WeatherKing® Gas Furnace, Versus™ Line Series, W921W Model, 42000 Btu/hr Input BTU Rating, 39900 Btu/hr Output BTU Rating, 115 V Voltage Rating, 10 A Amperage Rating, 1240 cfm Rating, 1/2 hp HP Rating, 92 % AFUE Rating, 11.7 kW Wattage, 1 ph Phase, 60 Hz Frequency Rating, 1 Number of Stages, 4-Way Multi-Position Configuration, Connection Type: NPT, 1/2 in Connection, 34 in H x 17-1/2 in W Cabinet Dimensions, ECM Motor Type, 3 ton Tonnage, Direct Spark Ignition Type, 20 to 50 deg F Temperature Rise, Bluetooth® Control Additional Information