How Often Should You Change Your Hot Tub Water?

Your hot tub is installed and running and you and your family are enjoying the warm, soothing waters almost every day. But those good times won’t last if you don’t take care of your spa. Not only do you have to regularly treat and clean the water in your hot tub, you also need to change the water in order to maintain the proper chemical balance and cleanliness in your new favorite relaxation location.

Changing the water sounds easy enough, and it really is, but how often do you change the water. Obviously you don’t want to overdo it as that will cause your water bills to skyrocket pretty quickly, but you don’t want to wait too long, either, as that could mean you are soaking in water that has that “not so fresh” feeling.

Today, let’s examine how often you should change the water in your spa and we will even talk about a few warning signs that let you know it’s time to flush out that system.

Time and Usage

No matter how often you use it or don’t use it, the water will only stay good in your hot tub for so long before you will need to change it. Of course, the less you use it means you will be able to go longer between changes, but at some point the water stays in there and too long and you need to change the water. It’s all about balance. Isn’t everything in life? The more you use it, the more often you have to change it, but don’t let any water stay in there for too long without changing it.

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Break Out the Calculator

What? I have to do math? I know, who ever thought that soaking in a hot tub would require you to do a little math. Luckily, it is pretty easy.

First, take the total number of gallons your hot tub will hold and divide it by 3. Take this result and then divide it by the number of bathers you will have in your hot tub every day. The final number you get will be approximately how often you need to change the water in your hot tub.

For example, let’s say you have a hot tub that holds 480 gallons of water with 4 bathers per day. Dividing 480 by 3 will give you 160. Now, take 160 and divide it by 4. This will give you 40. This means that you will need to change the water in your hot tub every 40 days.

Of course, you need to remember that this is really a guideline and not set in stone. In the end the timing may vary based on the quality of water in your area and the environment where your hot tub lives day in and day out. Still, it is a great guide to help you develop a water changing schedule for your spa.

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Warning Signs That Signal Change

There are several warning signs that will tell you it is time to change the water in your hot tub, all you have to do is watch for them.

Cloudy Water

If your water is cloudy and no amount of spa shock If you click this link and make a purchase, we earn a commission at no additional cost to you. seems to clear it up, it is time to start fresh with new water.

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Foam

If your water has a foamy look to it and your foam remover If you click this link and make a purchase, we earn a commission at no additional cost to you. won’t knock it out once and for all, it is time to consider getting rid of that old water.

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Smelly Water

There isn’t a clearer signal out there that it is time to change the water than a hot tub that just smells foul. If your spa doesn’t have that fresh, clean smell, drain it, clean it If you click this link and make a purchase, we earn a commission at no additional cost to you. , and start again.

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Check the Calendar

Even if your hot tub isn’t giving you any warning signs, it is still a good idea to change the water if it has been more than 2 months between water changes.

Other Cleaning Tasks

When you do change the water in your hot tub, you should also go ahead and perform a few other cleaning duties to ensure the new water stays clean for as long as possible. With the water drained, go ahead and change or clean the filter If you click this link and make a purchase, we earn a commission at no additional cost to you. in your spa. Next, give the sides of your shell a good scrubbing to remove any dirt and debris from the hot tub before new water ever touches the sides.

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Final Thoughts

New hot tub owners often worry about when they should or should not change the water in their hot tub. With a little experience, however, and your trusty calculator, you will quickly learn exactly when you should do a water change. Pay attention to your hot tub and it will tell you when the time has come for a water change.

If it doesn’t, then you can always rely on your calendar or your trusty calculator to figure out when you should perform a water change.

Happy Soaking!

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