Along with balanced direct-drive fan design that minimizes vibration and sound, Coleman® LX Series 16 SEER/9.0 HSPF heat pump uses modulating technology that contributes to even temperatures and minimized operating expense. Heating/cooling provides only what is actually needed to condition space, and reduced compressor speed and airflow also improves dehumidification. In colder weather, demand defrost feature minimizes heat pump operation to efficiently remove frost on outdoor coil.