A hot tub is more than just a backyard luxury—it’s a place to unwind, soothe sore muscles, and enjoy time with family and friends. But to keep that experience clean, safe, and enjoyable, you need to drain and refill your hot tub regularly and correctly. Doing so not only maintains water quality but also extends the life of your spa’s components. Here’s a step-by-step guide to doing it the right way.

Why Regular Draining Matters

Even with proper sanitizing and filtration, hot tub water gradually accumulates body oils, lotions, detergents, and minerals. Over time, these residues can lead to cloudy water, unpleasant odors, and buildup inside the plumbing. Most manufacturers recommend draining and refilling your hot tub every three to four months—or more often if it’s used frequently.

Fresh water means a better soak, fewer chemical imbalances, and less strain on your pump and heater.

Preparation: Power Off and Unplug

Before you start, turn off the power to your hot tub at the breaker. This is essential for safety since you’ll be working with water and electrical components. If your spa is hardwired, locate the dedicated circuit breaker and switch it off completely.

Remove accessories like headrests, the cover, and the filter housing lid so you have clear access to the tub and its fittings.

Step 1: Draining the Hot Tub

Most hot tubs have a drain spout or valve near the base. Attach a garden hose to the valve and direct the water to a safe drainage area—such as a driveway or lawn—where it won’t flood plants or flow into storm drains. Avoid draining chemically treated water directly into a sewer or natural waterway; check your local regulations for proper disposal.

If your hot tub doesn’t have a built-in drain, you can use a submersible pump to remove the water quickly. Once the tub is nearly empty, use a sponge or towel to soak up any remaining water.

Step 2: Cleaning the Shell and Jets

With the tub empty, it’s time to clean the interior. Use a non-abrasive cleaner designed for acrylic surfaces or a simple mix of white vinegar and water. Avoid harsh chemicals or scouring pads that can scratch the shell.

Remove and rinse the jets if possible. If they’re coated with scale or residue, soak them in a vinegar solution for 15–20 minutes, then rinse thoroughly. Wipe down the entire surface with a soft cloth until it’s spotless and dry.

Step 3: Cleaning the Filter

Your filter is the heart of your hot tub’s circulation system. Take it out and rinse it thoroughly with a garden hose, spraying between the pleats to remove trapped debris. For a deeper clean, use a filter cleaner or soak it overnight in a specialized cleaning solution.

If the filter looks worn or has been in use for several months, it’s best to replace it. A clean filter ensures better water flow and reduces strain on your pump.

Step 4: Refilling the Hot Tub

Once everything is clean and dry, you can start refilling. Place the garden hose into the filter compartment (if your model allows) to help prevent airlocks in the plumbing. Fill the tub with fresh water up to the level recommended by the manufacturer—usually a few inches above the highest jets.

When the tub is full, restore power at the breaker and run the pump for a few minutes to circulate the water and check for proper operation.

Step 5: Balancing the Water Chemistry

After refilling, it’s crucial to balance your water chemistry. Use test strips or a digital tester to measure pH, alkalinity, and sanitizer levels (chlorine, bromine, or salt, depending on your system). Adjust as needed using the appropriate spa chemicals.

Aim for a pH between 7.2 and 7.6 and total alkalinity between 80 and 120 ppm. Properly balanced water protects your skin, prevents corrosion, and keeps your spa components in top shape.

Good Habits Between Drains

To keep your water cleaner for longer, follow these simple habits:

• Rinse off before soaking to remove lotions, oils, and soap residue.
• Keep the cover on when not in use to prevent debris and evaporation.
• Rinse or clean the filter weekly if you use the spa often.
• Add sanitizer and shock treatments as recommended by your manufacturer.

These small steps help maintain water clarity and reduce how often you need to drain and refill.

A Clean Hot Tub Is a Happy Hot Tub

Draining and refilling your hot tub the right way isn’t just maintenance—it’s an investment in comfort, safety, and longevity. With regular care, you’ll avoid cloudy water, unpleasant odors, and mechanical issues, ensuring your spa remains a relaxing retreat for years to come.

So next time you slip into those soothing bubbles, you can do it with peace of mind—knowing your hot tub is as clean and well-cared-for as it feels.