The HMH7, 17+ SEER2 Modulating Heat Pumps are the newest offering in our successful LX Family of split system heat pumps. These units use a state of the art inverter driven compressor to precisely meet customers comfort requirements. Using a conventional heat pump thermostat, the system will automatically adjust capacity and airflow to meet the comfort requirements of the consumer, maximizing comfort while minimizing energy bills. Should the unit ever require service the main control and inverter control both provide system self-diagnostics.$$Information regarding compatibility kits for these Horizontal Discharge Modulating Heat Pumps: The S1-HMH7AK001 kit is required for standard ECM gas furnaces and air handling units. The S1-HMH7AK002 kit is required for premium variable speed gas furnaces and air handling units, with the exception of JHVT and JMVT models. The S1-BFD083S liquid line filter-drier is required if an S1-HMH7AK00* kit is not used.