Hayward Comfortzone 11kw ElectricSpa & Hot Tub HeaterHayward electric spa heaters feature the same quality components and capabilities of heaters twice their size - for performance you can count on. These heaters are designed to fit into compact spaces such as beneath spa skirts and steps, and like every heater that carriesthe Hayward name, they are easy to install and service.Features:Perfect for Hot Tubs and spas Spas (above 70 G.P.M. an external bypass is recommended)240 Volts304 stainless steel tank304 stainless steel threaded head, safety sensor electric heatingelementService-ease design gives simple access to internal controlsHeater on indicator light1 year limited warranty