EPA 609 Technician
Certification Exam Study Guide
– Practice Questions with
Verified Answers. GRADED A+.
Latest 2026/2027 Update
1. T/F Ozone at ground level ans at Stratosphere is a harmful
pollutant - Answer✔✔-FALSE
2. For determining the Ozone Depletion Potential __________ having
been assigned a factor of 1 - Answer✔✔-CFC-11
3. Ozone layer absorbs and scatters __________ form the sun -
Answer✔✔-Ultraviolet light
4. T/F R-134 is a chlorine-free refrigerant - Answer✔✔-TRUE
,5. a refillable refrigerant cylinder must not be filled above _________
of its full capacity - Answer✔✔-80%
6. T/F Ester-based synthetic oils can be mixed with oils - Answer✔✔-
FALSE
7. An award of up to ___________ may be paid to a person
suppplying information that leads to a penalty against a technician
who is intentially venting - Answer✔✔-$10,000
8. MVAC systems being disposed must be evacuated to
_____________ of mercury before being scrapped - Answer✔✔-4
INCHES
9. Since _______________ it is no longer legal for CFCs to be
manufactured or imported into the United States - Answer✔✔-JAN
1ST, 1996
10. Since ___________________ it is illegal to vent substitutes for
CFC and HCFC refrigerants - Answer✔✔-NOV 15, 1995
11. Each chlorine ion are able to destroy ___________________
ozone molecules - Answer✔✔-100,000
, 12. Lifetime of CFSs is believed to range from ________ years -
Answer✔✔-20 TO 100
13. Ozone molecules consists of _______________ atoms of oxygen -
Answer✔✔-THREE
14.Non-condensables in a refrigeration system result in a
________________ discharge pressure - Answer✔✔-higher
15. T/F Ozone depletion increases global warming - Answer✔✔-TRUE
16. T/F If a technician is already trained and certified to handle HFC-
134a - Answer✔✔-FALSE
17.The Clean Air Act (CAA) of _____________ directs EPA to establish
requirements - Answer✔✔-1990
18. Over the road refrigeration units and R-22 (HCFC) air conditioning
- Answer✔✔-such as that found in buses, also require Section
____________ certification, 608
19. Moisture level in Recycled R-12(CFC-12) that has been directly
removed from - Answer✔✔-and intended to be returned to, a mobile
air-conditioning system cannot exceed ________________ PPM by
weight, 15
Certification Exam Study Guide
– Practice Questions with
Verified Answers. GRADED A+.
Latest 2026/2027 Update
1. T/F Ozone at ground level ans at Stratosphere is a harmful
pollutant - Answer✔✔-FALSE
2. For determining the Ozone Depletion Potential __________ having
been assigned a factor of 1 - Answer✔✔-CFC-11
3. Ozone layer absorbs and scatters __________ form the sun -
Answer✔✔-Ultraviolet light
4. T/F R-134 is a chlorine-free refrigerant - Answer✔✔-TRUE
,5. a refillable refrigerant cylinder must not be filled above _________
of its full capacity - Answer✔✔-80%
6. T/F Ester-based synthetic oils can be mixed with oils - Answer✔✔-
FALSE
7. An award of up to ___________ may be paid to a person
suppplying information that leads to a penalty against a technician
who is intentially venting - Answer✔✔-$10,000
8. MVAC systems being disposed must be evacuated to
_____________ of mercury before being scrapped - Answer✔✔-4
INCHES
9. Since _______________ it is no longer legal for CFCs to be
manufactured or imported into the United States - Answer✔✔-JAN
1ST, 1996
10. Since ___________________ it is illegal to vent substitutes for
CFC and HCFC refrigerants - Answer✔✔-NOV 15, 1995
11. Each chlorine ion are able to destroy ___________________
ozone molecules - Answer✔✔-100,000
, 12. Lifetime of CFSs is believed to range from ________ years -
Answer✔✔-20 TO 100
13. Ozone molecules consists of _______________ atoms of oxygen -
Answer✔✔-THREE
14.Non-condensables in a refrigeration system result in a
________________ discharge pressure - Answer✔✔-higher
15. T/F Ozone depletion increases global warming - Answer✔✔-TRUE
16. T/F If a technician is already trained and certified to handle HFC-
134a - Answer✔✔-FALSE
17.The Clean Air Act (CAA) of _____________ directs EPA to establish
requirements - Answer✔✔-1990
18. Over the road refrigeration units and R-22 (HCFC) air conditioning
- Answer✔✔-such as that found in buses, also require Section
____________ certification, 608
19. Moisture level in Recycled R-12(CFC-12) that has been directly
removed from - Answer✔✔-and intended to be returned to, a mobile
air-conditioning system cannot exceed ________________ PPM by
weight, 15
