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A PTC (Positive Temperature Coefficient) heater is really a type of heating element of which provides safe, high efficiency, and consistent warming. In Lay-Z-Spa very hot tubs, PTC heaters are used to be able to maintain the water temperature at a comfortable level while supplying key advantages more than traditional heating factors. How PTC Heating elements Work PTC emitters are made regarding ceramic materials that have self-regulating components. As the heat rises, the electric resistance of the part