Samsung's Free Joint Multi of Multi-zone Mini Split Air Conditioners provide both heating and cooling. The units are offered in two-zone combinations with wall mounted indoor units, only. The Smart Inverter compressor offers consistent cooling and heating capacity inside despite changing outdoor conditions. This saves money and offers better temperature control. These units use R410A refrigerant and use R410A flare connections with insulated copper refrigerant lines sold separately. Hand-held controller included; optional wall mounted programmable thermostat sold separately. Samsung Limited Warranty requires professional HVAC Technician to fulfill all warranty work. All warranty and technical support is handled directly through Samsung. This product cannot be returned to a retail store or to Sunlight SupplyÂ. Specifications for 24,000 BTU Unit with two 12,000 BTU Indoor Units: Operating temperature range, cooling: 23çF to 115çF, heating: 5çF to 75çF. Rated capacity for each indoor unit is: 12,000 BTU cooling/13,000 BTU heating. SEER rating is 16. HSPF rating: 8. Voltage: single phase, 208-230 volt. Max Breaker Size: 25 Amp. Pipe Connections (2): 1/4 in and 3/8 in with up to a total of 100 ft in length. Part 700562 uses lineset parts 700570 or 700574. Specifications for 36,000 BTU Unit with two 18,000 BTU Indoor Units: Operating temperature range, cooling: 23çF to 115çF, heating: 5çF to 75çF. Rated capacity for each indoor unit is: 18,000 BTU cooling/19,000 BTU heating. SEER rating is 16. HSPF rating: 8. Voltage: single phase, 208-230 volt. Max Breaker Size: 30 Amp. Pipe Connections (2): 3/8 in and 1/2 in with up to a total of 225 ft in length. Part 700564 uses lineset parts 700566 or 700586. Refrigerant linesets are offered separately and should be installed by a qualified HVAC Technician.