20 SEER: 3 Ton Tri-Zone Mini Split Ceiling Cassette AC - Heat Pump: With a 36000 BTU total Cooling / HEATING Capacity, this Tri Zone INVERTER mini split air conditioner can cool or heat 3 separate 12000 BTU zones for a total coverage area of 1650 ft² (THREE 550 ft² areas* ). 20 SEER coupled with Advanced Inverter DC technology provides the benefits of low operation temps, rapid cooling / heating as well as maximum energy efficiency. Full 7 Year Compressor - 5 Year Part Warranty Included.