inflatable hot tub temperature

In this article we’re looking at the slightly unusual topic of keeping a lower temperature inflatable hot tub.

When new owners first get into the world of inflatable hot tubs, they often ask what the maximum temperature is they can heat the water up to (answer: 104F). That’s probably not surprising, given how wonderful it is to slip into the bubbling hot waters to soak and massage your stress and aches away.

However, there are some people who want to use their portable hot tub with a lower temperature – and there are some occasions when setting a lower temperature is the right thing to do.

Can You Use Your Inflatable Hot Tub At A Low Temperature?

The answer is definitely yes. If you look at the best-selling Lay-Z Spa Miami, for example, you’ll see that it has a heater unit with a digital panel which allows you to set the exact temperature of the water. This ranges from 68F to that maximum of 104F. This range is true of all quality inflatable hot tubs, such as those made by Lay-Z Spa, Coleman, MSpa, and so on.

So if you want a lower-than-maximum water temperature, it’s a matter of setting the low temperature you want and letting the heater do its work.

Top Tip: Remember that you’ll need to check that the water you put into your inflatable hot tub is colder than your desired temperature, otherwise your heater unit will be confused! To check the temperature, either use a special hot tub thermometer or simply fill your inflatable hot tub with cold water and turn on the digital heater. After a few seconds, it will display the temperature of the water.

When Should You Set a Low Temperature In Your Inflatable Hot Tub?

There are various reasons and occasions for setting your water temperature lower than 104F. So even if you are determined to keep your water bubbling away at the maximum heat it can reach, it’s worth thinking about the following reasons:

Personal Choice

You might find that 104F is simply too hot for your personal preference. In which case, set the water temperature lower and you’ll enjoy your inflatable hot tub so much more.

The simplest and most cost-effective way to lower the temperature of the water is to turn off the water heater! You can also leave the cover off, so that the heat evaporates from the water, speeding up the process. But if you are going to leave the cover off, please don’t leave the hot tub unattended if there are children around.

Keep testing the temperature of the water every 30 minutes or so, to see if it is at a temperature you like. When you find that temperature, put the cover back on, wait a couple of minutes and then turn the heat unit on.

The digital display will now show you the water temperature. Remember this reading. That’s because when you come to drain and re-fill your inflatable hot tub, or when you fill your hot tub at the start of next season, you’ll know your exact preferred temperature.

The Local Climate

Some people live in an area that is so hot that they want to use their hot tub as a place to cool off. There’s certainly something refreshing about stepping into a cool spa after your body has been hot all day.

A word of caution, however. When your body is hot, then suddenly plunging into cold water can zap your body of its heat 25 times quicker than cold air. So it’s best to ease in slowly and let your body acclimatise to the sudden drop in temperature.

Also, remember that a hot tub is insulated, so if you leave your cover off, then the sun will heat up the water and raise its temperature. Therefore, as soon as you finish in the tub, put the cover back on. You’ll be keeping the water cool if you do.

If you live in a place where there is a lot of sun, you might want to put up a permanent covering over your hot tub, such as a gazebo or a hot tub tent. This will keep the water from heating up too much, and it will help prolong the life of your portable spa.

Young Children

Children’s skin is much more sensitive to heat than an adult’s, so they can get scalded or even burned in temperatures that wouldn’t affect an adult.

At the same time, children are less able to recognize the onset of overheating, dizziness or feeling dehydrated from being in the hot tub, usually because they are distracted by having having so much fun.

That’s why, if your inflatable hot tub is going to be used regularly by children then it’s best to set the water temperature a few degrees lower – say 98-100F. Even then, children should only spend only a maximum of 5-10 minutes at a time in the hot tub before getting out and doing something else.

They will then need to wait 20-30 minutes before they get back in. Also, even at the lower temperatures, make sure that children have plenty of water to drink so they re-hydrate.

Medical Requirements

There are certain medical conditions that mean it’s safer to have your hot tub water at a slightly lower temperature than the max.

