EPA Certification Exam 2026 Questions
and Answers
True or false: CFCs neither dissolve in water nor break down into compounds that
dissolve in water, so they do not rain out of the atmosphere. - Correct answer-True
How many ozone molecules will one chlorine atom destroy? - Correct answer-
100,000
What does ODP stand for? - Correct answer-ozone depletion potential
What is ODP? - Correct answer-the measurement of CFC's and HCFC's ability to
destroy ozone
Which refrigerant is the most harmful to the ozone layer? - Correct answer-R-12
CFC
The Clean Air Act prohibits venting of CFCs and HCFCs as of - Correct answer-
July 1, 1992
The Clean Air Act prohibits venting of HFCs as of - Correct answer-November 15,
1995
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,The Clean Air Act requires a service technician to be EPA certified as of - Correct
answer-November 14, 1994
When disposing of a refrigerant cylinder, - Correct answer-recover the refrigerant
and render the cylinder useless
When is it most likely that an appliance will need its refrigerant recovered? -
Correct answer-before it can be discarded
What is known as de minimis releases? - Correct answer-It is a minimum amount
of refrigerant that can be released to the atmosphere when servicing equipment.
What does the term temperature glide refer to? - Correct answer-the different
refrigerant boiling and condensing points of a blended refrigerant
Service technicians who violate the Clean Air Act - Correct answer-may be fined
and may lose certification.
How much of a fine can be issued for venting refrigerants? - Correct answer-
$27,500
An award of _____ is given to the person who supplies information about the
venting of refrigerants. - Correct answer-$10,000
What is fractionation - Correct answer-the separation of blended refrigerants
caused by different refrigerant vapor pressures
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, What is the pressure range of the high-side gauge that is located on a manifold set?
- Correct answer-0 psig to 500 psig
Which mixture is legal to add into a system for the purpose of leak testing? -
Correct answer-a trace amount of R-22 and nitrogen
Hygroscopic oil is oil that - Correct answer-has a high attraction to moisture.
What is the state of the refrigerant leaving the condenser? - Correct answer-high-
pressure liquid
What is the color code of refrigerant gauges? - Correct answer-low side is blue,
high side is red
Which is considered recycling? - Correct answer-removing, filtering, and reusing
refrigerant in a system
Refrigerant cylinders should be - Correct answer-free of rust as well as non-dented
and undamaged.
Which leak detector will help locate the general area of a system's leak? - Correct
answer-electronic/ultrasonic
What makes it impossible to reclaim a refrigerant? - Correct answer-having two
different refrigerants in one container
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
and Answers
True or false: CFCs neither dissolve in water nor break down into compounds that
dissolve in water, so they do not rain out of the atmosphere. - Correct answer-True
How many ozone molecules will one chlorine atom destroy? - Correct answer-
100,000
What does ODP stand for? - Correct answer-ozone depletion potential
What is ODP? - Correct answer-the measurement of CFC's and HCFC's ability to
destroy ozone
Which refrigerant is the most harmful to the ozone layer? - Correct answer-R-12
CFC
The Clean Air Act prohibits venting of CFCs and HCFCs as of - Correct answer-
July 1, 1992
The Clean Air Act prohibits venting of HFCs as of - Correct answer-November 15,
1995
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,The Clean Air Act requires a service technician to be EPA certified as of - Correct
answer-November 14, 1994
When disposing of a refrigerant cylinder, - Correct answer-recover the refrigerant
and render the cylinder useless
When is it most likely that an appliance will need its refrigerant recovered? -
Correct answer-before it can be discarded
What is known as de minimis releases? - Correct answer-It is a minimum amount
of refrigerant that can be released to the atmosphere when servicing equipment.
What does the term temperature glide refer to? - Correct answer-the different
refrigerant boiling and condensing points of a blended refrigerant
Service technicians who violate the Clean Air Act - Correct answer-may be fined
and may lose certification.
How much of a fine can be issued for venting refrigerants? - Correct answer-
$27,500
An award of _____ is given to the person who supplies information about the
venting of refrigerants. - Correct answer-$10,000
What is fractionation - Correct answer-the separation of blended refrigerants
caused by different refrigerant vapor pressures
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, What is the pressure range of the high-side gauge that is located on a manifold set?
- Correct answer-0 psig to 500 psig
Which mixture is legal to add into a system for the purpose of leak testing? -
Correct answer-a trace amount of R-22 and nitrogen
Hygroscopic oil is oil that - Correct answer-has a high attraction to moisture.
What is the state of the refrigerant leaving the condenser? - Correct answer-high-
pressure liquid
What is the color code of refrigerant gauges? - Correct answer-low side is blue,
high side is red
Which is considered recycling? - Correct answer-removing, filtering, and reusing
refrigerant in a system
Refrigerant cylinders should be - Correct answer-free of rust as well as non-dented
and undamaged.
Which leak detector will help locate the general area of a system's leak? - Correct
answer-electronic/ultrasonic
What makes it impossible to reclaim a refrigerant? - Correct answer-having two
different refrigerants in one container
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
