Hey hot tub owners can't get your hot tub to heat up. The problem might not be the heater, it could actually be your filter. Low water flow can cause your heater to stop working properly and low flow can be caused by a dirty filter. So before calling in a professional removing clean your filter to rule out the flow rate problem, then make sure the water level in your hot tub is high enough.

Finally, make sure there are no closed valves and there's nothing blocking your drain covers. Hopefully now your water will heat right up. Follow us at swim! University for more hot tub tips throughout the year.