These include:

  • heart conditions
  • pregnancy
  • sensitive skin or skin conditions
  • asthma
  • men who are trying to become fathers

So if you or anyone who is going to use your inflatable hot tub fall into any of these categories, then lower the water temperature. If it’s just a one-off, then turning off the water heater and leaving the cover off for an hour should do the trick. It’s then a simple matter of turning the heater back on when they have finished in the hot tub, to boost the water back up to your preferred temperature.

It’s also worth pointing out that men who are trying to become fathers need to avoid sitting in water that is too hot. Therefore a cooler hot tub is a better choice.

To Save Money

Owning an inflatable hot tub costs money, with increased energy bills and running costs. Therefore, anything you can do to cut those costs can be an advantage.

One easy way to cut down on your energy bills is to lower the temperature of the water in your hot tub. Your portable hot tub holds hundreds of gallons of water, and heating that volume of water – and maintaining it at a high temperature – costs money.

Even by dropping the water temperature a couple of degrees you can save a few dollars a week and you’ll hardly notice the difference when you use you tub.

If you use your inflatable hot tub from Spring through to Fall, those dollars can soon add up by the end of the year.

We suggest you start off by lowering the water temperature to 100F and see how you get on with that. If you purchase a floating thermal blanket for your hot tub, you’ll maintain the water at that temperature, meaning you won’t have to give it a boost before you get in. This will also cut down on energy bills.

If you find that 100F is not right for you, then try 102F. You might be pleasantly surprised at how enjoyable it is – and you’ll certainly appreciate the slightly lower expenses.

In Between Times

If you use your inflatable hot tub regularly – by which we mean 4-5 times a week or more – then it’s best to keep your heater unit going all the time.

Even though this incurs costs, it’s actually cheaper in the long run to maintain the heat of the water in this way than letting it get cold and having to heat it from scratch all over again.

We suggest that you lower the temperature by 5 degrees from your normal operating temperature. So if you usually have the water at the maximum of 104F, then when you’re not using your hot tub, run the heater at 99F. Then, an hour or so before you want to use your hot tub, set the heater control up to your usual temperature. By the time you’re ready to get into your hot tub, the water will exactly how you like it.

Going On Vacation

Many people think that when they are going away on vacation they need to shut off their inflatable hot tub completely.

However, if you’re going away for up to a week, it’s a better idea to lower the temperature of the water heater by 10 degrees and keep the heater ticking over.

In this way you’ll be maintaining warmth in the hot tub water which means you’ll save time and energy – and money – when you return from your vacation. It’s actually cheaper to keep your heater unit running at a low temperature and then give it a boost when you return than to let the water go cold and have to re-heat it.

For vacations of 7-10 days or more, it’s up to you whether you turn the hot tub off completely, and then re-heat the water when you return (although to be honest, I’d drain the hot tub before I went and re-fill it when I got back, so that no bacteria or nasties develop in the water while I’m away.

Alternatively, you could set the water heater temperature to about 80F and keep the water warm while you’re away.

What About The Water Quality In A Lower Temperature Inflatable Hot Tub?

Because we naturally think an inflatable hot tub needs to be hot (after all, it’s there in the name!) we tend to think that the chemicals we add to the water are more efficient at high temperature.

However, the opposite is actually true.

That’s because chlorine and bromine perform better at cooler temperatures. This means it’s easier to maintain proper water quality if you lower the temperature of the water in your inflatable spa.


We’re not suggesting that you need to run your inflatable hot tub at a lower temperature. We just wanted to point out that it is possible to do so, and that there are certain advantages in lowering the temperature.

There are also times when it is advisable to drop the temperature by a few degrees – most notably if children or anyone with one of the medical conditions we outlined is going to use your spa.

It’s also a good idea to lower the water temperature when you’re not using your hot tub. In that way, you’ll end up saving energy and cutting your heating bills.

We hope this article has given you food for thought. Maybe you’ll even experiment with some of our suggestions. Thanks for reading!

Recommended Reading

Keeping Children Safe In Your Inflatable Hot Tub

Easy Inflatable Hot Tub Tips

Money Saving Tips For Inflatable Hot Tub Owners

Photo of author

Author S Krone

A lawyer never retires. So I would just say that I am not as active as I used to be. Now I simply dedicate myself to fishing, my hobby, and my grandchildren. For Business Finance News I write about legal aspects of mortgage policies, mostly regarding the rights of policyholders. I also have articles about personal injuries.

