Waykar 12,000 BTU Ductless Mini Split Air Conditioner & Heater, 20.5 SEER2 Efficient with App Control115V & 230V Options 115V plugs into a standard outlet for easy installation while 230V runs with lower electrical load for greater efficiency. 12,000 BTU Cooling & Heating Quickly cools or heats rooms up to 750 sq. ft. Super Energy Efficient with a SEER2 rating of 20. 5, this system is nearly double as efficient as many standard models (typical SEER around 13). Cooling & Heating in One Get year round comfort with a built in heat pump for both summer