... energy needs of the heat recovery unit that can produce free hot water in the cooling time.Easy to install * ... valve, is not sensitive to humidity trip, very low failure rate; * Screw compressor failure-free operation up to 40,000 hours. Characteristics of ... * Supporting the German and Swedish SKF FAG precision bearings; * Low vibration and low noise. * Compressor has been ISO9001, CRAA, CE, PED, UL ...