Thank you for visiting

Leave a Comment

Business Finance

About Us

Business Finance News is a brand oriented to business owners and dedicated to analyzing and comparing the cost and conditions of B2B procurement of goods and services through free quotes delivered by business partners.


Address 5050 Quorum Drive, (75254) Dallas TX

telephone 844-368-6072


A personal loan is a medium term loan with a fixed interest rate that is repaid in equal monthly payments and it's usually limited to 24 months. Loan offers and eligibility depend on your individual credit profile. Our lenders can help you obtain as much as $3,000 depending on the lender, your state and your financial situation.

The owner and operator of is not a lender and is not involved into making credit decisions associated with lending or making loan offers. Instead, the website is designed only for a matching service, which enables the users contact with the lenders and third parties. The website does not charge any fees for its service, nor does it oblige any user to initiate contact with any of the lenders or third parties or accept any loan product or service offered by the lenders. All the data concerning personal loan products and the industry is presented on the website for information purposes only. does not endorse any particular lender, nor does it represent or is responsible for the actions or inactions of the lenders. does not collect, store or has access to the information regarding the fees and charges associated with the contacting lenders and/or any loan products. Online personal loans are not available in all the states. Not all the lenders in the network can provide the loans up to $3,000. cannot guarantee that the user of the website will be approved by any lender or for any loan product, will be matched with a lender, or if matched, will receive a personal loan offer on the terms requested in the online form. The lenders may need to perform credit check via one or more credit bureaus, including but not limited to major credit bureaus in order to determine credit reliability and the scopes of credit products to offer. The lenders in the network may need to perform additional verifications, including but not limited to social security number, driver license number, national ID or other identification documents. The terms and scopes of loan products vary from lender to lender and can depend on numerous factors, including but not limited to the state of residence and credit standing of the applicant, as well as the terms determined by each lender individually. 


APR (Annual Percentage Rate) is the loan rate calculated for the annual term. Since is not a lender and has no information regarding the terms and other details of personal loan products offered by lenders individually, cannot provide the exact APR charged for any loan product offered by the lenders. The APRs greatly vary from lender to lender, state to state and depend on numerous factors, including but not limited to the credit standing of an applicant. Additional charges associated with the loan offer, including but not limited to origination fees, late payment, non-payment charges and penalties, as well as non-financial actions, such as late payment reporting and debt collection actions, may be applied by the lenders. These financial and non-financial actions have nothing to do with, and has no information regaining whatsoever actions may be taken by the lenders. All the financial and non-financial charges and actions are to be disclosed in any particular loan agreement in a clear and transparent manner. The APR is calculated as the annual charge and is not a financial charge for a personal loan product. 

Late Payment Implications

It is highly recommended to contact the lender if late payment is expected or considered possible. In this case, late payment fees and charges may be implied. Federal and state regulations are determined for the cases of late payment and may vary from case to case. All the details concerning the procedures and costs associated with late payment are disclosed in loan agreement and should be reviewed prior to signing any related document. 

Non-payment Implications

Financial and non-financial penalties may be implied in cases of non-payment or missed payment. Fees and other financial charges for late payment are to be disclosed in loan agreement. Additional actions related to non-payment, such as renewals, may be implied upon given consent. The terms of renewal are to be disclosed in each loan agreement individually. Additional charges and fees associated with renewal may be applied. 

Debt collection practices and other related procedures may be performed. All the actions related to these practices are adjusted to Fair Debt Collection Practices Act regulations and other applicable federal and state laws in order to protect consumers from unfair lending and negative borrowing experience. The majority of lenders do not refer to outside collection agencies and attempt to collect the debt via in-house means. 

Non-payment and late payment may have negative impact on the borrowers’ credit standing and downgrade their credit scores, as the lenders may report delinquency to credit bureaus, including but not limited to Equifax, Transunion, and Experian. In this case the results of non-payment and late payment may be recorded and remain in credit reports for the determined amount of time.