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ESCO Heat Pump Exam - Questions with 100% Correct Answers
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ESCO Heat Pump Exam - Questions with 100% Correct Answers 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...
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