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Heat Pump ESCO Questions & 100% Verified Answers | Latest Update | Already Graded A+
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An air-to-air heat pump has many of the same components as an air conditioning system. The major difference is that a heat pump also has an : Reversing valve What is the difference between "demand defrost" and "timed defrost"? : Demand defrost happens only when needed and timed defrost is base...
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