Samsung's line of Mini Split Air Conditioners provide both heating and cooling. These units combine stylish looks with robust performance and world-class reliability. The Smart Inverter compressor offers varying ranges of heating and cooling capacity. This saves money and offers better temperature control. These units use R410A refrigerant and R410A flare connections. Hand-held controller included. (Optional wall mounted programmable thermostat may be purchased separately). Samsung Limited Warranty: Requires professional HVAC-Technician to fulfill warranty. NOTE: These products require professional installation. All warranty and technical support is to be handled directly through Samsung and require a professional HVAC-Technician to perform all warranty related work. This product cannot be returned to a retail store or to Sunlight Supply?. All repairs and warranty related services are handled on site by a professional HVAC-Technician. Specifications for 36,000 BTU Unit: Operating temperature range, cooling: 14?F to 115?F, heating: 5?F to 75?F. Nominal Capacity cooling: 36,000 Btu/h, heating: 36,000 Btu/h. Capacity range cooling: 9,000 Btu/h to 38,000 Btu/h, heating: 9,000 Btu/h to 45,000 Btu/h. (SEER = 18.0) (HSPF = 9.0), Voltage: single phase, 208 – 230 volt. Max Breaker Size: 30 Amp. Pipe Connections: 1/4 in and 5/8 in up to 50 ft. in length, (not included with unit). Line Set: Offered separately and should be installed by a qualified HVAC-Technician.