HVAC/EPA Certification Exam Latest 2026
Questions and Correct Detailed Answers
Already Graded A+
How many types of HVAC certifications are there? - CORRECT ANSWER-There
are 4 types.
What does a metering device do? - CORRECT ANSWER-The metering device
causes a reduction in pressure, and therefore a reduction in saturation
temperature.
What depletes the ozone layer? - CORRECT ANSWER-CFC's and HCFC's.
When a chlorine atom meets with an Ozone molecule, it takes how many Oxygen
atoms from the Ozone? - CORRECT ANSWER-One.
When a chlorine atom meets with an Ozone molecule, it takes one Oxygen atom
from the Ozone. What compound does this form? - CORRECT ANSWER-
Chlorine Monoxide (CIO). O2
,A single Chlorine atom can destroy how many Ozone molecules? - CORRECT
ANSWER-100,000 Ozone molecules.
Volcanoes contribute a blank quantity of Chlorine as compared to CFC's? -
CORRECT ANSWER-A small quantity.
What is absorbed in the evaporator? - CORRECT ANSWER-Heat is absorbed in
the evaporator.
What happens in the evaporator? - CORRECT ANSWER-Heat is absorbed in the
evaporator and causes the refrigerant to boil from liquid to vapor.
At the outlet of the evaporator the refrigerant is what? - CORRECT ANSWER-
The refrigerant is now a low temperature, low pressure vapor.
As the refrigerant expels heat, the refrigerant condenses to a what? - CORRECT
ANSWER-It condenses to a liquid.
At the condenser outlet what pressure is the refrigerant? - CORRECT ANSWER-
The refrigerant is a high pressure liquid.
, What is a metering device used for? - CORRECT ANSWER-The metering device
causes a reduction in pressure, and therefore a reduction in saturation
temperature.
A system that uses a capillary tube or fixed bore metering device is usually
equipped with a blank? - CORRECT ANSWER-Accumulator which would be
located in the suction line directly following the evaporator.
A system that uses a thermostatic expansion valve is usually equipped with a
what? - CORRECT ANSWER-A receiver, which would be located in the liquid
line directly following the condenser.
The compound gauge is what color? - CORRECT ANSWER-Blue.
The high pressure gauge is what color? - CORRECT ANSWER-Red.
The blank measures low pressure (psig) and vacuum (inches Hg.). - CORRECT
ANSWER-Compound gauge.
What does the high pressure gauge measure. - CORRECT ANSWER-It measures
high side (discharge) pressure.
Questions and Correct Detailed Answers
Already Graded A+
How many types of HVAC certifications are there? - CORRECT ANSWER-There
are 4 types.
What does a metering device do? - CORRECT ANSWER-The metering device
causes a reduction in pressure, and therefore a reduction in saturation
temperature.
What depletes the ozone layer? - CORRECT ANSWER-CFC's and HCFC's.
When a chlorine atom meets with an Ozone molecule, it takes how many Oxygen
atoms from the Ozone? - CORRECT ANSWER-One.
When a chlorine atom meets with an Ozone molecule, it takes one Oxygen atom
from the Ozone. What compound does this form? - CORRECT ANSWER-
Chlorine Monoxide (CIO). O2
,A single Chlorine atom can destroy how many Ozone molecules? - CORRECT
ANSWER-100,000 Ozone molecules.
Volcanoes contribute a blank quantity of Chlorine as compared to CFC's? -
CORRECT ANSWER-A small quantity.
What is absorbed in the evaporator? - CORRECT ANSWER-Heat is absorbed in
the evaporator.
What happens in the evaporator? - CORRECT ANSWER-Heat is absorbed in the
evaporator and causes the refrigerant to boil from liquid to vapor.
At the outlet of the evaporator the refrigerant is what? - CORRECT ANSWER-
The refrigerant is now a low temperature, low pressure vapor.
As the refrigerant expels heat, the refrigerant condenses to a what? - CORRECT
ANSWER-It condenses to a liquid.
At the condenser outlet what pressure is the refrigerant? - CORRECT ANSWER-
The refrigerant is a high pressure liquid.
, What is a metering device used for? - CORRECT ANSWER-The metering device
causes a reduction in pressure, and therefore a reduction in saturation
temperature.
A system that uses a capillary tube or fixed bore metering device is usually
equipped with a blank? - CORRECT ANSWER-Accumulator which would be
located in the suction line directly following the evaporator.
A system that uses a thermostatic expansion valve is usually equipped with a
what? - CORRECT ANSWER-A receiver, which would be located in the liquid
line directly following the condenser.
The compound gauge is what color? - CORRECT ANSWER-Blue.
The high pressure gauge is what color? - CORRECT ANSWER-Red.
The blank measures low pressure (psig) and vacuum (inches Hg.). - CORRECT
ANSWER-Compound gauge.
What does the high pressure gauge measure. - CORRECT ANSWER-It measures
high side (discharge) pressure.
