EPA 609 LATEST 2026 EXAM QUESTIONS AND ANSWERS
GRADED A+
✔✔The color code for R-12 disposable refrigerant cylinders is ______ - ✔✔white
✔✔Since _______, it has been mandatory to recycle HFC-134a as well as any other
automotive refrigerant before returning to that MVAC or sold: - ✔✔Jan 29, 1998
✔✔Halons were completely phased out by 1994 - ✔✔True
✔✔R-134a is flammable at ambient temperatures and atmospheric pressures -
✔✔False
✔✔Since ______, it has been illegal to vent substitutes for CFC 3. and HCFC
refrigerants: - ✔✔Nov 15, 1995
✔✔Which of the following will not react with ozone gas: - ✔✔Fluorine
✔✔Montreal Protocol is signed in ______ by 23 counties including USA - ✔✔Sep 1987
✔✔The sale of small containers of refrigerant under _______, including the one pound
cans, are restricted to only people certified in Section 609 - ✔✔20 lb
✔✔Disposable cylinders are manufactured from: - ✔✔steel
✔✔HFC-134a refrigerant has an Ozone Depletion Potential of: - ✔✔0.0
✔✔Ozone layer is present in both Stratosphere and mesosphere layers of earth's
atmosphere: - ✔✔False
✔✔R-134a refrigerant has low solubility in non-polar lubricants - ✔✔True
✔✔Average ozone concentration in Earth's atmosphere as a whole is only about
______ parts per million - ✔✔0.3
✔✔Use of Carbon dioxide (R-744) refrigerant results into a ______ efficiency cycle: -
✔✔much lower
✔✔Recovery cylinders are painted yellow in the shoulder area and _____ down the side
- ✔✔12 inches
, ✔✔Technicians who repair or service HFC-134a MVACs must be trained and certified
by an EPA-approved organization - ✔✔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 - ✔✔50 PPM
✔✔R-134a disposable refrigerant cylinder is ________ color coded: - ✔✔light blue
✔✔Disposable cylinders are manufactured to specifications established by: - ✔✔DOT
✔✔Which of the following refrigerant has a molecular formula is C2H4F2: - ✔✔R-152a
✔✔The AHRI standard now contains the new specification to limit unsaturated
impurities in HFC-134a to a maximum level of ________ - ✔✔40 ppm
✔✔Refrigerants may be mixed in recovery cylinders: - ✔✔False
✔✔After reaching the required recovery vacuum on an system, if the system pressure
_____, indicating that there is either refrigerant in liquid form, refrigerant trapped in the
oil, or a leak in the system. - ✔✔rises
✔✔Refrigeration cylinders must be re-tested at ______ intervals - ✔✔five-year
✔✔Ozone in the Earth's stratosphere is created by UV light striking _____ molecule -
✔✔Oxygen
✔✔R- 134a is a corrosive refrigerant: - ✔✔False
✔✔Persons servicing MVACs do not have this choice they must be certified as _______
MVAC technicians if they perform the AC service for compensation. - ✔✔Section 609
✔✔With the rising cost of refrigerant, the value of the refrigerant stored in a 50-lb.
recovery tank is worth _______ the cost of a recovery tank - ✔✔five times
✔✔On _______, the U.S. EPA enacted the provisions of this agreement into regulations
for the United States - ✔✔Aug 1, 1988
✔✔Used cylinders can be recycled with other scrap metal - ✔✔True
✔✔One chlorine or bromine radical liberated has the capability to act as catalyst and
breakdown _____ number of ozone molecules in stratosphere: - ✔✔100,000
GRADED A+
✔✔The color code for R-12 disposable refrigerant cylinders is ______ - ✔✔white
✔✔Since _______, it has been mandatory to recycle HFC-134a as well as any other
automotive refrigerant before returning to that MVAC or sold: - ✔✔Jan 29, 1998
✔✔Halons were completely phased out by 1994 - ✔✔True
✔✔R-134a is flammable at ambient temperatures and atmospheric pressures -
✔✔False
✔✔Since ______, it has been illegal to vent substitutes for CFC 3. and HCFC
refrigerants: - ✔✔Nov 15, 1995
✔✔Which of the following will not react with ozone gas: - ✔✔Fluorine
✔✔Montreal Protocol is signed in ______ by 23 counties including USA - ✔✔Sep 1987
✔✔The sale of small containers of refrigerant under _______, including the one pound
cans, are restricted to only people certified in Section 609 - ✔✔20 lb
✔✔Disposable cylinders are manufactured from: - ✔✔steel
✔✔HFC-134a refrigerant has an Ozone Depletion Potential of: - ✔✔0.0
✔✔Ozone layer is present in both Stratosphere and mesosphere layers of earth's
atmosphere: - ✔✔False
✔✔R-134a refrigerant has low solubility in non-polar lubricants - ✔✔True
✔✔Average ozone concentration in Earth's atmosphere as a whole is only about
______ parts per million - ✔✔0.3
✔✔Use of Carbon dioxide (R-744) refrigerant results into a ______ efficiency cycle: -
✔✔much lower
✔✔Recovery cylinders are painted yellow in the shoulder area and _____ down the side
- ✔✔12 inches
, ✔✔Technicians who repair or service HFC-134a MVACs must be trained and certified
by an EPA-approved organization - ✔✔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 - ✔✔50 PPM
✔✔R-134a disposable refrigerant cylinder is ________ color coded: - ✔✔light blue
✔✔Disposable cylinders are manufactured to specifications established by: - ✔✔DOT
✔✔Which of the following refrigerant has a molecular formula is C2H4F2: - ✔✔R-152a
✔✔The AHRI standard now contains the new specification to limit unsaturated
impurities in HFC-134a to a maximum level of ________ - ✔✔40 ppm
✔✔Refrigerants may be mixed in recovery cylinders: - ✔✔False
✔✔After reaching the required recovery vacuum on an system, if the system pressure
_____, indicating that there is either refrigerant in liquid form, refrigerant trapped in the
oil, or a leak in the system. - ✔✔rises
✔✔Refrigeration cylinders must be re-tested at ______ intervals - ✔✔five-year
✔✔Ozone in the Earth's stratosphere is created by UV light striking _____ molecule -
✔✔Oxygen
✔✔R- 134a is a corrosive refrigerant: - ✔✔False
✔✔Persons servicing MVACs do not have this choice they must be certified as _______
MVAC technicians if they perform the AC service for compensation. - ✔✔Section 609
✔✔With the rising cost of refrigerant, the value of the refrigerant stored in a 50-lb.
recovery tank is worth _______ the cost of a recovery tank - ✔✔five times
✔✔On _______, the U.S. EPA enacted the provisions of this agreement into regulations
for the United States - ✔✔Aug 1, 1988
✔✔Used cylinders can be recycled with other scrap metal - ✔✔True
✔✔One chlorine or bromine radical liberated has the capability to act as catalyst and
breakdown _____ number of ozone molecules in stratosphere: - ✔✔100,000
