SUNCHI DC inverter house heat pump supplies the most energy saving hot water for house heating and domestic use in winter, and cooled water for air conditioning in hot summer. Inverter Heat pumps are among the most economical ways to supply heating and cooling on air and water, which can reduce the electricity costs up to 70%. 9kw heat pump is much safer than the conventional way. Strong parts in building: Stable water flow switch, fully sealed control box with waterproof level IPX4, Intelligent controller and adjustment by the quick-mind microprocessor, carel digital control panel with remote wire LCD, air exchanger ( fin-coil ) with the hydrophilic coating.