MRCOOL 5 Zone 55K BTU (6K+6K+9K+12K+18K) 22 SEER2 Ductless Heat Pump DIY 5th GenControl five rooms independently with efficient zoning, quiet comfort, and an easy install that skips costly HVAC labor. The MRCOOL DIY Multi Zone 55,000 BTU Ductless Mini Split Air Conditioner and Heat Pump gives you flexible heating and cooling across five zoneswithout needing an HVAC contractor. With air handlers in two 6K units (200 sq ft each), one 9K unit (400sq ft), one 12K unit (550 sq ft), and one 18K unit (800 sq ft), this system is ideal