3. Theory.

Question 1

2. A refrigeration system that extracts heat from one substance and transfers it to another portion of the same substance or to a second substance at a higher temperature for a beneficial purpose?

Answer 1

Heat pump.

Question 2

3. Air provided to replace air being exhausted?

Answer 2

Makeup air.

Question 3

4. A chamber, other than the occupied space being conditioned or the ductwork, that forms part of the air-circulation system?

Answer 3

Plenum.

Question 4

5. What is HSPF?

Answer 4

Heating Season Performance Factor is the measure of a system’s efficiency in heating mode. The higher the number, the more efficient the system.

Question 5

1. The process of heating, cooling, humidifying, dehumidifying, filtering, or otherwise treating air in a building. Most non-trade persons relate this term to cooling only.

Answer 5

Air-conditioning.