21 SEER: 4.5 Ton Quint-Zone Mini Split AC - Heat Pump: With a 45000 BTU total Cooling-Heating Capacity, this Inverter DC mini split system can cool or heat 5 seperate zones [400 ft² x 5] for a total coverage area of over 2000 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 .