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EPA Certification Exam Latest 2025 Actual Exam|
Complete 200 Real Exam Questions and Correct
Verified Answers/ Graded A+ (New!!)
Which agency has to approve refrigerant cylinders before they are
transported? - ANSWER - DOT
To prevent an explosion, never pressure test a system using - ANSWER
- oxygen.
A system is evacuated to 29.92" Hg and the pump is turned off. The
pressure increases and stops at 25" Hg. What can be said about the
system? - ANSWER - It has moisture or refrigerant present in the
system.
According to the EPA, a small appliance is - ANSWER - a system
containing 5 lb of refrigerant or less including PTACs.
Under conditions of ARI 740-1993, recovery devices manufactured
before November 15, 1993, must - ANSWER - be able to remove 80%
of the refrigerant charge or achieve 4" Hg vacuum.
When using a system-dependent (passive) recovery, the EPA requires -
ANSWER - 80% of the refrigerant to be removed if the compressor is
not operating.
pg. 1
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The pressure of an R-12 cylinder at 70 degrees F ambient temperature
will be - ANSWER - 70 psig
Which refrigerant must not be recovered with a current recovery
system? - ANSWER - R-717 ammonia
Which of the following refrigerant is considered a replacement for R-12
refrigerant? - ANSWER - R-134A
When pressurizing a system with nitrogen, it is required to have -
ANSWER - a pressure regulator and a relief valve.
After installing a piercing valve onto a system, - ANSWER - leak-test
the valve.
If refrigerants are exposed to open flames and hot surfaces, - ANSWER -
phosgene gas and hydrochloric hydrofluoric acids are produced.
What may cause a pungent odor in a CFC/HCFC system? - ANSWER -
a burnt compressor
Which of the following is required if a large amount of R-12 has been
released? - ANSWER - a self-contained breathing apparatus
At what temperature is R-22 when its pressure is 121 psig? - ANSWER -
70 degrees F
pg. 2
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At what pressure is R-502 when its temperature is 80 degrees F? -
ANSWER - 161 psig
Relief valves must never be installed - ANSWER - in series.
The color code for refrigerant recovery tanks is - ANSWER - yellow
tops with gray bottoms.
Type II technicians are certified to service - ANSWER - high-pressure
and very-high-pressure equipment, excluding small appliances and
motor vehicles.
After the installation of a refrigeration system, the technician should first
- ANSWER - pressure test the system using nitrogen.
What maintenance task must always be done to recover/recycle
equipment? - ANSWER - Change the system's oil and filters.
What type of leak detection device is used to pinpoint a leak? -
ANSWER - soap bubbles
An open compressor that has sat for several months is most likely -
ANSWER - to leak from the shaft seal.
Two indications that a high-pressure system has a leak are - ANSWER -
oil traces on flared fittings and high superheat.
pg. 3
EPA Certification Exam Latest 2025 Actual Exam|
Complete 200 Real Exam Questions and Correct
Verified Answers/ Graded A+ (New!!)
Which agency has to approve refrigerant cylinders before they are
transported? - ANSWER - DOT
To prevent an explosion, never pressure test a system using - ANSWER
- oxygen.
A system is evacuated to 29.92" Hg and the pump is turned off. The
pressure increases and stops at 25" Hg. What can be said about the
system? - ANSWER - It has moisture or refrigerant present in the
system.
According to the EPA, a small appliance is - ANSWER - a system
containing 5 lb of refrigerant or less including PTACs.
Under conditions of ARI 740-1993, recovery devices manufactured
before November 15, 1993, must - ANSWER - be able to remove 80%
of the refrigerant charge or achieve 4" Hg vacuum.
When using a system-dependent (passive) recovery, the EPA requires -
ANSWER - 80% of the refrigerant to be removed if the compressor is
not operating.
pg. 1
,2|Page
The pressure of an R-12 cylinder at 70 degrees F ambient temperature
will be - ANSWER - 70 psig
Which refrigerant must not be recovered with a current recovery
system? - ANSWER - R-717 ammonia
Which of the following refrigerant is considered a replacement for R-12
refrigerant? - ANSWER - R-134A
When pressurizing a system with nitrogen, it is required to have -
ANSWER - a pressure regulator and a relief valve.
After installing a piercing valve onto a system, - ANSWER - leak-test
the valve.
If refrigerants are exposed to open flames and hot surfaces, - ANSWER -
phosgene gas and hydrochloric hydrofluoric acids are produced.
What may cause a pungent odor in a CFC/HCFC system? - ANSWER -
a burnt compressor
Which of the following is required if a large amount of R-12 has been
released? - ANSWER - a self-contained breathing apparatus
At what temperature is R-22 when its pressure is 121 psig? - ANSWER -
70 degrees F
pg. 2
, 3|Page
At what pressure is R-502 when its temperature is 80 degrees F? -
ANSWER - 161 psig
Relief valves must never be installed - ANSWER - in series.
The color code for refrigerant recovery tanks is - ANSWER - yellow
tops with gray bottoms.
Type II technicians are certified to service - ANSWER - high-pressure
and very-high-pressure equipment, excluding small appliances and
motor vehicles.
After the installation of a refrigeration system, the technician should first
- ANSWER - pressure test the system using nitrogen.
What maintenance task must always be done to recover/recycle
equipment? - ANSWER - Change the system's oil and filters.
What type of leak detection device is used to pinpoint a leak? -
ANSWER - soap bubbles
An open compressor that has sat for several months is most likely -
ANSWER - to leak from the shaft seal.
Two indications that a high-pressure system has a leak are - ANSWER -
oil traces on flared fittings and high superheat.
pg. 3
