How Spa Filtration Works

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All traditional hot tubs include a filter cartridge that captures debris and small particles as the water passes through it. The movement of the water is activated by the spas internal pump. When the pump is not activated the water sits idle. Most spas have an automatic filtration cycle 4 hours out of every 12-hour cycle use the low-speed function of one of the primary pumps which is. The cycle begins once you first turn the breaker to your spa on. Example if you turn the power of your spa on at noon the spa will filter between noon and 4pm and the pump will then turn off and the water will sit idle, and then turn back on at midnight and go off again at 4am.

So, if your spa is near a bedroom area and you don’t want to hear the sound of the filtration system simply turn the breaker to your spa off and then on at 7pm or am and it will only operate between 7 to 11 am and pm.
Also keep in mind the filtration pump also kicks on whenever your spa is calling for heat. Heaters require water to pass through it and this water also passes through your filter cartridge.

Most hot tubs allow you to extend the 4-hour window, so the pump operates longer, and some spas even offer filtration systems to operate 24/7 by using an independent circulation pump. The question often asked, “does this make it a better filtration system”. No, it does not make it better, but it does allow you to filter and eliminate debris and small particles quicker. If you’re using your spa once a day, a 4-hour filtration cycle every 12 hours is more than adequate. But if you have multiple users going into the spa every day, especially children, then the 24/7 system should be a consideration.

B – Choosing the Best Filter
C – Finding a Filter Model
D – What is Microban