... ; 2.environment protection; 3.CCC, ISO9001:2008 Xiangquanbao Household heat pump heater Model NumberPWH012A PWH015A PWH024ARated heating(Kw) 3.2824.366 ... friendly:There is no waste water, waste residue, used heat, the waste gas discharged. It willnot produce any pollution ... one or more units can be added to combine a heat water supply system, which are controlled by modular. Automatically ...