Air Source Heat Pump (ASHP), Inverter Heat Pump, Full Inverter Technology, DC Inverter, Reversible Heat Pump, Heat Exchanger, Energy Efficient Heating, Auxiliary Heating, Low-Energy Heater, COP (Coefficient of Performance), Heating and Cooling, Smart Heat Pump, Plug & Play Heat Pump, Geo-Thermal Heating, Ambient Air Heating, Retrofit Heat Pump.