EPA 608 CERTIFICATION EXAM 75 QUESTIONS &
CORRECT ANSWERS LATEST 2025
How can you speed up the removal of the refrigerant charge from system? -
ANSWER-Cooling the recovery cylinder to lower its pressure.
How long must an HVAC servicing company keep records for each disposed
appliance with a charge between 5 and 50 lbs? - ANSWER-3 years (Both answers)
Recovered refrigerant may contain which of the following impurities? - ANSWER-
Acids, Moisture, and Oil
What area of a refrigeration system does oil foaming usually occur? - ANSWER-
Compressor
What is a deep vacuum usually measured in? - ANSWER-Microns
What is the primary water source for a water cooled recovery unit condensing
coil? - ANSWER-Local municipal water supply
What is the state of the refrigerant leaving the receiver in a refrigeration system?
- ANSWER-High pressure liquid
What should be done after reaching the required recovery vacuum on an
appliance? - ANSWER-Wait for at least a few minutes to see if the system
pressure rises.
, Which of the following CANNOT be used as a reason to extend the appliance
repair deadlines? - ANSWER-A certified service technician is not available.
Which of the following refrigerants would be used in a low-pressure appliance? -
ANSWER-R-123
Which of the following repairs would always be considered "major" under EPA's
regulations? - ANSWER-Replacement of an Evaporator Coil
Which of the following should be replaced if a system is opened for servicing? -
ANSWER-Filter Drier
Which of the following statements about recycling and recovery equipment used
for stationary refrigeration is FALSE? - ANSWER-Purchases of such equipment
must be reported to the EPA.
Your recovery/recycling machine has R-22 refrigerant in it. you now have to
recover refrigerant from an R-410a unit. What must be done before recovery? -
ANSWER-Remove the R-22 from the recovery unit and change filter.
Which refrigerant does NOT contain chlorine? - ANSWER-R-134a
Which refrigerant(s) must be recovered before opening or disposing of
appliances? - ANSWER-All three listed (HFC's, CFC's, HCFC's)
CORRECT ANSWERS LATEST 2025
How can you speed up the removal of the refrigerant charge from system? -
ANSWER-Cooling the recovery cylinder to lower its pressure.
How long must an HVAC servicing company keep records for each disposed
appliance with a charge between 5 and 50 lbs? - ANSWER-3 years (Both answers)
Recovered refrigerant may contain which of the following impurities? - ANSWER-
Acids, Moisture, and Oil
What area of a refrigeration system does oil foaming usually occur? - ANSWER-
Compressor
What is a deep vacuum usually measured in? - ANSWER-Microns
What is the primary water source for a water cooled recovery unit condensing
coil? - ANSWER-Local municipal water supply
What is the state of the refrigerant leaving the receiver in a refrigeration system?
- ANSWER-High pressure liquid
What should be done after reaching the required recovery vacuum on an
appliance? - ANSWER-Wait for at least a few minutes to see if the system
pressure rises.
, Which of the following CANNOT be used as a reason to extend the appliance
repair deadlines? - ANSWER-A certified service technician is not available.
Which of the following refrigerants would be used in a low-pressure appliance? -
ANSWER-R-123
Which of the following repairs would always be considered "major" under EPA's
regulations? - ANSWER-Replacement of an Evaporator Coil
Which of the following should be replaced if a system is opened for servicing? -
ANSWER-Filter Drier
Which of the following statements about recycling and recovery equipment used
for stationary refrigeration is FALSE? - ANSWER-Purchases of such equipment
must be reported to the EPA.
Your recovery/recycling machine has R-22 refrigerant in it. you now have to
recover refrigerant from an R-410a unit. What must be done before recovery? -
ANSWER-Remove the R-22 from the recovery unit and change filter.
Which refrigerant does NOT contain chlorine? - ANSWER-R-134a
Which refrigerant(s) must be recovered before opening or disposing of
appliances? - ANSWER-All three listed (HFC's, CFC's, HCFC's)
