This system is meant to be installed by a HVAC technician. The MRCOOL Olympus is THE whole house mini-split solution. Up to 5 zones, the Olympus offers aesthetically pleasing wall mounted, and ceiling cassette units. If you don't like saving money this system is not for you, otherwise please enjoy keeping more money in your pocket every month with efficiency ratings up to 23 SEER and 10.3 HSPF. This 1.5 ton 18,000 BTU wall mounted air handler can be matched with any Olympus condenser to condition rooms that are approximately 750 sq ft.