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Author Question: New residential air conditioning systems now primarily use: A) HFC-134a. B) CFC-12. C) HFC-410A. ... (Read 121 times)

yoooooman

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on: Jul 26, 2018
New residential air conditioning systems now primarily use:
 
  A) HFC-134a. B) CFC-12. C) HFC-410A. D) HCFC-22.

Question 2

The standard industry number designation for each refrigerant is assigned by:
 
  A) RSES - Refrigeration Service Engineer's Society.
  B) ASHRAE - American Society of Heating Refrigeration and Air Conditioning Engineers.
  C) NIST - National Institute for Standards and Testing.
  D) AHRI - Air Conditioning Heating and Refrigeration Institute.


BUTTHOL369

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Reply #1 on: Jul 26, 2018
Answer to Question 1

C

Answer to Question 2

B


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