Heat or cool up to five rooms with the MRCOOL DIY Multi-Zone 48,000 BTU 21.8 SEER2 5 Zone Ductless Heat Pump Split System - 9K + 9K + 9K + 9K + 9K. This DIY Series multi-zone product features easy installation that requires no special tools or training. You'll save thousands of dollars on installation and you can get the amazing air comfort of your dreams due to the condenser’s 48,000 BTU capacity. The five indoor air handlers are all 9,000 btu (400 square feet). A heat pump by design, this ductless HVAC solution can run in reverse and pull in heat from the outdoors when in a heating mode. It comes with a 7 Year Compressor (Plus a limited lifetime compressor warranty), 5 Year Parts Manufacturer Warranty!