EPA Certification Exam 2026 Questions
and Answers
Which Refrigerants contain the most chlorine? - Correct answer-CFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2
refrigerants to the atmosphere? - Correct answer-July 1, 1992
Which Refrigerants have the lowest zone depletion potential? - Correct answer-
HFC's
The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in
the stratosphere is: - Correct answer-Chlorine
Stratospheric ozone consists of: - Correct answer-Three oxygen atoms
Stratospheric ozone depletion is a _________ problem: - Correct answer-Global
The Gas in the stratosphere that protects us from ultraviolet radiation is: - Correct
answer-Ozone
Which refrigerant is a CFC? - Correct answer-R-12
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, Which refrigerant is an HCFC? - Correct answer-R-123 & R-22
Which refrigerant is an HFC? - Correct answer-R-134a
Which refrigerant contains no chlorine? - Correct answer-R-134a
The Molecule found in the stratosphere that indicates stratospheric ozone depletion
is taking place is: - Correct answer-Chlorine monoxide
The following actions would violate the clean air act (CAA): - Correct answer-
Knowingly releasing Class 1 Class 2 substances
failing to keep or falsifying required records
failing to tech the required evacuation levels before opening a systems to the
atmosphere for service
One time (disposable) refrigerant cylinders are used for: - Correct answer-Virgin
refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent
liquid? - Correct answer-80%
The time it takes to properly evacuate and dehydrate a system prior to charging
with refrigerant is determined by the: - Correct answer-Total volume of the system
Amount of non-condensibles (moisture) in the system
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
and Answers
Which Refrigerants contain the most chlorine? - Correct answer-CFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2
refrigerants to the atmosphere? - Correct answer-July 1, 1992
Which Refrigerants have the lowest zone depletion potential? - Correct answer-
HFC's
The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in
the stratosphere is: - Correct answer-Chlorine
Stratospheric ozone consists of: - Correct answer-Three oxygen atoms
Stratospheric ozone depletion is a _________ problem: - Correct answer-Global
The Gas in the stratosphere that protects us from ultraviolet radiation is: - Correct
answer-Ozone
Which refrigerant is a CFC? - Correct answer-R-12
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Which refrigerant is an HCFC? - Correct answer-R-123 & R-22
Which refrigerant is an HFC? - Correct answer-R-134a
Which refrigerant contains no chlorine? - Correct answer-R-134a
The Molecule found in the stratosphere that indicates stratospheric ozone depletion
is taking place is: - Correct answer-Chlorine monoxide
The following actions would violate the clean air act (CAA): - Correct answer-
Knowingly releasing Class 1 Class 2 substances
failing to keep or falsifying required records
failing to tech the required evacuation levels before opening a systems to the
atmosphere for service
One time (disposable) refrigerant cylinders are used for: - Correct answer-Virgin
refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent
liquid? - Correct answer-80%
The time it takes to properly evacuate and dehydrate a system prior to charging
with refrigerant is determined by the: - Correct answer-Total volume of the system
Amount of non-condensibles (moisture) in the system
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
