FCC HVAC Refrigerant Identifications and
Classifications Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
How are refrigerants identified? - CORRECT ANSWER By type (CFC, HCFC, HFC,
HFO, HC) and ASHRAE number
or
with "R" plus the ASHRAE number (HFC-134a or R-134a)
HFC - CORRECT ANSWER Hydrogen Fluorine Carbon
HC - CORRECT ANSWER Hydrocarbon
HFO - CORRECT ANSWER Hydrofluoroolefin
CFC - CORRECT ANSWER Chlorofluorocarbon
HCFC - CORRECT ANSWER Hydrochlorofluorocarbon
ODP - CORRECT ANSWER Ozone depletion potential
What does ODP measure? - CORRECT ANSWER It measures the ability of a
substance to destroy ozone in the stratosphere.
What does refrigerants contain that has changed the natural balance of the Earth and is
depleting the ozone layer? - CORRECT ANSWER Chlorine
What happens when CFCs and HCFCS reach the stratosphere? - CORRECT
ANSWER The sun's UV radiation causes them to break apart.
, Why is the chlorine atom so dangerous in the stratosphere? - CORRECT ANSWER A
single chlorine atom can last in the Stratosphere for 120 years destroying up to 100,000 ozone
molecules.
How are CFCs and HCFCs different then other chlorine compounds and naturally-occurring
chlorine - CORRECT ANSWER Because the chlorine in them will neither dissolve in
water nor break down into compounds that dissolve in water, so they do not rain out of the
atmosphere.
Describe the chlorine in HFCs - CORRECT ANSWER They do not contain chlorine
that effects the ozone layer
What do most HFCs have? - CORRECT ANSWER A high GWP
What is the purpose of GWP? - CORRECT ANSWER Global Warming Potential
(GWP) was established to provide comparisons of the global warming impacts of different
gases over a span of time
What is used as a baseline for GWP and what is it's value? - CORRECT
ANSWER Carbon Dioxide (CO₂) is used as the baseline measurement for global
warming potential and has a value of 1.
Which refrigerant group have global warming potentials thousands of times greater compared
to carbon dioxide.? - CORRECT ANSWER HFCs
Which group of refrigerants have the lowest global warming potential compared to CFCs,
HCFCs, and HFCs? - CORRECT ANSWER Hydrocarbon (HC) and
Hydrofluoroolefins (HFO)
R-600a - CORRECT ANSWER Isobutane
Classifications Exam UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
How are refrigerants identified? - CORRECT ANSWER By type (CFC, HCFC, HFC,
HFO, HC) and ASHRAE number
or
with "R" plus the ASHRAE number (HFC-134a or R-134a)
HFC - CORRECT ANSWER Hydrogen Fluorine Carbon
HC - CORRECT ANSWER Hydrocarbon
HFO - CORRECT ANSWER Hydrofluoroolefin
CFC - CORRECT ANSWER Chlorofluorocarbon
HCFC - CORRECT ANSWER Hydrochlorofluorocarbon
ODP - CORRECT ANSWER Ozone depletion potential
What does ODP measure? - CORRECT ANSWER It measures the ability of a
substance to destroy ozone in the stratosphere.
What does refrigerants contain that has changed the natural balance of the Earth and is
depleting the ozone layer? - CORRECT ANSWER Chlorine
What happens when CFCs and HCFCS reach the stratosphere? - CORRECT
ANSWER The sun's UV radiation causes them to break apart.
, Why is the chlorine atom so dangerous in the stratosphere? - CORRECT ANSWER A
single chlorine atom can last in the Stratosphere for 120 years destroying up to 100,000 ozone
molecules.
How are CFCs and HCFCs different then other chlorine compounds and naturally-occurring
chlorine - CORRECT ANSWER Because the chlorine in them will neither dissolve in
water nor break down into compounds that dissolve in water, so they do not rain out of the
atmosphere.
Describe the chlorine in HFCs - CORRECT ANSWER They do not contain chlorine
that effects the ozone layer
What do most HFCs have? - CORRECT ANSWER A high GWP
What is the purpose of GWP? - CORRECT ANSWER Global Warming Potential
(GWP) was established to provide comparisons of the global warming impacts of different
gases over a span of time
What is used as a baseline for GWP and what is it's value? - CORRECT
ANSWER Carbon Dioxide (CO₂) is used as the baseline measurement for global
warming potential and has a value of 1.
Which refrigerant group have global warming potentials thousands of times greater compared
to carbon dioxide.? - CORRECT ANSWER HFCs
Which group of refrigerants have the lowest global warming potential compared to CFCs,
HCFCs, and HFCs? - CORRECT ANSWER Hydrocarbon (HC) and
Hydrofluoroolefins (HFO)
R-600a - CORRECT ANSWER Isobutane
