Samsung Standard Evaporator Indoor Unit, 208 to 230 V, 0.5 A, 50 W, 60 Hz, 1 ph, 3 Fan Speeds, 18000 Btu/hr Cooling, 21000 Btu/hr Heating, 401 to 486 cfm Cooling, 465 to 623 cfm Heating, 12.85 EER Rating, 21.5 SEER, 9 HSPF, Connection Type: Flared, 21 A Fuse Rating, Tonnage: 1.5 ton, 41 dBA Sound Level, Wall Mounting, HIPS, White, 64 to 90 deg F, 8-7/16 in Overall Length, 41-9/16 in Overall Width, 11-3/4 in Overall Height, For Use With: Multi-Zone Outdoor Units, Additional Information: R-32 Refrigerant Type