How Often Should You Change Your Hot Tub Water?

The General Rule: Every 3 to 4 Months

In most cases, you should completely drain and refill your hot tub every three to four months. This routine helps prevent buildup from body oils, lotions, detergents, and other contaminants that can throw off water chemistry and strain your spa's filtration system.

Factors That Affect Water Change Frequency

While 3–4 months is a good starting point, several factors might mean you need to refresh your water more often:

• Frequency of Use – The more often your spa is used, the faster the water becomes saturated with impurities.

• Number of Users – A solo soak requires less maintenance than hosting regular group hot tub parties.

• Water Quality – If your source water is hard, full of minerals, or otherwise poor quality, you may need to change the water more frequently.

• Water Care System – Some hot tubs come equipped with advanced sanitizing or salt systems that can help extend the time between water changes.

  
  

Why It Matters

Over time, even with the right chemicals and filtration, your water can become saturated and harder to keep balanced. Old, overused water may look clean but can:

• Develop a cloudy appearance

• Produce a bad smell

• Irritate skin and eyes

• Strain your hot tub components

  
  

Refreshing your water every few months helps you avoid these issues and keeps your soaking experience enjoyable.

Keep Your Hot Tub Happy

Along with regular water changes, remember to:

• Test and balance your water regularly.

• Clean or replace your filters as needed.

• Shock the water weekly or after heavy use.

• Rinse off before getting in to reduce oils and contaminants.

  
  

Additional Maintenance Tips

To ensure your hot tub remains in top condition, consider the following maintenance tips:

Regular Cleaning

Cleaning your hot tub's surfaces and components is essential. Use a gentle cleaner designed for hot tubs to avoid damaging the materials. Regularly wipe down the shell and cover to prevent buildup.

Monitor Water Levels

Keep an eye on the water level in your hot tub. Evaporation and splashing can lower the water level, which can affect the pump and heater. Refill as necessary to maintain optimal levels.

Check the pH and Alkalinity

Regularly test the pH and alkalinity of your hot tub water. Ideal pH levels should be between 7.2 and 7.8. Proper balance helps ensure that sanitizers work effectively and protects your hot tub equipment.

Winterization

If you live in a colder climate, winterizing your hot tub is crucial. Follow the manufacturer's guidelines to properly drain and prepare your hot tub for winter. This step can prevent damage from freezing temperatures.

Enjoying Your Hot Tub

Finally, remember to enjoy your hot tub! Whether you're soaking alone or with friends, a well-maintained hot tub can provide relaxation and stress relief.

By sticking to a routine and changing your water every few months or sooner if needed, you’ll keep your hot tub sparkling, sanitary, and ready for relaxation year-round.

For more information on hot tub maintenance, check out this guide.