EPA Core Test Prep Exam REVIEW
WITH EXAM QUESTIONS AND CORRECT
SOLUTIONS A+ GRADED UPDATED
2025/2026 SYLLABUS!!!100%
GUARANTEED PASS!!<BRAND NEW
VERSION>
What characteristic of HFC refrigerants make them damaging to the environment?
- ANSWER ✓ They can have very high global warming potential
What is the state of the refrigerant entering the compressor of a refrigeration
system? - ANSWER ✓ Low pressure vapor
Which of the following is an HFC refrigerant? - ANSWER ✓ R-134a
Why are some hydrofluoroolefins (HFO) refrigerants classified as A2L? -
ANSWER ✓ They are less flammable than hydrocarbon refrigerants, but most are
still mildly flammable
Which type of refrigerant is the most harmful to stratospheric ozone? - ANSWER
✓ CFCS
What is the name of EPA's program that identifies refrigerants with lower overall
risk to human health and the environment? - ANSWER ✓ The Significant New
Alternatives Policy (SNAP) Program
As of 2017, how much can a technician be fined for violating the Clean Air Act,
including knowingly releasing non- exempt refrigerant from appliances? -
ANSWER ✓ $44,539 per day per violation
Recovery equipment that relies on the compressor in the appliance and/or the
pressure of the refrigerant in the appliance is considered: - ANSWER ✓ System-
dependent
, For an appliance that uses a CFC, HCFC or HFC refrigerant, which of the
following violates the prohibition on "venting? - ANSWER ✓ Refrigerants emitted
with cutting a line properly evacuating the appliance
What type of synthetic oil are commonly used in new HFC systems and for
retrofitting HCFC equipment to HFC refrigerants? - ANSWER ✓ Polyester
What can ester based oils be mixed with? - ANSWER ✓ No other oils
In which component of a system does the refrigerant change from a high- pressure
vapor to a high-pressure liquid? - ANSWER ✓ Condenser
Which of the following leak detection methods is considered to be the most
effective for locating the general area of a small leak? - ANSWER ✓ Electronic or
ultrasonic test
How many different refrigerants should be recovered into the same cylinder? -
ANSWER ✓ Only one
The piping connection to the vacuum pump should be; - ANSWER ✓ As short in
length and as large in diameter as possible
In most refrigerant accidents where death occurs, what is the major cause? -
ANSWER ✓ Oxygen deprivation
A refillable refrigerant cylinder must not be filled above what percent of its
capacity by weight: - ANSWER ✓ 80
How should refrigerant cylinders be positioned when they are shipped? -
ANSWER ✓ Upright
What does ozone in the stratosphere above the earth consist of? - ANSWER ✓
Molecules containing 3 oxygen atoms
Which element of a CFC or HCFC molecule causes ozone depletion? - ANSWER
✓ Chlorine
WITH EXAM QUESTIONS AND CORRECT
SOLUTIONS A+ GRADED UPDATED
2025/2026 SYLLABUS!!!100%
GUARANTEED PASS!!<BRAND NEW
VERSION>
What characteristic of HFC refrigerants make them damaging to the environment?
- ANSWER ✓ They can have very high global warming potential
What is the state of the refrigerant entering the compressor of a refrigeration
system? - ANSWER ✓ Low pressure vapor
Which of the following is an HFC refrigerant? - ANSWER ✓ R-134a
Why are some hydrofluoroolefins (HFO) refrigerants classified as A2L? -
ANSWER ✓ They are less flammable than hydrocarbon refrigerants, but most are
still mildly flammable
Which type of refrigerant is the most harmful to stratospheric ozone? - ANSWER
✓ CFCS
What is the name of EPA's program that identifies refrigerants with lower overall
risk to human health and the environment? - ANSWER ✓ The Significant New
Alternatives Policy (SNAP) Program
As of 2017, how much can a technician be fined for violating the Clean Air Act,
including knowingly releasing non- exempt refrigerant from appliances? -
ANSWER ✓ $44,539 per day per violation
Recovery equipment that relies on the compressor in the appliance and/or the
pressure of the refrigerant in the appliance is considered: - ANSWER ✓ System-
dependent
, For an appliance that uses a CFC, HCFC or HFC refrigerant, which of the
following violates the prohibition on "venting? - ANSWER ✓ Refrigerants emitted
with cutting a line properly evacuating the appliance
What type of synthetic oil are commonly used in new HFC systems and for
retrofitting HCFC equipment to HFC refrigerants? - ANSWER ✓ Polyester
What can ester based oils be mixed with? - ANSWER ✓ No other oils
In which component of a system does the refrigerant change from a high- pressure
vapor to a high-pressure liquid? - ANSWER ✓ Condenser
Which of the following leak detection methods is considered to be the most
effective for locating the general area of a small leak? - ANSWER ✓ Electronic or
ultrasonic test
How many different refrigerants should be recovered into the same cylinder? -
ANSWER ✓ Only one
The piping connection to the vacuum pump should be; - ANSWER ✓ As short in
length and as large in diameter as possible
In most refrigerant accidents where death occurs, what is the major cause? -
ANSWER ✓ Oxygen deprivation
A refillable refrigerant cylinder must not be filled above what percent of its
capacity by weight: - ANSWER ✓ 80
How should refrigerant cylinders be positioned when they are shipped? -
ANSWER ✓ Upright
What does ozone in the stratosphere above the earth consist of? - ANSWER ✓
Molecules containing 3 oxygen atoms
Which element of a CFC or HCFC molecule causes ozone depletion? - ANSWER
✓ Chlorine
