The MRCOOL UHP18048-O Universal Series Inverter Heat Pump Condenser is an outdoor HVAC unit designed for use with compatible split-system air handlers and heat pump systems. It operates by utilizing inverter-driven compressor technology to transfer heat efficiently, providing dependable heating in colder months and cooling during warmer seasons. https://www.partshnc.com/mrcool-universal-series-heat-pump-inverter-condenser-uhp18048-ouni-5-hp