn’t heat up. And since it’s 100 degrees today… I’m fine without heated water! 🤗 pic.twitter.com/IDeoULoKHf – Matt Stout-McKnight (@MattStout07) July 4, 2018

How long does it take for a hot tub to heat up?

A hot tub takes an average of 4 hours to heat up after being filled with a garden hose. But hose water can range from 60° to 75°F, and the average hot tub heats water at 5 degrees per hour. So starting with very cold water takes longer.

A soak in a nice, warm jacuzzi is second to none after a long day at work. However, you need to make sure the water is hot before jumping in.

There are 3 cases when you need to heat a hot tub at home:

If you’ve freshly filled the tub after purchasing or emptying the hot tub If you lower the temperature between uses, you’ll need to reheat it before getting in If you turn it off and winterize it during the cold months

The current temperature of the spa water affects how long it takes to heat up.

On a warm, sunny day, you may find that the water is about 80 degrees hot without internal heating. That means you only have to warm it up for a couple of hours – maybe three at most.

Colder water at 60 to 70 degrees might take a little longer. Don’t worry though, as the process only adds about an hour.

Think summer is too hot to use your hot tub? Think again!

While the water in your tub can easily reach unsafe levels in particularly hot places during the summer, in a recent article I cover a few simple but cool tricks for lowering the temperature in your hot tub.

That way you can even use it in August in Texas (where I live)! Just click this link to read it on my website.

Allowing about 5 hours to heat up cold spa water is a good idea. If you have a lid, keep it closed for faster heating.

The size of the heater and the tub also have a major impact on the water temperature.

Think of boiling water on the stove; It takes longer to heat if you’re using a large 2-gallon pot than if you’re using a tiny 2-quart pot, right? The same principle applies here.

Large tubs require more time than small tubs.

Drained the hot tub last night. Topped up tonight. The water temperature after filling is 16 degrees. It has to heat up to 38 degrees and heat up to 2 degrees per hour, it takes 11 hours for someone to take a bath…. oh and I’m also laying some astroturf pic.twitter.com/AlqscPpWp2 – Keith Scott www.roevalleycottage.com (@keithscottfarm) June 7, 2018

Does a spa heat faster with the jets on?

A hot tub heats up much faster when the jets and water features are on. This helps circulate all of the water through the heater tube and eliminates cold pockets. However, do not turn on the jets until they are submerged.

Jets are a fantastic addition to any spa. They allow the user to relax completely and receive a gentle massage.

However, there is also a little-known additional purpose for these handy jets; They will help you heat up your hot tub faster.

When you turn on your spa jets, the water begins to circulate, moving and evenly distributing heat.

Without the use of jets, pockets of cold water tend to form, hanging in the pipes inside the hot tub. The circulation of the jets flushes the pockets and mixes the cold water with the heated water.

This process can cause the water to heat up by three to six degrees per hour!

The only precaution to remember is not to turn on the jets or heater until the tub is full.

Some owners think it’s a good idea to start heating as soon as the water hits the first jet, but that’s far from the truth. You cannot run water through the jets until they are all submerged as this could damage the entire system.

If your hot tub doesn’t have jets, you can try circulating it with your hands or a pool noodle. While it doesn’t work as well as a series of jets, it can still help move the water and heat the tub a little faster.

Remember that a lid will always heat your water faster than stirring by hand. Therefore, you should cover your tub whenever possible.

How can I heat my hot tub faster?

Here are proven methods to speed up the heating process of a recently filled hot tub:

Place a cover on the hot tub. Without a lid, exposure to the cold outside air will make it difficult for your tub to heat up. Any temperature lower than your desired water temperature counteracts the process. If you don’t have a lid, try a tarp! Use a floating thermal blanket. These are thin sheets of plastic that resemble bubble wrap and simply float on the surface of the water. Buy a more powerful heater. Most 220v hot tubs use a 4kW heater. However, many 110V plug and play units only use a 1kW heater. Upgrading to 4kW significantly speeds up heating. But 110v hot tubs may need to be upgraded to 220v to take advantage of this. Turn on all jets and water features in the spa. This improves circulation and heats your water more evenly. Some hot tubs have just a few jets, while others have built-in fountains on the floor and massage jets on each seat. Once there is enough water to cover them, turn everything on to heat up the hot tub as quickly as possible.

