How Often Should You Change Your Hot Tub Water?

Hot tubs are all about relaxation and enjoyment but to keep them clean, safe, and performing their best, regular maintenance is key. One of the most important tasks? Changing the water.

So, 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 into reduce oils and contaminants

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.