How long each day should I run my spa filter?

Written by megan martin
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How long each day should I run my spa filter?
Spa filters should be run based on your use and hot tub type. (Bath Tub image by Ritu Jethani from

Most spa filter cycles are preset to run twice each day for four hours each time, but allowing the spa to cycle less often can save energy. Washington State University's energy program recommends running the filter twice a day for three hours. Running the filter during off hours between 6 a.m. to 10 a.m. and 5 p.m. to 9 p.m can further reduce your electricity costs if off-peak discounts are available in your area.

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Bottom Line

While three hours twice a day is generally considered minimum, if you use your spa less frequently it is possible that you may not need to run your filter this much. Ask your local spa dealer to recommend filter times based on your use and the quality of your water supply.

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