How well does 50 pounds of hot steel heat up a hot tub? You’ll find out in a moment https://t.co/9xqi7HRsdR pic.twitter.com/tHwjl6mhd3 – Fotis Karioris (@FotisKarioris) September 5, 2017

Another common question from spa owners is how hot SHOULD the water be?

At least we hear 104, but that sounds pretty hot! And for those of us with young children, is that too hot?

Thankfully, in a recent article, I removed all of the mystery from it.

I’m not just breaking down the maximum safe temperature. But I also list maximum safe soak times by temperature. That way, no matter how hot you like it, you know how long you can safely sit in it.

Just click this link to see it on my website.

Traveling around Wales for a few days. The farmhouse features a hot tub. Yay! However, it is a Dutchtub. You fill it with water and literally start a fire using logs to heat the water. Then wait 4 hours… hmmmm. A gin can make time go by faster… pic.twitter.com/Kb6VqmwgXQ – Mike Hamer (@mikehamer) December 29, 2018

Can you fill a hot tub with hot water?

As a general rule, do not use hot water to fill a hot tub. Water from a nearby water heater is way too hot and could damage the tub shell. And simply heating water on the stove and pouring it is far too labor intensive.

After a few hours of sitting around and waiting while the hot tub warms up, it might be tempting to pour hot water next time.

While using pre-heated water seems like a good plan, you should not do it as it can permanently damage your spa.

Never fill water higher than 104 degrees, which is the highest setting on most hot tubs.

Putting in boiling water or even water that is over 110 degrees can burn the liner of your hot tub.

Your hot tub is not designed for sweltering temperatures, which means the materials could start to melt or give way. Acrylic spas are usually the first to show signs of being way too hot.

If you want to add really hot water to the tub, you should first fill it halfway with regular water through the hose.

This will help distribute the hot water instead of leaving it concentrated on the surface of the tub. Even then, the heated water could pose a problem if it goes straight into the pump and filter.

Hot water that is higher than the hot tub temperature settings can also damage the pump, jets, filter, liner and materials.

It might speed up the warming process somewhat, but it’s not worth the risk involved.

Just follow the three recommended steps above to ensure a safe and fast heat-up time.

Don’t know how often to change the water in your hot tub?

You’re not alone! In a recent article, I broke down everything you need to know about how long you can run your water before changing it.

I also cover how to change it quickly and easily, and how to tell for sure if it’s not safe to soak.

Just click this link to view it on my website.

Final Thoughts

In this article we took a look at the world of hot tubs and how long they take to heat up.

We investigated why you might need to heat them. But we also looked for ways to speed this up. And we’ve covered the one thing you should never do when trying to speed up the heating as it could damage the tub.

Here are the key points to take away from this post:

It can take anywhere from three to eight hours to heat up a hot tub. The time required depends on the size of the tub and heater, the water and air temperature, and whether you are using a cover or jets.

The time required depends on the size of the tub and heater, the water and air temperature, and whether you are using a cover or jets. A hot tub heats up faster when the jets are on. The jets circulate the water and ensure that no cold pockets remain trapped in the pipes.

. The jets circulate the water and ensure that no cold pockets remain trapped in the pipes. You can heat a hot tub faster by turning on the jets, placing a cover over the tub, and using a more powerful heater. These are the easiest and most effective ways to increase the heating speed of your tub.

These are the easiest and most effective ways to increase the heating speed of your tub. It would be best if you didn’t fill a tub with hot water. While it might speed up the process a bit, hot water can permanently damage the tub.

Would you like a quote for a new hot tub?

Save time and get multiple offers on hot tubs from the most popular brands!

I have agreed with BuyerZone.com to provide free quotes from the best hot tub manufacturers – with no obligation to buy. Simply fill out BuyerZone’s inquiry form below.

Are you confused about hot tub chemicals?

Hot tub chemicals can definitely be confusing. It’s hard to know how much to add. Or which ones should you buy or are even necessary?

Luckily, in a recent article, I took ALL the confusion out of it.

I go into detail about what chemicals you need, but also those you don’t need and which are a waste of money. But I also look at which chemicals are best for sensitive skin and how to avoid a hot tub rash.

Just click the link to read that on my website.

