©THESTAR 2025 ALL RIGHTS RESERVED 12:35 PM A+
HVAC EPA Certification Type 3 Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass
What type of appliance can a technician work on with a type 3 certification? - Answer✔Low
pressure appliances such as chillers
What do CFC-11, HCFC-123, HFC-245fa, and HFO-1233zd have in common? - Answer✔They are
low pressure refrigerants that have high boiling points
Low pressure appliances operate - Answer✔In a vacuum or below atmospheric pressure
Where does the purge unit take its suction from? - Answer✔The top of the condenser
What is the pressure relief device on a low-pressure chiller called? - Answer✔A rupture disc
1
, ©THESTAR 2025 ALL RIGHTS RESERVED 12:35 PM A+
What is the boiling point of R-123 refrigerant at atmospheric pressure? - Answer✔83 degrees F
When charging a low pressure water chiller with R-123, charging begins with vapor, until what
pressure is reached in the system? - Answer✔18.9 "hg
If the condensing temperature of a low pressure chiller is 100 degrees F, that means the high
side pressure is: - Answer✔6.1 psig
What can happen when a low pressure appliance has a leak at a fitting or gasket? - Answer✔Air
and moisture can enter the system
What do low pressure appliances require since they operate below atmospheric pressure? -
Answer✔A purge unit
What is the most effective way to leak test a charged low pressure chiller? - Answer✔Use
controlled hot water or electric heating blankets to increase system pressure
2
HVAC EPA Certification Type 3 Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass
What type of appliance can a technician work on with a type 3 certification? - Answer✔Low
pressure appliances such as chillers
What do CFC-11, HCFC-123, HFC-245fa, and HFO-1233zd have in common? - Answer✔They are
low pressure refrigerants that have high boiling points
Low pressure appliances operate - Answer✔In a vacuum or below atmospheric pressure
Where does the purge unit take its suction from? - Answer✔The top of the condenser
What is the pressure relief device on a low-pressure chiller called? - Answer✔A rupture disc
1
, ©THESTAR 2025 ALL RIGHTS RESERVED 12:35 PM A+
What is the boiling point of R-123 refrigerant at atmospheric pressure? - Answer✔83 degrees F
When charging a low pressure water chiller with R-123, charging begins with vapor, until what
pressure is reached in the system? - Answer✔18.9 "hg
If the condensing temperature of a low pressure chiller is 100 degrees F, that means the high
side pressure is: - Answer✔6.1 psig
What can happen when a low pressure appliance has a leak at a fitting or gasket? - Answer✔Air
and moisture can enter the system
What do low pressure appliances require since they operate below atmospheric pressure? -
Answer✔A purge unit
What is the most effective way to leak test a charged low pressure chiller? - Answer✔Use
controlled hot water or electric heating blankets to increase system pressure
2
