EPA 609 Certification Practice Questions,
HVAC Training, 2026 – Practice Questions
with Answers
R-134a is a chlorine-free refrigerant - correct answer -True
Ozone layer absorbs and scatters ________ from the sun - correct answer -ultraviolet
light
For determining the Ozone Depletion Potential ________ having been assigned a factor
of 1 - correct answer -CFC-11
A refillable refrigerant cylinder must not be filled above ______ of its full capacity. -
correct answer -80%
Ozone at ground level and at Stratosphere is a harmful pollutant - correct answer -False
Each chlorine ion can able to destroy ______ ozone molecules - correct answer -100,000
Lifetime of CFCs is believed to range from _____ years - correct answer -20-100
, An award of up to ______ may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting. - correct answer -$10,000
Ester-based synthetic oils can be mixed with other oils - correct answer -False
Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants - correct
answer -Nov 15, 1995
MVAC systems being disposed must be evacuated to _____ of mercury before being
scrapped - correct answer -4 inches
Since ________, it is no longer legal for CFCs to be manufactured or imported into the
United States - correct answer -Jan 1, 1996
The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent the
release of ozone depleting substances. - correct answer -1990
At high temperatures, CFC-12 can decompose to form _______ - correct answer -
hydrochloric and hydrofluoric acid
Ozone molecule consists of ______ atoms of oxygen - correct answer -three
CFCs are highly reactive in _____ of atmosphere - correct answer -lower
Non-condensables in a refrigeration system result in a _______ discharge pressure -
correct answer -higher
HVAC Training, 2026 – Practice Questions
with Answers
R-134a is a chlorine-free refrigerant - correct answer -True
Ozone layer absorbs and scatters ________ from the sun - correct answer -ultraviolet
light
For determining the Ozone Depletion Potential ________ having been assigned a factor
of 1 - correct answer -CFC-11
A refillable refrigerant cylinder must not be filled above ______ of its full capacity. -
correct answer -80%
Ozone at ground level and at Stratosphere is a harmful pollutant - correct answer -False
Each chlorine ion can able to destroy ______ ozone molecules - correct answer -100,000
Lifetime of CFCs is believed to range from _____ years - correct answer -20-100
, An award of up to ______ may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting. - correct answer -$10,000
Ester-based synthetic oils can be mixed with other oils - correct answer -False
Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants - correct
answer -Nov 15, 1995
MVAC systems being disposed must be evacuated to _____ of mercury before being
scrapped - correct answer -4 inches
Since ________, it is no longer legal for CFCs to be manufactured or imported into the
United States - correct answer -Jan 1, 1996
The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent the
release of ozone depleting substances. - correct answer -1990
At high temperatures, CFC-12 can decompose to form _______ - correct answer -
hydrochloric and hydrofluoric acid
Ozone molecule consists of ______ atoms of oxygen - correct answer -three
CFCs are highly reactive in _____ of atmosphere - correct answer -lower
Non-condensables in a refrigeration system result in a _______ discharge pressure -
correct answer -higher
