How Often Should I Change the Water in a Hot Tub or Swim Spa?

Lounging in a hot tub or doing laps in a swim spa both become even more enjoyable when the water is clear and inviting. So how do you keep it that way? Below, we’ll talk about how often you should change the water in your backyard oasis so that every soak or swim feels pleasant and refreshing. Here’s what you should know!

Why It’s Important to Drain Swim Spa or Hot Tub Water

Over time, contaminants like oil, dirt, and bacteria can build up in your spa or hot tub. There comes a point when the chemicals you use to keep your water clean may not be as effective against these contaminants. This buildup can then lead to water quality issues, such as cloudiness and unpleasant odors. On top of that, imbalanced water chemistry can put extra strain on the pumps and the heater, leading to potential damage.

By draining your spa and refilling it with fresh water, you’re giving it a complete reset. This allows you to enjoy an environment that not only looks inviting but is also hygienic. Plus, clean water feels way better on your skin. Along with other maintenance tasks, changing water in a swim spa or hot tub allows it to work at its best and provide you with a healthier, worry-free experience. To learn more about the basics of hot tub and swim spa maintenance, you can also contact your local spa dealer.

When Is It Time to Change the Water In Your Spa?

So how often should you drain and refill your spa? The general rule of thumb is that you should change the water every three or four months. Do note that this is just a recommendation. The exact timeframe will depend on a few factors. How often you use your hot tub or spa, the number of people using it, and the overall care you provide all play a role. This means you may have to change the water more frequently if you use your swim spa for daily exercises or if you host weekly hot tub gatherings with your family. Once you notice these signs, it might be time for a water change:

  • Cloudy Water – Water that appears cloudy or murky is a visual cue that contaminants have built up.
  • Unpleasant Smell – Strong odors could mean that bacteria and organic matter might be present.
  • Excess Foam – Too much foam often suggests a chemical imbalance.
  • Irritation – Even if the water still looks okay, the water balance might be off. This can cause irritation or discomfort.
  • Water Treatment Issues – If it’s harder than usual to adjust the chemical levels, it could mean that the water reached its limit for effective treatment, and a fresh start is in order.

How to Drain and Refill Your Hot Tub or Swim Spa

Replacing dirty water is one of the key aspects of proper water maintenance. As mentioned, it’s best to do it at least four times a year. Here’s a quick guide through the whole process:

Step 1: Switch off the power at the breaker before you start draining your hot tub or spa.

Step 2: Drain the water properly and carefully. You can do this by using a garden hose or a pump. Other spa or hot tub owners prefer using the drain valve. Make sure to direct the water to an area with good drainage to prevent flooding.

Step 3: Clean the interior surfaces using a mild cleaner. Check and clean the water filters as well. Make sure to rinse everything thoroughly.

Step 4: Close the drain valve and remove any remaining water with a wet/dry vacuum.

Step 5: Attach a hose to a clean water source and start refilling. Keep an eye on your spa and take note of how much water it holds so you can stop the refill when it reaches the appropriate level.

Step 6: Use testing strips or a testing kit to check the chemical balance and pH levels. Add the right chemicals as needed to keep the water properly balanced.

Using a Swim Spa or Hot Tub Cover

A durable, well-fitting cover plays a big role in keeping the water clean and clear. It keeps dirt and debris out, reducing the need for frequent cleaning. On top of that, a cover slows down water evaporation when your hot tub or swim spa isn’t being used. This means you don’t have to worry about constantly topping up. Overall, a cover makes it easier to maintain a swim spa or hot tub, helping you enjoy clear water and hassle-free relaxation.

Other Water Care Tips for Your Spa

  • Encourage everyone to rinse in the shower before getting in. This can lessen the oils and lotions that can lead to cloudy water.
  • Test the water on a regular basis. Checking your spa or hot tub’s chemical levels once or twice a week can make it easier to keep the water chemistry balanced.
  • Clean and replace the water filters if necessary. It’s also a good idea to have more than one filter so you can rotate them and extend their lifespan.
  • Be proactive when it comes to potential issues. If the water looks off or if you notice any unusual odors, fix the problem right away to keep it from getting worse.

Keep Your Spa Water Safe and Crystal Clear

Hot tubs and swim spas provide many amazing benefits. If you want to make the most of each one, it’s essential to put in the effort to keep the water clean and safe for use. By following a few simple steps and having a better understanding of how often to change the water, you ensure that every dip is always a delight. A little care goes a long way when it comes to spa ownership, allowing you to enjoy a crystal-clear retreat that suits your needs and lifestyle.

You can also download our buyer’s guide for more information on choosing the right spa for your home.

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