... Air to Water Heat Pump *3.5~28KW,DHW,heating,cooling *High COP, reliable system,good reputation *CE&RoHS Multifunctional Air to ... air source heat pumps offer an energy-efficient alternative to furnaces and air conditioners. Because they move heat rather ... defrosting,the average heating capacity reduces about 10% compare to corresponding data)[2]Surrounding air temperature/outlet water temperature ...