EPA SECTION 609 CERTIFICATION &
MVAC REFRIGERANT SAFETY EXAM
QUESTIONS AND ANSWERS 100% PASS
2026 UPDATE.
EPA Section 609 certification - ANS To legally service Motor Vehicle Air Conditioning (MVAC)
systems and purchase automotive refrigerant.
R-12 refrigerant phase-out reason - ANS It contributed to depletion of the earth's ozone
layer.
Global Warming Potential (GWP) of R-1234yf - ANS 4
Prohibited practice when servicing MVAC systems - ANS Intentionally venting refrigerant into
the atmosphere.
Minimum time required for A/C system operation with fluorescent dye for leak detection -
ANS 15 minutes.
Refrigerant that is mildly flammable and requires specific safety procedures - ANS
Safety equipment required when servicing MVAC systems - ANS Safety goggles with side
shields and insulated gloves.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is cross contamination in MVAC systems ? - ANS Having refrigerant other than the type
designated on the system information label
How often should refrigerant handling equipment be calibrated ? - ANS According to
manufacturer's specifications
What percentage of its gross weight capacity should a refrigerant storage tank never exceed ? -
ANS 60 %
When checking for evaporator leaks using an electronic detector , how long should you wait
after turning off the blower ? - ANS 13 minutes
What is the proper procedure if contaminated refrigerant is detected ? - ANS Dispose of it
properly through EPA - certified facilities
Which document contains essential safety information about refrigerants ? - ANS Safety Data
Sheet ( SDS )
What is the minimum vacuum level required for R - 1234yf systems before recharging ? -
ANS 0.011 MPa A ( 3.32 in . Hg absolute )
How should refrigerant cylinders be stored ? - ANS Below 52 degrees C ( 125 degrees F )
What percentage of the total charge does a R - 1234yf system receive initially during automated
charging ? - ANS 15 %
What is the proper procedure if a leak is detected during system charging ? - ANS Locate and
repair the leak before continuing
Which standard applies to R - 1234yf recovery / recycling / recharging equipment ? - ANS SAE
J2843
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
MVAC REFRIGERANT SAFETY EXAM
QUESTIONS AND ANSWERS 100% PASS
2026 UPDATE.
EPA Section 609 certification - ANS To legally service Motor Vehicle Air Conditioning (MVAC)
systems and purchase automotive refrigerant.
R-12 refrigerant phase-out reason - ANS It contributed to depletion of the earth's ozone
layer.
Global Warming Potential (GWP) of R-1234yf - ANS 4
Prohibited practice when servicing MVAC systems - ANS Intentionally venting refrigerant into
the atmosphere.
Minimum time required for A/C system operation with fluorescent dye for leak detection -
ANS 15 minutes.
Refrigerant that is mildly flammable and requires specific safety procedures - ANS
Safety equipment required when servicing MVAC systems - ANS Safety goggles with side
shields and insulated gloves.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is cross contamination in MVAC systems ? - ANS Having refrigerant other than the type
designated on the system information label
How often should refrigerant handling equipment be calibrated ? - ANS According to
manufacturer's specifications
What percentage of its gross weight capacity should a refrigerant storage tank never exceed ? -
ANS 60 %
When checking for evaporator leaks using an electronic detector , how long should you wait
after turning off the blower ? - ANS 13 minutes
What is the proper procedure if contaminated refrigerant is detected ? - ANS Dispose of it
properly through EPA - certified facilities
Which document contains essential safety information about refrigerants ? - ANS Safety Data
Sheet ( SDS )
What is the minimum vacuum level required for R - 1234yf systems before recharging ? -
ANS 0.011 MPa A ( 3.32 in . Hg absolute )
How should refrigerant cylinders be stored ? - ANS Below 52 degrees C ( 125 degrees F )
What percentage of the total charge does a R - 1234yf system receive initially during automated
charging ? - ANS 15 %
What is the proper procedure if a leak is detected during system charging ? - ANS Locate and
repair the leak before continuing
Which standard applies to R - 1234yf recovery / recycling / recharging equipment ? - ANS SAE
J2843
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
