This type is ground source heat pump absorb energy from underground and then transfer it into warm water .So the house could be warmed up by pumping the warm water to underfloor heating pipe system or radiators.
1. Famous water pumps inside, which ensures an easier installation and less space taken.
2.High efficiency compressor with R410a refrigerant.
3.Water flow switch equipped for water flow protection
4.Careful protection functions such as: high pressure, low pressure, and over-heating, overload anti-freezing, phase order, discharge temp .etc.