With advanced modulating technology, Luxaire® LX Series 16 SEER/9.0 HSPF Heat Pump provides quiet operation as it adjusts heating and cooling levels up or down to provide only what is actually needed to condition space. Powder painted steel coil guards protect against corrosion and coil damage, while balanced, direct-drive fan design minimizes vibration and sound. In colder weather, demand defrost feature minimizes heat pump operation, effectively removing frost on outdoor coil.