3 min read

Hot Tub Maintenance Checklist: When to Drain and Fill?

Hot tubs are a popular way to relax and unwind after a long day. They provide an excellent way to relieve stress and soothe sore muscles. However, to keep your hot tub in excellent condition, it’s essential to maintain it regularly.

One of the crucial aspects of hot tub maintenance is draining and refilling it regularly. This article discusses how often you should drain and fill your hot tub.

Why Do You Need to Drain and Fill Your Hot Tub?

Before we discuss how often you should drain and fill your hot tub, let’s first understand why it’s essential. Hot tubs are designed to hold a specific amount of water, usually between 250 to 500 gallons.

Over time, the water in the hot tub can become contaminated with bacteria, dirt, oils, and other debris. This can lead to a buildup of harmful chemicals and minerals that can cause skin irritation, eye irritation, and other health issues.

Draining and refilling your hot tub regularly helps remove these contaminants and ensure the water remains clean and safe. It also helps maintain the water’s pH balance, crucial for the hot tub’s performance and longevity.

How Often Should You Drain and Refill Your Hot Tub?

The frequency of draining and refilling your hot tub largely depends on how often you use it and how well you maintain it. If you use your hot tub frequently, you’ll need to drain and refill it more often than if you use it infrequently. Similarly, if you maintain your hot tub well and keep the water clean and balanced, you may not need to drain and refill it as often.

As a general rule, it’s recommended to drain and refill your hot tub every three to four months. This interval suits most hot tub owners and ensures the water remains clean and safe. However, if you use your hot tub frequently or notice the water becoming cloudy or foamy, you may need to drain and refill it more often.

How to Drain and Refill Your Hot Tub

Draining and refilling your hot tub is a straightforward process that you can do yourself. Here are the steps:

  1. Turn off the power to the hot tub. This will ensure that you don’t accidentally turn on the hot tub while it’s empty.
  2. Locate the drain valve on your hot tub. This is usually located at the bottom of the hot tub. You may need to consult your hot tub’s manual to find it.
  3. Attach a garden hose to the drain valve and direct it to a suitable drainage area. Ensure that the drainage area is suitable for the water that will come out of the hot tub.
  4. Open the drain valve and let the water drain completely. This may take several hours, depending on the size of your hot tub.
  5. Once the water has drained, use a clean cloth to wipe down the hot tub’s interior and remove any remaining debris.
  6. Refill the hot tub with clean, fresh water. You can use a garden hose to fill the hot tub, but ensure the water is not too cold or hot. The ideal hot tub water temperature is between 100 to 104 degrees Fahrenheit.
  7. Once the hot tub is complete, turn on the power and let the water circulate for at least 30 minutes. This will ensure the water is well-mixed and the chemicals are evenly distributed.
  8. Test the water’s pH levels and adjust them as necessary. You may need to add chemicals to balance the pH levels.


Draining and refilling your hot tub regularly is essential to maintain its cleanliness and performance. By following the steps outlined in this article, you can quickly drain and refill your hot tub and keep it in excellent condition for years.

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