20 SEER: 3 Ton Dual-Zone Mini Split AC - Heat Pump: With a 36000 BTU total Cooling / HEATING Capacity, this Dual Zone INVERTER mini split air conditioner can cool or heat 2 separate 18000 BTU zones for a total coverage area of 1600 ft² (TWO 800 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 5 Year Compressor - 2 Year Parts Warranty.