Hot Tub Heaters for Most Major Spa Brands
If your hot tub isn't quite as hot as it used to be, your heater may be on the way out. However, before replacing the heater, check the control panel to make sure your tub is operating properly. Also make sure you have proper water flow (nothing is clogged). If both of these check out and you still have cold water, it's time for a new heater.