... Heat Pump -R134a,R407c Available -CE Certificate for Europe LTWH(R) Series Residence Geothermal Ground Source Heat Pump Introduction:Ground ... heat resouces2.Close Loop with Domestic Hot Water SystemMODELS: LTWH(R)-020---LTWH(R)-100Heating Capacity: 8.6-41KW; Cooling Capacity: ... be added for free sanitary hot water. Model No. LTWH(R)—020025030035040050060065075090100Heating Capacity(KW)8.610.212.014.717. ...