Person draining and cleaning hot tub for safe water use

How Often Should You Drain and Clean Your Hot Tub?

Owning a hot tub comes with relaxation and stress relief, but it also comes with responsibility. If you want clean, safe water, regular draining and cleaning are non-negotiable. But how often should you actually do it?

Why Draining and Cleaning Matters

Over time, hot tub water collects body oils, lotions, sweat, and environmental debris. Even with proper chemicals, this buildup can lead to:

  • Cloudy or foamy water

  • Unpleasant smells

  • Reduced sanitizer effectiveness

  • Bacteria growth

Draining and cleaning your hot tub on a schedule ensures safe water, better performance, and a longer lifespan for your spa.

General Rule: Every 3 to 4 Months

Most hot tubs need a full drain and clean every 3 to 4 months. This schedule works well for the average user. If you use your spa heavily, or multiple people soak often, you may need to drain it sooner.

Signs It’s Time to Drain Early

Even if it hasn’t been three months, drain and clean your hot tub if you notice:

  • Water that stays cloudy even after treatment

  • Persistent foam or scum on the surface

  • A strong chemical or musty smell

  • Difficulty maintaining water balance

These are signs that the water has too many dissolved solids and fresh water is needed.

Step-by-Step Cleaning Process

  1. Turn off the power to the hot tub.

  2. Drain the water using the built-in drain or a submersible pump.

  3. Clean the shell with a gentle hot tub cleaner and soft cloth.

  4. Rinse thoroughly to remove any cleaner residue.

  5. Clean or replace the filter according to the manufacturer’s instructions.

  6. Refill with fresh water and restart your system.

  7. Balance your chemicals before soaking again.

Tips for Keeping Your Hot Tub Cleaner Longer

  • Shower before using the hot tub to remove lotions and oils.

  • Keep the cover on when not in use.

  • Rinse filters monthly to maintain water flow and clarity.

  • Shock the water weekly to break down contaminants.

Consistency Is Key

Draining and cleaning your hot tub regularly keeps your water safe, extends the life of your equipment, and makes every soak more enjoyable. Stick to the 3- to 4-month schedule, and pay attention to warning signs that your water needs a refresh.

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