Degaulle swimming pool heater collect from air by 20℃ below the refrigerant and compress heat into high temperature and high pressure refrigerant,and then passed through the heat transfer to the need to be heated water or other media, electricity is the transport of porters, so that the heat pump efficiency (COP) reaches 400-500%.Compare with 90% of heat from electricity, 60% of heat from natural gas and fuel, 35% of heat from coal, heat pump are even more energy efficient than solar energy. So swimming pool heat pump unit is more environmentally friendly and energy saving heater. Degaulle swimming pool dedicated heat pump with the most safety heating method which the water and electricity is separated completely,the electric is only as an auxiliary drive which do not heating the pool directly, so that is no exit the risk of electric shock in the pool, which improve the safety of swimmers and staff greatly.