- Study guides, Class notes & Summaries

Esco Heat pump exam 1. 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 a (an); - correct answersC: reversing valve. 2. What is the difference between "demand defrost" and "timed defrost?" - correct answersD: demand defrost only happens when needed, and time defrost is on timed temperature 3. The thermostat that controls the auxiliary electric heat according to the outdoor temperature is call...

Esco Heat pump exam 1. 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 a (an); - correct answersC: reversing valve. 2. What is the difference between "demand defrost" and "timed defrost?" - correct answersD: demand defrost only happens when needed, and time defrost is on timed temperature 3. The thermostat that controls the auxiliary electric heat according to the outdoor temperature is call...