EPA Section 608 Module 0119 Technician Certification – Verified Questions
and Answers A+ | HVAC Certification Study Guide | 2026/2027 Exam
Preparation
The over-evacuation of a system: - (ANSWER)does not occur
According to the ASHARE refrigerant safety classification standard, which of the following designations
would be the safest? - (ANSWER)A1
What does ozone in the stratosphere above the earth consists of? - (ANSWER)molecules containing 3
oxygen atoms
How many ozone molecules can each chlorine atom in the stratosphere destroy? - (ANSWER)100,000
molecules
Approved refrigerant recovery cylinders can be identified by which color code? - (ANSWER)Grey Tops
and Yellow Bodies
Which type of refrigerant has the highest ozone depletion potential (ODP?) - (ANSWER)CFCs
Which type if lubricants are HFO refrigerants miscible in? - (ANSWER)POE lubricants
Which refrigerant does not contain chlorine? - (ANSWER)R-134a
When transporting cylinders containing used refrigerant, DOT requires that you: - (ANSWER)Attach DOT
classification tags
What is one of the most serious results of damage to the stratospheric ozone layer? -
(ANSWER)increased rates of skin cancer in humans
What evidence demonstrates that chlorine in the stratosphere is primarily from man-made chemicals
rather than from natural sources such as volcanoes? - (ANSWER)Samples of air taken from the
, EPA Section 608 Module 0119 Technician Certification – Verified Questions
and Answers A+ | HVAC Certification Study Guide | 2026/2027 Exam
Preparation
stratosphere over erupting volcanoes show that volcanoes contribute a small quantity of chlorine to the
stratosphere compared to CFC's and HCFC's
What is being done in the U.S. to stop damage to the stratospheric ozone layer? - (ANSWER)Phasing out
the use of chlorofluorocarbons and hydrochlorofluorocarbons
How should disposable cylinders of CFCs, HCFCs, and HFCs be discarded? - (ANSWER)Recover all
remaining refrigerant, render the cylinders useless, and recycle the metal.
In addition to fines and being required to appear in court, what penalty can be imposed on service
technicians who violate Clean Air Act provisions? - (ANSWER)They may lose their certification
From which of the following does the ozone layer protect the earth? - (ANSWER)ultraviolet radiation
from the sun
Which refrigerant(s) must be recovered before opening or disposing of appliances? - (ANSWER)All three
listed (HFC's, CFC's, HCFC's)
Under EPA's regulations, what standards must reclaimed refrigerant meet before it can be resold? -
(ANSWER)AHRI 700
Which type of refrigerant typically has the lowest global warming potential? - (ANSWER)HFOs
What is the term used to describe the fact that a refrigerant blend has a range of bubble or dew points
at a constant pressure? - (ANSWER)Temperature glide
Which of the following is an approved "drop-in" service replacement for R-22? - (ANSWER)There is no
direct drop-in refrigerant substitutes
and Answers A+ | HVAC Certification Study Guide | 2026/2027 Exam
Preparation
The over-evacuation of a system: - (ANSWER)does not occur
According to the ASHARE refrigerant safety classification standard, which of the following designations
would be the safest? - (ANSWER)A1
What does ozone in the stratosphere above the earth consists of? - (ANSWER)molecules containing 3
oxygen atoms
How many ozone molecules can each chlorine atom in the stratosphere destroy? - (ANSWER)100,000
molecules
Approved refrigerant recovery cylinders can be identified by which color code? - (ANSWER)Grey Tops
and Yellow Bodies
Which type of refrigerant has the highest ozone depletion potential (ODP?) - (ANSWER)CFCs
Which type if lubricants are HFO refrigerants miscible in? - (ANSWER)POE lubricants
Which refrigerant does not contain chlorine? - (ANSWER)R-134a
When transporting cylinders containing used refrigerant, DOT requires that you: - (ANSWER)Attach DOT
classification tags
What is one of the most serious results of damage to the stratospheric ozone layer? -
(ANSWER)increased rates of skin cancer in humans
What evidence demonstrates that chlorine in the stratosphere is primarily from man-made chemicals
rather than from natural sources such as volcanoes? - (ANSWER)Samples of air taken from the
, EPA Section 608 Module 0119 Technician Certification – Verified Questions
and Answers A+ | HVAC Certification Study Guide | 2026/2027 Exam
Preparation
stratosphere over erupting volcanoes show that volcanoes contribute a small quantity of chlorine to the
stratosphere compared to CFC's and HCFC's
What is being done in the U.S. to stop damage to the stratospheric ozone layer? - (ANSWER)Phasing out
the use of chlorofluorocarbons and hydrochlorofluorocarbons
How should disposable cylinders of CFCs, HCFCs, and HFCs be discarded? - (ANSWER)Recover all
remaining refrigerant, render the cylinders useless, and recycle the metal.
In addition to fines and being required to appear in court, what penalty can be imposed on service
technicians who violate Clean Air Act provisions? - (ANSWER)They may lose their certification
From which of the following does the ozone layer protect the earth? - (ANSWER)ultraviolet radiation
from the sun
Which refrigerant(s) must be recovered before opening or disposing of appliances? - (ANSWER)All three
listed (HFC's, CFC's, HCFC's)
Under EPA's regulations, what standards must reclaimed refrigerant meet before it can be resold? -
(ANSWER)AHRI 700
Which type of refrigerant typically has the lowest global warming potential? - (ANSWER)HFOs
What is the term used to describe the fact that a refrigerant blend has a range of bubble or dew points
at a constant pressure? - (ANSWER)Temperature glide
Which of the following is an approved "drop-in" service replacement for R-22? - (ANSWER)There is no
direct drop-in refrigerant substitutes
