The 18000 BTU this Dual Zone INVERTER mini split AC with Susp. Ceiling Mounts can cool or heat TWO separate zones (9000 + 9000 BTU) for a total coverage area of 700 ft² (350 + 550 ft² areas). Unlike wall mounts, these Indoor Air Handlers offer the option of either being suspended from a ceiling or positioned standing on the floor. Inverter technology provides the benefits of low operation temps, rapid cooling / heating, as well as maximum energy efficiency. R410A Pre-charged - 2 X 25' Install kits Included.