Do I Need to Change Spa Water?

If you use a traditional chlorine or bromine system, you should change the water in your spa about every three to four months. If you use the FreshWater® Salt Water System, you'll need to change the water in your hot tub a lot less often—just once a year. Discover the FreshWater® Salt Water System.

Is it necessary to change spa water?

Although the general rule for changing spa pool water, for a spa size of between 700 - 4000 liters of water, is every 3-4 months, you may need to change your water more regularly if your spa pool is in heavy use. For perspective, average use is 2-3 days per week and heavy use is 4-5 days per week.

How often should spa water be changed?

We recommend customers to change their hot tub water every 3 to 4 months. The reason we recommend this is that as your continue to add more chlorine, it will start to dissolve slower and slower until the chlorine doesn't dissolve in your hot tub anymore.

Sarah Jenkins

Sarah Jenkins

Senior Technology Editor & AI Specialist

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.