EPA TYPE 2-2026 EXAM Questions and
Answers
A chiller containing 150 pounds of HCFC refrigerant is leaking above the leak rate
threshold. Unless granted additional time, what must be completed in 30 days? -
Correct answer-Repair the appliance so that it leaks below the threshold and
conduct the initial verification test.
A chiller for comfort cooling that contains 50 pounds or more of R-123 is leaking.
Starting in 2019, at what leak rate does the EPA require that the equipment be
repaired? - Correct answer-10%
A comfort-cooling appliance containing 50 pounds or more of R-22 is found to be
leaking beyond the applicable leak rate threshold. Unless granted additional time,
how many days do you have to repair the leak and conduct the initial leak
verification? - Correct answer-30 days
A company uses a chiller that diverts 55% of its cooling capacity to one of its
manufacturing lines and 45% of its cooling capacity to air condition the office
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,spaces. Which leak rate category would this chiller be in? - Correct answer-
Industrial process refrigeration
A crankcase heater is often used to prevent refrigerant from migrating to the oil
during periods of: - Correct answer-Low ambient temperature
A low pressure chiller used for comfort cooling must be repaired if it has an annual
leak rate of___ of the total charge. - Correct answer-10 percent
A refrigerant sensor which will sound an alarm and automatically start a ventilation
system in occupied equipment rooms fall under; - Correct answer-ASHRAE
Standard 15
A rupture disk for low pressure chiller will rupture at; - Correct answer-15 psig
After a leak repair of a supermarket rack using 3000 lbs. of R-22 and a successful
initial verification test, when must a follow-up leak verification test be conducted?
- Correct answer-Within 10 days
After all the liquid has been removed from an average 350 ton approximately how
much vapor refrigerant remains in the system - Correct answer-100 Ibs
After installation of a field piped split system, the unit should first be pressurized
with; - Correct answer-Nitrogen and leak checked.
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, After refrigerant liquid has been recovered from the appliance, any remaining
vapor is; - Correct answer-removed by the recovery system.
After refrigerant liquid has been recovered from the appliance, any remaining
vapor is; - Correct answer-removed by the recovery system.
After system servicing and recharging, why is refrigerant vapor re-introduced to
the chiller before refrigerant liquid? - Correct answer-Liquid charged into a deep
vacuum will evaporate and may lower the temperature, freezing water in the heat
exchanger tube bundle.
All Refrigeration & HVAC systems are protected by a; - Correct answer-Pressure
relief valve
An initial leak verification test failed after repairing a leak in a rack refrigeration
system for a supermarket using an HCFC refrigerant. What would be the next
step(s)? - Correct answer-Conduct additional repairs within the 30-day repair
window or mothball the appliance.
An operating unit that has a receiver/storage tank requires refrigerant system
service. When servicing the unit; - Correct answer-refrigerant should be pumped
down to and isolated in the receiver.
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Answers
A chiller containing 150 pounds of HCFC refrigerant is leaking above the leak rate
threshold. Unless granted additional time, what must be completed in 30 days? -
Correct answer-Repair the appliance so that it leaks below the threshold and
conduct the initial verification test.
A chiller for comfort cooling that contains 50 pounds or more of R-123 is leaking.
Starting in 2019, at what leak rate does the EPA require that the equipment be
repaired? - Correct answer-10%
A comfort-cooling appliance containing 50 pounds or more of R-22 is found to be
leaking beyond the applicable leak rate threshold. Unless granted additional time,
how many days do you have to repair the leak and conduct the initial leak
verification? - Correct answer-30 days
A company uses a chiller that diverts 55% of its cooling capacity to one of its
manufacturing lines and 45% of its cooling capacity to air condition the office
©COPYRIGHT 2025 ALL RIGHTS RESERVED 1
,spaces. Which leak rate category would this chiller be in? - Correct answer-
Industrial process refrigeration
A crankcase heater is often used to prevent refrigerant from migrating to the oil
during periods of: - Correct answer-Low ambient temperature
A low pressure chiller used for comfort cooling must be repaired if it has an annual
leak rate of___ of the total charge. - Correct answer-10 percent
A refrigerant sensor which will sound an alarm and automatically start a ventilation
system in occupied equipment rooms fall under; - Correct answer-ASHRAE
Standard 15
A rupture disk for low pressure chiller will rupture at; - Correct answer-15 psig
After a leak repair of a supermarket rack using 3000 lbs. of R-22 and a successful
initial verification test, when must a follow-up leak verification test be conducted?
- Correct answer-Within 10 days
After all the liquid has been removed from an average 350 ton approximately how
much vapor refrigerant remains in the system - Correct answer-100 Ibs
After installation of a field piped split system, the unit should first be pressurized
with; - Correct answer-Nitrogen and leak checked.
©COPYRIGHT 2025 ALL RIGHTS RESERVED 2
, After refrigerant liquid has been recovered from the appliance, any remaining
vapor is; - Correct answer-removed by the recovery system.
After refrigerant liquid has been recovered from the appliance, any remaining
vapor is; - Correct answer-removed by the recovery system.
After system servicing and recharging, why is refrigerant vapor re-introduced to
the chiller before refrigerant liquid? - Correct answer-Liquid charged into a deep
vacuum will evaporate and may lower the temperature, freezing water in the heat
exchanger tube bundle.
All Refrigeration & HVAC systems are protected by a; - Correct answer-Pressure
relief valve
An initial leak verification test failed after repairing a leak in a rack refrigeration
system for a supermarket using an HCFC refrigerant. What would be the next
step(s)? - Correct answer-Conduct additional repairs within the 30-day repair
window or mothball the appliance.
An operating unit that has a receiver/storage tank requires refrigerant system
service. When servicing the unit; - Correct answer-refrigerant should be pumped
down to and isolated in the receiver.
©COPYRIGHT 2025 ALL RIGHTS RESERVED 3