Are you ready to spend less time maintaining and more time enjoying your hot tub?

Let’s be honest. Balancing the water, cleaning out filters, dealing with rashes, and trying to figure out what chemicals to buy and add can make you feel more like a chemist than someone who’s coming to the end of a long hard day just want to relax!

This is exactly why the spa manual and video course are so valuable!

This is from Matt at Swim University and he designed it for people who want to save money, time and frustration. His tips on chemicals can save you $100/year just by making sure you only buy what you need.

So if you are ready to stop being confused or frustrated with your hot tub and want to spend more time in it, check out the hot tub manual and video course.

Just click this link to find out more on their website.

The jets in a hot tub are arguably one of the most important features we enjoy in our hot tubs. Unfortunately, sometimes the whirlpool jets won’t turn on, while sometimes the whirlpool jets won’t turn off.

Here’s why this happens:

Typically, if a spa’s jets are running 24/7, it’s likely a defective pump or circuit board in the control package. However, the pump will turn on automatically during the daytime during filter or heating cycles. And the running pump looks similar to the jets on, just not as powerful.

The jets in a whirlpool should not always be running.

Let’s take a look at when it’s normal for your spa jets to run, when your spa jets should be turned off, and the role your spa jets play in keeping the tub warm and comfortable to use.

I’ll also talk about what to do when your hot tub jets stop working or won’t shut off, other related common problems, and the #1 possible cause.

What type of spa jets do you have? There’s pulsing, steady, swirling and more pic.twitter.com/Y9gz6aXrAm – Unlimited Spa (@UnlimitedSpaSVC) December 8, 2021

Should spa jets always be on?

In general, the jets in a hot tub should not always be on. However, the circulation pump turns on automatically during filter cycles, creating an effect similar to jets. Filter cycles for most hot tubs are 2-8 hours twice daily.

And this helps keep the water in the hot tub clean.

The jets in your hot tub are the small holes you see on the inside of the tub. The spa jets push out warm water to improve the flow of water in the spa. Your hot tub’s jets are positioned where you want them to sit, and that’s no coincidence.

The jets provide a massage for you when you sit on them.

A hot tub without jets is basically just a big, expensive bathtub and not worth the expense and effort it takes to maintain it.

Your spa jets turn on during filter cycles because the water in your spa needs to circulate and move well and quickly during filter cycles. Your hot tub’s jets push the water out fairly hard and quickly, which aids in the hot tub’s filtration.

It is perfectly normal for the spa jets to turn on automatically when the pump turns on with the filter or heat cycles and run for a few hours.

Your nozzles have two settings – the hard setting and the soft setting. The hard setting should only be on when you’re in the tub, and this provides the massage and relief when you’re in there.

The soft jets are used to improve circulation during filter cycles and to reheat the spa when the temperature drops by forcing warm water into areas of cold water, increasing the overall temperature.

My Dad: I am draining the hot tub and the jets will probably fire a ton of water right where you are so be careful my dad moments later: pic.twitter.com/hccn5SvmpJ – Nicole is not a vampire or a vampire Nor Squid 🦇🦑 (@deaddropfred) September 26, 2021

Do the spa jets turn off automatically?

Spa jets turn off automatically. Hot tubs have a built in feature that will automatically turn off the hot tub jets to ensure you are not wasting electricity and to reduce wear and tear on the tubing and overall hot tub system.

As I mentioned earlier, on most hot tubs there is a high power jet setting and a low power jet setting.

The high-power setting should turn off automatically after just 15 minutes. You really shouldn’t sit in your whirlpool for more than 15 minutes. Eventually, it dries out your skin. The high-power jets also use more power, so they shut off faster.

The low-power jet setting can stay on for a few minutes to a few hours, depending on why it’s on. If the hot tub is just heating up again, it won’t be on for too long – possibly less than an hour.

If the jets are on because a filter cycle is taking place, they may stay on for a few hours, but will eventually turn off automatically.

BB asked Jedson to check the hot tub jets and he found himself in the hot tub with some balls! Have Not Room Reveal Coming? #bbcan9 pic.twitter.com/y7Vyoi5Hhk — BigBrotherJunkie👁 #BBAU (@89razorskate20) March 7, 2021

Why are my spa jets turning on by themselves?

