Mr. Slim Outdoor Heat Pumpby Mitsubishi Electric

    The Mr. Slim H2i P-Series outdoor heat pump offers a 36,000 BTU/h cooling and 38,000 BTU/h heating capacity and the maker's new Hyper-heating Inverter (H2i) technology, which incorporates higher compressor speeds at low temperatures and re-collects heat energy normally wasted in the flash process at the outdoor coil. As a result, the unit is highly efficient, operating at 100% of rated heating capacity at 5°F, 87% at -4°F, and 70% at -13°F, the maker says. 800.433.4822. www.mrslim.com.