4 kW hot tub spa heater with pressure switch. This 4 kW spa heater is a factory original part for QCA Spas. This state-of-the-art heater is reliable, less expensive to install and maintain and is designed for advanced water temperature management. This is the heater that QCA previously used in their tubs which includes a pressure switch, and with it being easy to install and easy to service this heater is the one for previous model year QCA Spas! 240V 15" x 2"