Your spa’s jets turn on automatically during filter cycles and when the spa’s temperature falls below a certain set point.

Your hot tub’s filter cycles run fairly frequently and are designed to keep the water in your hot tub clean.

As an added benefit, the filter cycles keep the water in your hot tub circulating, which keeps things clean, prevents dirt from building up in the hot tub, and prevents air locks in the plumbing.

The jets are used during filter cycles as they help push water around the spa.

Hot tubs contain a lot of water, and it can be very expensive to constantly heat the water every time you want to use the tub. Because of this, most hot tubs run 24/7 and have settings to ensure the water temperature does not drop below a certain level.

The point at which the spa turns on the jets to reheat the tub is sometimes referred to as the set point. It’s cheaper to keep the hot tub warm than constantly heating it up.

The jets are used to force cold, hot water around the spa and mix warm and cold water, allowing the overall spa water temperature to be increased in the fastest, most energy efficient manner.

Protection from the whirlpool jets. pic.twitter.com/fWnvAUKq7b – Mike Morgan (@Pitt_anchor) January 27, 2020

Do the hot tub jets run when heating?

Hot tub jets don’t run when heating, but the pump that pulls the water through the plumbing may look similar. But if you’re heating a hot tub after filling the water, manually starting the jets can help increase the speed at which the hot tub heats up.

However, not all spas are able to keep the jets on while the spa is heating up.

Some hot tubs (and all inflatable ones) are 110 volts – and these tubs typically don’t have jets when they’re heating up. On the other hand, 220 volt hot tubs have the jets turn on when the water is heated.

Your spa’s pump circulates water in the tub, drawing it through the heating element and allowing the water to reach the set temperature.

For safety reasons, you should never turn on your spa jets unless the spa is full.

The last thing you want is to have hot water splashed on your face because you didn’t fill the tub. Some hot tubs have a setting that ensures the hot tub will not turn on its jets until it is full.

However, stay away from the jet buttons on your hot tub’s control panel until it is full.

If you are interested in learning more about controlling a hot tub, check out this recent article on my website. I’m talking about the settings and buttons you need to know to fully enjoy your hot tub.

Just click this link to read it on my website.

Are the spa jets running when the filter cycles are on?

Typically, the pump runs during filter cycles, drawing water through the heating and plumbing lines. This action can appear as if the jets are on in the low setting.

Filtration cycles average 2-8 hours twice a day.

During this time, your spa’s underperforming jets are likely to turn on. Your hot tub does this to improve water circulation in the tub and facilitate filtration.

If your jets keep turning on automatically, don’t worry, this is perfectly normal and your hot tub is basically taking care of itself, so you don’t have to worry about it. So relax!

My view, yes, whirlpool jets. Work out those torn muscles pic.twitter.com/T6aChKjKTc – #1nSanity Incognito OOC (@1nSanityOOC) September 7, 2020

Why won’t my spa jets turn off?

Sometimes your spa jets won’t turn off because the spa is going through one of its filtration cycles. With most spas, it is often not possible to turn off the jets during a filter cycle because the jets assist in the process.

Also, with 220 volt spas, you typically cannot turn off the jets while the spa is heating because the jets are used to mix the hot and cold water, which can increase the overall temperature of the spa water.

If you want to turn off your hot tub jets, the only real option is to change the filter cycles. Some hot tubs have a feature that allows you to set filter cycles, changing how long they last and how often they occur.

For example, your hot tub may default to two 8-filter cycles per day.

You may be able to reprogram the spa and switch to two 2-hour filter cycles per day. Not all hot tubs can do this, however, and you will need to check your owner’s manual or contact your hot tub manufacturer for instructions on how to do this.

The hot tub should have a button on the top that you can use to turn the jets on and off.

Try pressing the jet button. You may need to press the button once, double tap it, or press and hold it. You can experiment with the buttons yourself, but it’s best to read your spa’s owner’s manual.

If the jets are on a really light and low setting all the time, don’t worry, this is perfectly normal and there is probably nothing wrong with the hot tub. Sometimes you can never turn off the jets during filter cycles or while heating up. However, you can do this when the heater has finished filtering.

