Built for rooms up to 550 sq ft, the MRCOOL® 12K BTU system delivers the perfect balance of power, efficiency, and quiet operation. Whether installed as a wall-mounted unit or a sleek OuttaSight® ceiling cassette, it provides year-round heating and cooling, smart-home control, and MRCOOL’s signature DIY-friendly installation. It’s the ideal choice for bedrooms, living areas, garden rooms, and medium-sized spaces.