WH1T SERIESConstant Torque Motor (ECM)Efficiencies up to 14 SEERFeatures: WH1T feature a Constant Torque motor (ECM) which provides enhanced SEER performance with most WeatherKing outdoor units Versatile 4-way convertible design for upflow, downflow, horizontal left and horizontal right applications Factory-installed indoor coil. Sturdy cabinet construction with 1.0 inch [25.4 mm] of foil faced insulation for excellent sound and insulating characteristics. Field-installed auxiliary electric heater kits provide exact heat for indoor comfort. Kits include circuit breakers which meet U.L. and cUL requirements for service disconnect. 1 1/2 ton [5.3 kW] through 5 ton [17.6 kW] models are between 42 1/2 to 57 inches [1080 to 1448 mm] tall and 22 inches [559 mm] deep. All models meet or exceed 330 to 400 CFM [156 to 189 L/s] per ton at .3 inches [.7 kPa] of external static pressure. Enhanced airflow up to .7' external static pressure. Evaporator is constructed of aluminum fins bonded to internally grooved aluminum tubing. Suitable for application in mobile homes.