21 SEER: 3 Ton Quad-Zone Mini Split AC - Heat Pump: With a 36000 BTU total Cooling-Heating Capacity, this Inverter DC mini split system can cool or heat 4 seperate zones [400 + 400 + 400 + 400 ft²] for a total coverage area of 1600 ft². A 21 SEER rating coupled with Inverter technology provides the benefits of low operation temps, rapid cooling as well as maximum energy efficiency. Comes pre-charged with R410A; Includes LCD remotes.