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EPA Certification Exam Questions and Answers ( 2026/2027 Update)
EPA Certification Exam Questions and
Answers
( 2026/2027 Update)
Q: The Molecule found in the stratosphere that indicates stratospheric ozone depletion is taking
place is:
Answer:
Chlorine monoxide
Q: The following actions would violate the clean air act (CAA):
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
Q: One time (disposable) refrigerant cylinders are used for:
Answer:
Virgin refrigerant
Q: The rule of thumb for refilling approved cylinders is a maximum of _____ percent liquid?
Answer:
80%
Q: The time it takes to properly evacuate and dehydrate a system prior to charging with
refrigerant is determined by the:
Answer:
Total volume of the system
Amount of non-condensibles (moisture) in the system
Ambient Temperature
Q: A system that fails to hold a vacuum after the evacuation process:
Answer:
May contain moisture
May have a leak
Q: To recover refrigerant is to:
Answer:
Remove refrigerant is any condition from a system in either an active or passive manner, and
store it in an external container without necessarily testing or processing.
Q: The process that reduces contaminate in used refrigerant by oil separation with single and
multiple passes through devices such as replaceable filter core driers, which reduces moisture,
acidity, and particulate matter is:
Answer:
Recycling
Q: The synthetic lubricant used with HCFC-based ternary blends is:
Answer:
Alkyl benzene
Q: R-134a is "drop-in" refrigerant for:
Answer:
R-134a is not a Drop-in refrigerant
Q: The refrigerant condition and state entering the condenser of an air conditioner is a:
Answer:
Superheated Vapor
Q: The condition and state entering the condenser of an air conditioner is a:
Answer:
Subcooled liquid
Q: The component of an air conditioning system that changes a low pressure vapor to a high
pressure vapor is the:
Answer:
Compressor
Q: Refrigerant cylinders should be shipped
Answer:
In the vertical upright position
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