The HVACR technician's role in indoor air quality is to: A) ...

[Beheh]

The HVACR technician's role in indoor air quality is to:
 
  A) Perform laboratory tests on collected material.
  B) Install HEPA filters to alleviate all indoor air-quality concerns.
  C) Communicate with the building owner and the occupants on how the interacting systems of a building affect indoor air quality.
  D) Perform microscopic analysis to determine the origin of pollutants.

Question 2

When does the temperature differential initiate the defrost cycle?
 
  A) When the air temperature drops below the coil temperature
  B) When the coil and air temperature difference increases for a prolonged period of time
  C) When the difference between the coil and outdoor air is constant
  D) When there is any frost on the coil

[Missbam101]

Answer to Question 1

C

Answer to Question 2

B

[Beheh]

Excellent

[komodo7]

Thanks for the timely response, appreciate it