Do you love relaxing in your hot tub but wonder how often should you change your hot tub water to keep it clean and safe?
It’s a common question among hot tub owners. The answer isn’t as straightforward as you might think—it depends on a few things. Let’s find out.
How Often You Should Change Your Hot Tub Water?
It depends on how often you use it and how often you add chlorine. Some experts recommend changing the water every 3 to 4 months, while others suggest doing it every 2 months.
Ultimately, it’s important to monitor your water chemistry and change the water when needed to keep your hot tub in top condition.
When To Change Hot Tub Water?
Its time to change your hot tub water if:
Water Is not Clean

If the water in your hot tub has become cloudy or discolored, it is a sign that the water quality is compromised and needs to be changed.
Dirty water means it’s time to drain your hot tub and add fresh, clean water to keep your water clean and clear.
Strong Odor
If your hot tub water has a strong smell, it likely indicates that the water is contaminated with bacteria and other impurities.
You need to change the water in your spa on a regular basis to prevent the water from becoming discolored and filled with total dissolved solids.
Its Been More Than 3-4 Months:

Hot tub maintenance is crucial for keeping your spa clean and safe for use. You need to drain and change your water on a regular basis, ideally every three to four months.
If the water still looks clear and odor-free, you may not need to drain and replace it as often. But, if the water starts to become cloudy or discolored, it’s time to change the water.
Usage Frequency
The more you use your hot tub, the more the water collects oils, lotions, and sweat from your body.
Frequent users will find the need to refresh the water more often to keep it inviting and hygienic. Water quality is essential to enjoy a clean and clear hot tub.
Number of Users

More bathers mean more contaminants, which can lead to cloudy water or discolored water. If you notice these signs, it’s time to change the hot tub water.
Using a hot tub with dirty water can also result in a harder time keeping the water chemistry balanced.
High Level of Chemicals
Drain water from your hot tub if you find high levels of chlorine or other chemicals. Many people use a garden hose to fill their hot tubs with fresh water. Hot tubs hold a significant amount of water, so it’s often necessary to change it regularly.
Water Hardness
Water comes in different types, with varying amounts of minerals like calcium and magnesium. If water is hard, you need to change the water in your hot tub often to keep it clean and functioning properly
Filter and Purification System Efficiency

A top-notch filter and purification system work like a dream team to combat dirt and bacteria, keeping the water clearer for longer. If your system is on point, it can extend the life of your water, delaying the need for a change.
Water Care For Spa or Hot Tub
Here’s what you can do to extend the life of your hot tub water:

Drain and Refill
One important aspect of water maintenance is to drain and refill your spa water regularly.
Regular water changes are essential for spa ownership because used water can only hold so much chemicals and contaminants. By replacing the water with fresh and soft water, you create a much more comfortable soak.
Test It

Use test strips to measure the pH and alkalinity levels. If things are off, you’ll know it’s time to add some chemicals to get everything back in balance.
Use Quality Chemicals
High-quality chemicals fight off germs and keep the water crystal clear. They’re also less likely to leave behind any residue that could make the water look murky. Always follow the directions on the labels to keep your water in tip-top shape.
Clean your filters
Regularly rinse and deep clean your hot tub filters to ensure they are working effectively in trapping dirt and oils, keeping your water clean. This will help extend the life of your filters and maintain the quality of your hot tub water.
Cover your hot tub
Always cover your hot tub when not in use, just like you would with a bed. This prevents debris from entering and helps keep the new water warm, saving energy. Remember to always secure the cover after each use.
Conclusion
As a general rule of thumb, you should aim to change the water every time you soak to avoid exposing yourself to a lot of bacteria and impurities that can build up over time. With a little care, you can enjoy your hot tub for many relaxing soaks to come!