... CE, ISO,UKAS 4.it can work -25 degree Air source heat pump evaporator is at the top part of the heat ... to 35C.working mode: heating mode and cooling mode Air source heat pump MD200D Technical parameters:Rated input power:18.2kwheating capacity ... system:Multi-controlHeating,Ventilating and Air Conditioning.Heating and cooling for Hotel,Apartment,industral building. Air source heat pump 72 kw,HVAC system