Low GWP Exam Questions and
Answers (Latest Update 2026)
The min. concentration of a refrig that can propagate a flame
through consistent mixture of the refrig. and air is; -
correct answer ✅C - lower flammability limit (LFL).
2 - Refrigerant cylinders should be transported in the upright
position to ensure; -
correct answer ✅C - Pressure relief valve
3 - Tools used during the installation or service of systems charged
with a flammable refrigerant must be; -
correct answer ✅D - rated for use with flammable refrigerants
4 - The first stage of the evacuation process which removes non-
condensables from a system is called; -
correct answer ✅A - Degassing
5 - Once a flammable refrigerant has been recovered and stored in
a recovery cylinder; -
correct answer ✅B - Safe Distances
, Low GWP Exam Questions and
Answers (Latest Update 2026)
6 - In a vapor-compression refrigeration circuit the term
condensable is used to describe; -
correct answer ✅B - any gas that will not condense to a liquid
7 - Which of the following can affect the speed and efficiency of an
evacuation? -
correct answer ✅A - The capacity of the vacuum pump and hoses
being used.
8 - Which of the following refrigerants is exempt from the EPA's
recovery mandate? -
correct answer ✅B - R-290
Which one of the following refrigerants is classified as an A3
refrigerant? -
correct answer ✅B - R-290
10 - Atmospheric pressure (0 psig) is equal to approximately; -
correct answer ✅D - 760,000 Microns
11 - To avoid fractionation, blended refrigerants should be; -
correct answer ✅A - charged as a liquid
Answers (Latest Update 2026)
The min. concentration of a refrig that can propagate a flame
through consistent mixture of the refrig. and air is; -
correct answer ✅C - lower flammability limit (LFL).
2 - Refrigerant cylinders should be transported in the upright
position to ensure; -
correct answer ✅C - Pressure relief valve
3 - Tools used during the installation or service of systems charged
with a flammable refrigerant must be; -
correct answer ✅D - rated for use with flammable refrigerants
4 - The first stage of the evacuation process which removes non-
condensables from a system is called; -
correct answer ✅A - Degassing
5 - Once a flammable refrigerant has been recovered and stored in
a recovery cylinder; -
correct answer ✅B - Safe Distances
, Low GWP Exam Questions and
Answers (Latest Update 2026)
6 - In a vapor-compression refrigeration circuit the term
condensable is used to describe; -
correct answer ✅B - any gas that will not condense to a liquid
7 - Which of the following can affect the speed and efficiency of an
evacuation? -
correct answer ✅A - The capacity of the vacuum pump and hoses
being used.
8 - Which of the following refrigerants is exempt from the EPA's
recovery mandate? -
correct answer ✅B - R-290
Which one of the following refrigerants is classified as an A3
refrigerant? -
correct answer ✅B - R-290
10 - Atmospheric pressure (0 psig) is equal to approximately; -
correct answer ✅D - 760,000 Microns
11 - To avoid fractionation, blended refrigerants should be; -
correct answer ✅A - charged as a liquid
