16 SEER: 4 Ton Quad-Zone Ductless Mini Split AC - Heat Pump: With a 48000 BTU total Cooling / HEATING Capacity, this Quad Zone INVERTER mini split air conditioner can cool 4 separate zones (9000 + 9000 + 12000 + 18000) for a total coverage area of 2100 ft² (350 ft² + 350 ft² + 600 ft² + 900 ft² areas). 16 SEER cooupled with Advanced Inverter technology provides the benefits of low operation temps, rapid cooling / heating as well as maximum energy efficiency.