1|Page
EPA Section 609 Certification Exam 2025 | MVAC
Technician Study Guide, Practice Test, and Answers
Prepare for the EPA Section 609 Certification Exam 2025 with this complete study guide.
Covers refrigerant recovery and recycling, environmental regulations, system servicing
procedures, safety practices, and compliance standards for motor vehicle air conditioning
(MVAC) technicians. Includes practice questions and detailed answer explanations.
• EPA Section 609 certification exam 2025
• EPA 609 practice test and answers
• Section 609 MVAC technician certification
• EPA 609 online exam 2025
Technicians who repair or service HFC-134a MVACs must be trained and certified by an EPA-approved
organization - ANSWER-True
Moisture content in recycled R-134a (HFC-134a) that has been directly removed from and intended to be
returned to a mobile air-conditioning system cannot exceed _______ by weight - ANSWER-50 PPM
R-134a disposable refrigerant cylinder is ________ color coded: - ANSWER-light blue
Disposable cylinders are manufactured to specifications established by: - ANSWER-DOT
Which of the following refrigerant has a molecular formula is C2H4F2: - ANSWER-R-152a
The AHRI standard now contains the new specification to limit unsaturated impurities in HFC-134a to a
maximum level of ________ - ANSWER-40 ppm
,2|Page
Refrigerants may be mixed in recovery cylinders: - ANSWER-False
Ultraviolet radiation breaks down the CFCs and frees the chlorine ion - ANSWER-True
At present there is no restriction on the sale of HFC-134a - ANSWER-True
Hydrofluorocarbons (HFCs) contributes to which of the following: - ANSWER-global warming
The thermodynamic properties of HFC-134a are similar to CFC-12 - ANSWER-True
The "ozone layer" consists of ozone in which part of the atmosphere: - ANSWER-stratosphere
As per the CAA, all records related to entities of MVAC system services must be maintained for ________
years - ANSWER-3
_______ has replaced CFC-12 in all automotive applications - ANSWER-HFC-134a
The primary cause of over-pressurization of refrigeration cylinder is due to overheating - ANSWER-True
The color code for R-12 disposable refrigerant cylinders is ______ - ANSWER-white
Since _______, it has been mandatory to recycle HFC-134a as well as any other automotive refrigerant
before returning to that MVAC or sold: - ANSWER-Jan 29, 1998
Halons were completely phased out by 1994 - ANSWER-True
R-134a is flammable at ambient temperatures and atmospheric pressures - ANSWER-False
, 3|Page
Since ______, it has been illegal to vent substitutes for CFC 3. and HCFC refrigerants: - ANSWER-Nov 15,
1995
Which of the following will not react with ozone gas: - ANSWER-Fluorine
Montreal Protocol is signed in ______ by 23 counties including USA - ANSWER-Sep 1987
The sale of small containers of refrigerant under _______, including the one pound cans, are restricted
to only people certified in Section 609 - ANSWER-20 lb
Disposable cylinders are manufactured from: - ANSWER-steel
HFC-134a refrigerant has an Ozone Depletion Potential of: - ANSWER-0.0
Ozone layer is present in both Stratosphere and mesosphere layers of earth's atmosphere: - ANSWER-
False
R-134a refrigerant has low solubility in non-polar lubricants - ANSWER-True
Average ozone concentration in Earth's atmosphere as a whole is only about ______ parts per million -
ANSWER-0.3
Use of Carbon dioxide (R-744) refrigerant results into a ______ efficiency cycle: - ANSWER-much lower
Recovery cylinders are painted yellow in the shoulder area and _____ down the side - ANSWER-12
inches
EPA Section 609 Certification Exam 2025 | MVAC
Technician Study Guide, Practice Test, and Answers
Prepare for the EPA Section 609 Certification Exam 2025 with this complete study guide.
Covers refrigerant recovery and recycling, environmental regulations, system servicing
procedures, safety practices, and compliance standards for motor vehicle air conditioning
(MVAC) technicians. Includes practice questions and detailed answer explanations.
• EPA Section 609 certification exam 2025
• EPA 609 practice test and answers
• Section 609 MVAC technician certification
• EPA 609 online exam 2025
Technicians who repair or service HFC-134a MVACs must be trained and certified by an EPA-approved
organization - ANSWER-True
Moisture content in recycled R-134a (HFC-134a) that has been directly removed from and intended to be
returned to a mobile air-conditioning system cannot exceed _______ by weight - ANSWER-50 PPM
R-134a disposable refrigerant cylinder is ________ color coded: - ANSWER-light blue
Disposable cylinders are manufactured to specifications established by: - ANSWER-DOT
Which of the following refrigerant has a molecular formula is C2H4F2: - ANSWER-R-152a
The AHRI standard now contains the new specification to limit unsaturated impurities in HFC-134a to a
maximum level of ________ - ANSWER-40 ppm
,2|Page
Refrigerants may be mixed in recovery cylinders: - ANSWER-False
Ultraviolet radiation breaks down the CFCs and frees the chlorine ion - ANSWER-True
At present there is no restriction on the sale of HFC-134a - ANSWER-True
Hydrofluorocarbons (HFCs) contributes to which of the following: - ANSWER-global warming
The thermodynamic properties of HFC-134a are similar to CFC-12 - ANSWER-True
The "ozone layer" consists of ozone in which part of the atmosphere: - ANSWER-stratosphere
As per the CAA, all records related to entities of MVAC system services must be maintained for ________
years - ANSWER-3
_______ has replaced CFC-12 in all automotive applications - ANSWER-HFC-134a
The primary cause of over-pressurization of refrigeration cylinder is due to overheating - ANSWER-True
The color code for R-12 disposable refrigerant cylinders is ______ - ANSWER-white
Since _______, it has been mandatory to recycle HFC-134a as well as any other automotive refrigerant
before returning to that MVAC or sold: - ANSWER-Jan 29, 1998
Halons were completely phased out by 1994 - ANSWER-True
R-134a is flammable at ambient temperatures and atmospheric pressures - ANSWER-False
, 3|Page
Since ______, it has been illegal to vent substitutes for CFC 3. and HCFC refrigerants: - ANSWER-Nov 15,
1995
Which of the following will not react with ozone gas: - ANSWER-Fluorine
Montreal Protocol is signed in ______ by 23 counties including USA - ANSWER-Sep 1987
The sale of small containers of refrigerant under _______, including the one pound cans, are restricted
to only people certified in Section 609 - ANSWER-20 lb
Disposable cylinders are manufactured from: - ANSWER-steel
HFC-134a refrigerant has an Ozone Depletion Potential of: - ANSWER-0.0
Ozone layer is present in both Stratosphere and mesosphere layers of earth's atmosphere: - ANSWER-
False
R-134a refrigerant has low solubility in non-polar lubricants - ANSWER-True
Average ozone concentration in Earth's atmosphere as a whole is only about ______ parts per million -
ANSWER-0.3
Use of Carbon dioxide (R-744) refrigerant results into a ______ efficiency cycle: - ANSWER-much lower
Recovery cylinders are painted yellow in the shoulder area and _____ down the side - ANSWER-12
inches
