11-1/2 Inch Spa & Hot Tub Heater with Thermostat - Perfect for Relaxation & Hydrotherapy at Home

Spa and hot tub heaters are used to bring the water in spas and hot tubs up to a comfortable temperature. They provide warmth by heating a holding tank that feeds to the spa or tub or by mounting to piping and heating water as it's pumped to the spa or tub. These heaters have temperature controls and a high-limit thermostat. This listing is for each. Technical Specification Item Spa and Hot Tub Heater Min. Flow Rate 5/15 gpm Inlet Size/Bushing Size 1-1/2 in NPT Thermostat Included Unit-Mounted Voltage 120/240V AC Phase 1 Wattage Output 1.5kW/6.0kW Amperage 12.5A/25A Control Type Mechanical Selector Dial Overall Length 11 1/2 in Overall Width 2-3/8 in Diameter Heating Method Flow Through For Use With N15/03103/N15/03104 Standards UL Recognized Nominal Voltage - HVAC 120V AC, 240V AC