TEXAS REFRIGERANT HANDLING
CERTIFICATION EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. A technician is preparing to recover refrigerant from a commercial
refrigeration system containing R-404A. According to EPA
regulations, what is the primary reason refrigerant recovery is
required before opening the system?
A. To increase compressor efficiency
B. To prevent atmospheric release of refrigerant
C. To improve oil circulation
D. To reduce condenser pressure
Answer: B. To prevent atmospheric release of refrigerant
Rationale: Federal regulations require refrigerants to be recovered
before servicing to prevent ozone depletion and reduce greenhouse gas
emissions. Venting regulated refrigerants into the atmosphere is
prohibited except for specifically exempt substitutes.
2. Which refrigerant has an Ozone Depletion Potential (ODP) equal
to zero?
A. R-11
B. R-12
C. R-22
D. R-134a
Answer: D. R-134a
1
,Rationale: R-134a is an HFC refrigerant containing no chlorine, giving
it an ODP of zero, although it still possesses significant Global
Warming Potential (GWP).
3. A recovery cylinder should never be filled beyond what percentage
of its water capacity?
A. 70%
B. 80%
C. 90%
D. 100%
Answer: B. 80%
Rationale: Recovery cylinders require vapor space to allow refrigerant
expansion during temperature increases. Filling beyond 80% risks
dangerous pressure increases.
4. What color identifies the shoulder of a recovery cylinder under
traditional refrigerant cylinder markings?
A. Green
B. Gray with yellow top
C. Yellow
D. Blue
Answer: C. Yellow
Rationale: Recovery cylinders are traditionally identified by a yellow
body and shoulder. Although color coding is no longer mandatory for
refrigerant identification, recovery cylinders commonly remain yellow.
5. Which refrigerant classification indicates low toxicity and no flame
propagation?
A. A1
B. A2L
2
,C. B2
D. B3
Answer: A. A1
Rationale: ASHRAE safety classification A1 identifies refrigerants with
lower toxicity and no flame propagation under prescribed test
conditions.
6. Which instrument should always be used to verify that refrigerant
recovery has been completed?
A. Thermometer
B. Digital scale
C. Vacuum gauge
D. Pressure gauge meeting EPA requirements
Answer: D. Pressure gauge meeting EPA requirements
Rationale: Pressure readings verify whether the required evacuation
level has been reached before opening or disposing of equipment.
7. Which refrigerant is classified as mildly flammable?
A. R-410A
B. R-1234yf
C. R-134a
D. R-404A
Answer: B. R-1234yf
Rationale: R-1234yf belongs to the A2L safety classification, indicating
low toxicity and mild flammability.
8. What is the first action before connecting recovery equipment?
A. Start the recovery machine
B. Inspect hoses and equipment for damage
3
, C. Open all valves fully
D. Remove compressor oil
Answer: B. Inspect hoses and equipment for damage
Rationale: Damaged hoses, fittings, or gauges may leak refrigerant or
create unsafe working conditions.
9. Why should refrigerant cylinders never be heated with an open
flame?
A. Refrigerant pressure decreases
B. Cylinders may rupture violently
C. Refrigerant freezes
D. Compressor damage occurs
Answer: B. Cylinders may rupture violently
Rationale: Excessive heating dramatically increases internal pressure,
creating explosion hazards.
10. Moisture entering a refrigeration system primarily causes:
A. Increased cooling capacity
B. Acid formation and ice blockage
C. Reduced compressor temperature
D. Lower discharge pressure
Answer: B. Acid formation and ice blockage
Rationale: Moisture reacts with refrigerant and oil to form acids while
freezing at metering devices, restricting refrigerant flow.
11. Which component removes moisture from refrigerant?
A. Compressor
B. Filter-drier
C. Receiver
D. Accumulator
4
CERTIFICATION EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. A technician is preparing to recover refrigerant from a commercial
refrigeration system containing R-404A. According to EPA
regulations, what is the primary reason refrigerant recovery is
required before opening the system?
A. To increase compressor efficiency
B. To prevent atmospheric release of refrigerant
C. To improve oil circulation
D. To reduce condenser pressure
Answer: B. To prevent atmospheric release of refrigerant
Rationale: Federal regulations require refrigerants to be recovered
before servicing to prevent ozone depletion and reduce greenhouse gas
emissions. Venting regulated refrigerants into the atmosphere is
prohibited except for specifically exempt substitutes.
2. Which refrigerant has an Ozone Depletion Potential (ODP) equal
to zero?
A. R-11
B. R-12
C. R-22
D. R-134a
Answer: D. R-134a
1
,Rationale: R-134a is an HFC refrigerant containing no chlorine, giving
it an ODP of zero, although it still possesses significant Global
Warming Potential (GWP).
3. A recovery cylinder should never be filled beyond what percentage
of its water capacity?
A. 70%
B. 80%
C. 90%
D. 100%
Answer: B. 80%
Rationale: Recovery cylinders require vapor space to allow refrigerant
expansion during temperature increases. Filling beyond 80% risks
dangerous pressure increases.
4. What color identifies the shoulder of a recovery cylinder under
traditional refrigerant cylinder markings?
A. Green
B. Gray with yellow top
C. Yellow
D. Blue
Answer: C. Yellow
Rationale: Recovery cylinders are traditionally identified by a yellow
body and shoulder. Although color coding is no longer mandatory for
refrigerant identification, recovery cylinders commonly remain yellow.
5. Which refrigerant classification indicates low toxicity and no flame
propagation?
A. A1
B. A2L
2
,C. B2
D. B3
Answer: A. A1
Rationale: ASHRAE safety classification A1 identifies refrigerants with
lower toxicity and no flame propagation under prescribed test
conditions.
6. Which instrument should always be used to verify that refrigerant
recovery has been completed?
A. Thermometer
B. Digital scale
C. Vacuum gauge
D. Pressure gauge meeting EPA requirements
Answer: D. Pressure gauge meeting EPA requirements
Rationale: Pressure readings verify whether the required evacuation
level has been reached before opening or disposing of equipment.
7. Which refrigerant is classified as mildly flammable?
A. R-410A
B. R-1234yf
C. R-134a
D. R-404A
Answer: B. R-1234yf
Rationale: R-1234yf belongs to the A2L safety classification, indicating
low toxicity and mild flammability.
8. What is the first action before connecting recovery equipment?
A. Start the recovery machine
B. Inspect hoses and equipment for damage
3
, C. Open all valves fully
D. Remove compressor oil
Answer: B. Inspect hoses and equipment for damage
Rationale: Damaged hoses, fittings, or gauges may leak refrigerant or
create unsafe working conditions.
9. Why should refrigerant cylinders never be heated with an open
flame?
A. Refrigerant pressure decreases
B. Cylinders may rupture violently
C. Refrigerant freezes
D. Compressor damage occurs
Answer: B. Cylinders may rupture violently
Rationale: Excessive heating dramatically increases internal pressure,
creating explosion hazards.
10. Moisture entering a refrigeration system primarily causes:
A. Increased cooling capacity
B. Acid formation and ice blockage
C. Reduced compressor temperature
D. Lower discharge pressure
Answer: B. Acid formation and ice blockage
Rationale: Moisture reacts with refrigerant and oil to form acids while
freezing at metering devices, restricting refrigerant flow.
11. Which component removes moisture from refrigerant?
A. Compressor
B. Filter-drier
C. Receiver
D. Accumulator
4