Remember I talked earlier about hot tubs having a set point – that’s the temperature at which the jets will turn back on to heat the hot tub again. On some hot tub models, you can set this set point lower than normal so the jets do not come on frequently.

However, this may not be the case with older hot tubs.

However, if you get an error code on the top panel or something is causing interrupt trips, you have a problem. It could be the circuit board in your ECU. In that case, it’s probably cheaper to just replace it than hiring a repair person.

However, one of the most common reasons is a problem with the pump, which we will address next.

Could a malfunctioning hot tub pump be causing the jets to not turn off?

Failure of the pump can result in the jets continuing to run even when the spa water is above setpoint and the spa is not performing one of its regular filtration cycles.

Your hot tub’s pump is used to power the jets and draw water through the heater.

Your hot tub pump is connected to some electrical components that essentially send information to the pump and tell it to run when the jets are needed.

If the spa has moisture around the pump electrical connections, it can cause corrosion around these electrical connections. As a result, power is supplied to the pump, but it does not know when to run or shut down.

It could also cause the GFCI to trip.

It’s a good idea to check the pump for corrosion around the electrical connections and if you notice any, get a professional to look at the pump. They may be able to clean it up, or you may need to replace some things.

But how often does the pump run?

If you want to learn more about hot tub pumps, whether it’s normal for them to run all the time, and what to do when your pump runs when it shouldn’t, check out this recent article on my website.

Just click this link to read it here.

Conclusion

From this article we learned that spa jets will turn on automatically during filter cycles and heating, and this is normal.

Your hot tub’s jets shouldn’t run 24/7, but they could run up to 16 hours a day on their light setting (assuming you have two 8-hour filtration cycles a day).

The jets should automatically shut off once the filter cycle is complete or once the spa temperature has reached its set point.

If corrosion has developed around your hot tub pump, it may mean that the electrical connections are not working. As a result, the spa cannot transmit information to the pump.

This information is crucial to telling it when to run and when to turn off.

While this won’t keep them running all day, you should also be aware that switching your hot tub to economy mode or sleep mode from standard or automatic mode will affect how often the jets and pump turn on.

A common problem with older spas is pump failure. We’ll walk you through replacing the spa pump and restoring your hot tub for years to come. If your system is more than 2-3 years old, replace the entire pump, not just the motor or wet end. You will have fewer headaches in the long run.

Caution: Electrical repairs can be dangerous, especially near water. Repairs must be performed by a qualified electrician or spa technician. Regardless of who is doing the work, turn off all power to the spa before making any inspections or repairs. Electrical repairs can be dangerous, especially near water. Repairs must be performed by a qualified electrician or spa technician. Regardless of who is doing the work, turn off all power to the spa before making any inspections or repairs. Shut off power at the service panel and also disconnect power to the spa as a secondary precaution. Do not attempt electrical repairs unless you are qualified.

Anatomy of whirlpool pumps

Pumps consist of two main components: the wet end, which moves the water, and the electric motor, which drives the wet end.

Symptoms of spa pump failure

There are several signs of a hot tub pump failure:

Humming noise from motor not turning, frozen shaft, bearing or impeller, or defective start capacitor

Howling noise from worn bearings

Leaks under the pump due to pump seal failure.

You can replace these components yourself if you can find the right parts. But if your pump is older, replace the whole thing. If the other pump parts fail, you’ll have to replace each one at a higher overall cost. In the end, you save money – and time.

Replacement jet pumps for hot tubs

Remove the old pump

Disconnect power and read the safety warning!

Access to spa equipment

The best way to choose the right replacement pump is to remove the old pump first. You can inspect and measure for a correct match.

After disconnecting the power supply, remove the spa access panel.

Some hot tubs have two spool or disc valves installed on either side of the pump. In this case, close these valves before removing the pump. If there are no valves, drain the spa.

Disconnecting the old spa pump

Disconnect the bare copper jumper wire from the pump ground terminal.

Unscrew the two connections of the pump. Some residual water runs off.

Remove the mounting screws from the pump base bracket.

You can lift the pump out of the spa while the power cord is still connected to the control system.

cable detachment

Use the old power cord* for the replacement pump if it is still in good condition.

