RheemВ®, RD18AY24AJVCA, Heat Pump, Series: RD18AY, 2 ton Nominal, 24000 Btu/hr Heating, 208/230 V AC, 1 pH, 60 Hz Power Source, 3175 cu-ft/min Flow Rate, 13 EER, 19 SEER, 10 HSPF, Variable Speed Inverter-Driven Compressor, R-454B Refrigerant, 3/4 in Suction Line, 3/8 in Discharge Line, 1/2 hp Motor, 550 rpm, 61 dBA Sound Level, 36.6 in H x 19.8 in W x 40.4 in L Dimensions