EPA Certification Exam 2026 Questions
and Answers
An ----- should be taken and ----- if a system has a major component failure. -
Correct answer-oil sample
analyzed
(evacuation) The system vacuum gauge should be connected ----- from the vacuum
pump. - Correct answer-far as possible
To receive any certification, which section must be passed? - Correct answer-
Section A (core)
Always review the -----, when working with any solvents, chemicals, or
refrigerants - Correct answer-material safety data sheets
Cylinders should be transported in an ----- position - Correct answer-upright
What MUST be placed on a refrigerant cylinder being returned for reclaiming. -
Correct answer-A refrigerant label.
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,Use of a reciever and accumulator depends on - Correct answer-system design
and/or on the type of metering device used.
What regulation (and what start date) requires all persons be certified in proper
refrigerant handling techniques? - Correct answer-Section 608 of the Federal Clean
Act as of November 14, 1994.
What happens when CFC or HCFC molecules get in the stratosphere & free atoms
of Chlorine are set free? - Correct answer-These atoms attack Ozone Molecules
causing the formation of Chlorine Monoxide (CLO), after colliding with another
Ozone Molecule, causes 2 Oxygen (O2) molecules to be made & leaving an atom
of chlorine to act as "Free Agent" starting the process over until 100,000 molecules
of Ozone are destroyed by just one atom of chloride.
This is a closed book exam. What items may be brought with you to take the test? -
Correct answer-A temperature/pressure chart and a calculator
To recycle is to... - Correct answer-clean refrigerant for reuse by separating the oil
from the refrigerant and removing any moisture by passing it through one or more
filter driers.
Should relief valves be installed in series? - Correct answer-Never
Recover only ---- type of refrigerant into a recovery cylinder. - Correct answer-one
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,What is one of the most important tools to the HVACR technician? - Correct
answer-The gauge manifold set
Long hoses will cause excessive -----, increased -----, and have a potential for -----.
- Correct answer-pressure drop
recovery time
increased emissions
What are the two basic types of recovery devices? - Correct answer-Self-Contained
and System-Dependent.
Section II of the test covers what topics? - Correct answer-topics pertaining to
high-pressure appliances
Why in large quantities, do refrigerants cause suffocation? - Correct answer-
Because they are heavier than air and displace oxygen
What are 6 Type II appliances? - Correct answer-1.Walk-in coolers
2.Walk-in freezers
3.Reach-in refrigerators
4.Reach-in freezers
5.Residential & Commercial comfort cooling systems
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, 6.Ice machines
To justify the cost increases of service to a customer, simply explain that ----- and
required ---- to recover refrigerants in order to ----- and -----. - Correct answer-you
are bound
by law
protect the environment
human health
Once the general area of the leak is located the use of ----- will pinpoint the leak. -
Correct answer-soap bubbles
The most efficient method of leak checking a charged low-pressure system is to
use? - Correct answer-Controlled hot water or heater blankets.
It is important to remember that when leak testing an R-134A system, use -----. -
Correct answer-pressurized nitrogen.
Can Recycled refrigerant be resold? - Correct answer-It cannot be re-sold but it can
be re-used.
Universal technicians are certified to - Correct answer-maintain, service or repair
both low and high pressure equipment as well as small appliances
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
and Answers
An ----- should be taken and ----- if a system has a major component failure. -
Correct answer-oil sample
analyzed
(evacuation) The system vacuum gauge should be connected ----- from the vacuum
pump. - Correct answer-far as possible
To receive any certification, which section must be passed? - Correct answer-
Section A (core)
Always review the -----, when working with any solvents, chemicals, or
refrigerants - Correct answer-material safety data sheets
Cylinders should be transported in an ----- position - Correct answer-upright
What MUST be placed on a refrigerant cylinder being returned for reclaiming. -
Correct answer-A refrigerant label.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,Use of a reciever and accumulator depends on - Correct answer-system design
and/or on the type of metering device used.
What regulation (and what start date) requires all persons be certified in proper
refrigerant handling techniques? - Correct answer-Section 608 of the Federal Clean
Act as of November 14, 1994.
What happens when CFC or HCFC molecules get in the stratosphere & free atoms
of Chlorine are set free? - Correct answer-These atoms attack Ozone Molecules
causing the formation of Chlorine Monoxide (CLO), after colliding with another
Ozone Molecule, causes 2 Oxygen (O2) molecules to be made & leaving an atom
of chlorine to act as "Free Agent" starting the process over until 100,000 molecules
of Ozone are destroyed by just one atom of chloride.
This is a closed book exam. What items may be brought with you to take the test? -
Correct answer-A temperature/pressure chart and a calculator
To recycle is to... - Correct answer-clean refrigerant for reuse by separating the oil
from the refrigerant and removing any moisture by passing it through one or more
filter driers.
Should relief valves be installed in series? - Correct answer-Never
Recover only ---- type of refrigerant into a recovery cylinder. - Correct answer-one
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,What is one of the most important tools to the HVACR technician? - Correct
answer-The gauge manifold set
Long hoses will cause excessive -----, increased -----, and have a potential for -----.
- Correct answer-pressure drop
recovery time
increased emissions
What are the two basic types of recovery devices? - Correct answer-Self-Contained
and System-Dependent.
Section II of the test covers what topics? - Correct answer-topics pertaining to
high-pressure appliances
Why in large quantities, do refrigerants cause suffocation? - Correct answer-
Because they are heavier than air and displace oxygen
What are 6 Type II appliances? - Correct answer-1.Walk-in coolers
2.Walk-in freezers
3.Reach-in refrigerators
4.Reach-in freezers
5.Residential & Commercial comfort cooling systems
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, 6.Ice machines
To justify the cost increases of service to a customer, simply explain that ----- and
required ---- to recover refrigerants in order to ----- and -----. - Correct answer-you
are bound
by law
protect the environment
human health
Once the general area of the leak is located the use of ----- will pinpoint the leak. -
Correct answer-soap bubbles
The most efficient method of leak checking a charged low-pressure system is to
use? - Correct answer-Controlled hot water or heater blankets.
It is important to remember that when leak testing an R-134A system, use -----. -
Correct answer-pressurized nitrogen.
Can Recycled refrigerant be resold? - Correct answer-It cannot be re-sold but it can
be re-used.
Universal technicians are certified to - Correct answer-maintain, service or repair
both low and high pressure equipment as well as small appliances
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