Loosen the cable clamp screws

Remove the access cover with internal terminal connections on the motor end of the pump

Disconnect the cable and note the cable color codes and connectors

Check that the wire ends are clean. Snip an inch or two if needed and strip the wires again

Most spa pumps are two speed units, with the low speed being used for filtration and heating cycles. Two-speed 240V pumps have 4 wires: red, black, white and green. Red is usually low speed and black is high speed. The white wire is common and the green is ground.

*Note: If you are also purchasing a new spa control system from us, you can discard the old pump cable. A new one comes with the new spa package.

Determine the pump voltage and power

While all 110-120V spas use 120V pumps, not all spas wired for 220-240V use 240V pumps. Some use 120V pumps. So consult your owner’s manual and look at the label on the old pump to determine the voltage. The label should also state the horsepower and amperage. See Pump Specifications for cross reference.

Some people want to increase spa jet action by upgrading to a larger pump. Usually this is not a problem. However, check the spa’s control system and power supply; to be sure it can handle the extra amperage.

As a guide, do not increase pump capacity by more than an order of magnitude. For example, it makes sense to upgrade a 1 HP pump to 1.5 HP or a 3 HP pump to 4 HP. Avoid jumping from 2hp to 5hp as such a large increase will cause problems. Excessive jet pressure, excess current draw and pump damage are just a few examples.

Determine the form factor: side or center discharge

The form factors of the two spa pumps refer to the outflow or outlet fitting on the wet end. Your old pump will come out either in the middle or on the side.

Orientation of the wet end

Wet parts of the pump can be rotated in 90° steps. Unscrew the four pump thru bolts from the back of the motor and back them out far enough to loosen them. Then rotate the wet end to the desired position, realign the screws and retighten.

In most cases, you’ll need to adjust the existing form factor to make the components fit together. If you can use either form, choose side-discharge, which is more efficient than a center-discharge pump of the same capacity. See pump selection table

24 hour circulation pumps

In addition to the main pump, some spas also use a small 24-hour circulation pump. Most spa circulation pumps have 3/4 inch barbed fittings for flexible hoses, making replacement very easy. See circulation pumps

motor frame size

The physical size of the spa pump motor is called the frame. Main spa pumps are either 48 frame (approximately 5.5″ diameter) or 56 frame (approximately 6.5″ diameter) sized. Check the old motor’s nameplate for the frame size.

When in doubt, you can easily determine the frame size of a motor by measuring the distance between the through bolts.

Bolt spacing on a 48 frame motor is less than 4 inches. The bolts on a 56 frame motor are more than 4 inches apart.

Note: Due to their lower cost and compact size, most spa pumps in service have a 48 frame. Larger ’56 engines are slightly more expensive and slightly more powerful. They tend to run a little cooler than 48-frame units, which can mean longer lifespans.

Determine the size of the pump installation

The size of the piping is very important, but many people make a mistake and end up ordering the wrong pump. Most spa pumps use either 1.5″ or 2″ pipe fittings, and a select few have a 2.5″ suction. These are pipe code sizes, not mating sizes.

With the pump connections removed, the measurement is easy. The easy way to get it right for most* brands of pumps is to measure the overall outside diameter (O.D.) of the pump threads:

The 1.5″ pump thread is approximately 2-3/8″ O.D.

The 2.0″ pump thread is approximately 3″ OD.

The 2.5″ pump thread (inlet) is approximately 3-5/8″ OD.

*Most pumps typically have a 2.0″ outlet thread that is approximately 3″ OD. Some pump brands (like Hayward, Jacuzzi, and Sta-Rite) use non-standard fittings with different dimensions. If in doubt, please contact our technical help for parts for assistance.

Installing the new pump

Installing your replacement pump is essentially the reverse of the removal process described above. Double check that power is removed from the spa before proceeding.

Connecting the pump power cable

Most spa pumps are two speed units, with the low speed being used for filtration and heating cycles. As discussed below, two-speed pumps can be easily configured for single-speed use.

Remove a wire connector from the end of the new pump motor and install a wire connector.

Remove the cable access cover from the end of the new pump motor.

Connect the pump power cable wires and ground according to the pump wiring diagram.

Replace access cover.

Tighten cable clamp.

Make sure the cable ends are clean to ensure a good connection to your new pump. Our replacement pumps have a sticker diagram showing the wiring schematic.

Two speed pump configuration

A two-speed pump requires 3 line connections plus a ground wire. Typical color coding is as follows:

White: common

Black: high speed

Red: low speed (left blank for 1 speed)

Green (or blank): Ground

Refer to your pump’s wiring diagram as some equipment systems use different color coding. Cable orientation may vary with different pump brands.

Single speed pump configuration

Two-speed spa pumps can operate at one speed, which is common for two-pump hot tubs. Just use the usual and high-speed terminal connections while leaving the low-speed terminal empty.

Note: Your spa filtration or heating cycle should be running at high speed instead of low speed after the pump replacement. If it doesn’t, just swap the high and low speed cables.

Setting up the new pump

Reattach the bare copper jumper wire to the pump ground terminal.

Insert the pump and carefully align it with the connection ports.

Start with the base bracket screws, but do not tighten them yet.

Tighten the screw connections hand-tight. Do not use a wrench.

Tighten the pump base screws.

You may be able to reuse your old fittings or order new ones that fit your pipe size. We also have a special reducer (#BX9924) that converts a 2″ pump to a 1.5″ spa tubing.

Most spa pumps are designed to be installed below the water line (flooded suction) to ensure they fill with water. Their connections are compression fittings. Properly align the male threads of the wet end with the fitting to ensure proper seating of the integral o-ring.

flooding of the pump

When you have drained the spa, refill it with fresh water. After installation and wiring, but before turning on the spa, open the valves, if equipped, to flood the pump.

IMPORTANT: Flush the pump of any remaining air pockets by loosening the pump fittings until all air is removed. Leave the connection loose for 5-10 seconds, then retighten by hand. Running a pump dry will cause damage and void the warranty.

testing and inspection

Check the installation to make sure everything is connected properly.

Wipe up spilled water.

Reconnect power source.

Run the spa for a few minutes and check for leaks or air pockets.

Replace the equipment bay access door.

About voltage numbers

In the United States, standard household voltage (the voltage at a standard wall outlet) varies between approximately 110 and 120 volts. TVs, computers, lamps, etc. are designed for this area.

Large appliances such as ovens and clothes dryers are usually wired twice as hard, from 220 to 240 volts. Spa motors are designed for one of these two areas.

A voltage rating of 115 volts means it will work correctly in the 110 to 120 volt range. A device listed at 230 volts actually means it will work correctly in the 220 to 240 volt range.

Watts = Amps x Volts. The amperage will determine the size of the wiring and circuit breaker/GFCI required. It’s also a factor in what your device controls can accommodate. Wattage is the total amount of power used. Note that a 120 volt, 16 amp pump draws virtually the same wattage as a 240 volt, 8 amp pump.

Replacement pump specifications

Our replacement pumps are designed to meet or exceed OEM specifications. These 2-speed pumps can be easily configured for 1-speed use if required.

Pump speeds:

Low 1725 rpm

High 3450 rpm

Pump HP Hi/Lo Amps Input/Output Discharge Frame BX4100-C1 0.75 8.8/2.6 1.5″ Mid 48 BX4102-C1 1.5 13.3/4.1 1.5″ Mid 48 BX4102 -S1 1.5 13.3/4.1 1.5″ Page 48 BX4102-S2 1.5 13.3 /4.1 2.0″ Page 48 BX4114-S2 1.5 13.8/3.8 2.0″ Page 48 Pump HP Hi/Lo Amps On/Off Discharge Frame BX4104-S2 2.0 8.4/2.6 2.0″ Page 48 BX4115-S2 2.0 10/3 2.0″ Page 48 BX4110-S2 3.0 8.4/2.8 2.0″ Page 48 BX4105-S2 3.0 10/3.5 2.0″ Page 56 BX4108 -S25 3.0 10/3.5 2.5″/2.0″ Page 56 BX4116-S2 3.0 10/3.5 2.0″ Page 176 BX4.1 4.0 12/4.4 2.0″ Page 56 BX4106-S2 4.0 12/4.4 2.0″ Page 56 BX4109-S25 4.0.0″ 12/4.4 2.5″/2.0″ Page 56 BX4107-S2 5.0 16.4/4.8 2.0″ Page 56 BX4111-S25 5.4/BX4111-S25 4.8 2.5″/2.0″ Page 56 *Specifications are subject to change without notice will.