EPA 608 Type 2 Practice Test 2025 (High Pressure Appliances)

Last Updated on April 21, 2025

EPA 608 Type 2 Practice Test 2025 (High or Very High-Pressure Appliances) Questions and Answers. You can free prepare for the EPA 608 Certification Exam on our website.

High-pressure or extremely high-pressure systems are covered in the Type II exam, but not vehicle air conditioning or small appliances. Although the recovery procedures and standards are also part of this exam, the focus is more on leak detection.

In the actual test, there will be 25 questions with the following subject matter:

Before charging a system, it is essential to know the correct methods for identifying leaks and conducting a leak test.
Annual leak rate for systems holding more than 50 pounds of refrigerant in commercial and industrial refrigeration
Techniques and needs for recovery
The best way to manage emissions while the system is being recovered and reduce cross-contamination
Recovery requirements for the disposal, maintenance, and leaks of these systems.
The determination of a high-pressure system’s essential parts
How to do the pressure/temperature test and where the refrigerant is situated in the system

EPA 608 Type 2 Practice Test (High or Very High Pressure Appliances)

101

EPA 608 Type 2 High or Very high Pressure Appliances

1 / 40

1) What are the typical pressure settings for rupture discs on low pressure systems and recovery equipment?

A) 10 psig

B) 5 psig

C) 20 psig

D) 15 psig

2 / 40

2) What is the primary purpose of a condenser in a refrigeration system?

A) Increase the pressure of the refrigerant

B) Control the flow of refrigerant

C) Reject heat from the refrigerant

D) Absorb heat from the refrigerant

3 / 40

3) When using a system-dependent recovery system with an operating compressor, where should the refrigerant be recovered from?

A) High side of the system

B) None of the above

C) Both high and low side

D) Low side of the system

4 / 40

4) What type of refrigerant was the most common before outlawing CFCs and HCFCs?

A) R-134A

B) R-12

C) R-500

D) R-22

5 / 40

5) What is the purpose of the filter drier and when should it be changed?

A) To filter the oil. Change every year.

B) To remove moisture from the refrigerant, replace on a routine basis or anytime a system is opened

C) Cleans the air. Replace monthly.

D) Dryer’s air filters. Replace yearly.

6 / 40

6) Before charging a new system with refrigerant, what should be done?

A) Pressurize with oxygen and leak check

B) Pressurize with nitrogen (classified as an inert gas) and leak checked.

C) Pressurize with compressed air and leak check.

D) None of the above

7 / 40

7) What is the primary purpose of a filter-drier in a refrigeration system?

A) Reduce pressure

B) Remove moisture and contaminants

C) Increase refrigerant temperature

D) Control refrigerant flow

8 / 40

8) Which refrigerant can be used for leak detection as a trace gas and pressurized with nitrogen?

A) R-11

B) R-22

C) R-12

D) R-115

9 / 40

9) What type of oil is commonly used with R-22 refrigerant?

A) PAG oil

B) Alkylbenzene oil

C) Polyolester oil

D) Mineral oil

10 / 40

10) Why is it important to regularly check and repair refrigerant leaks?

A) To prevent environmental harm and ensure system efficiency

B) To increase refrigerant levels

C) To reduce energy consumption

D) To avoid system shutdowns

11 / 40

11) Industrial process and commercial refrigeration equipment with over 50 pounds of refrigerant with an annual leak rate of ___ % requires repair under EPA regulations.

A) 15

B) 35

C) 50

D) 0

12 / 40

12) When using a system-dependent recovery system with a non-operating compressor, where should the refrigerant be recovered from?

A) Low side of the system

B) High side of the system

C) None of the above

D) Both high and low side

13 / 40

13) Using large vacuum pumps can lead to freezing of water in the system. What are ways the technician can help prevent the freezing?

A) Decrease the vacuum pressure.

B) Use a smaller vacuum pump.

C) Increase pressure by introducing air.

D) Increase pressure by introducing nitrogen to counteract freezing.

14 / 40

14) What tools can you use to find the general area of leaks and pinpoint leaks?

A) Refrigerant dye

B) Look for oil residue

C) Electronic or ultrasonic leak detector will provide the general area of the leak.

D) Soap bubbles.

15 / 40

15) Industrial process and commercial refrigeration equipment with over 50 pounds of refrigerant with an annual leak rate of ___ % requires repair under EPA regulations.

A) 0

B) 50

C) 15

D) 35

16 / 40

16) Using large vacuum pumps can lead to freezing of water in the system. What are ways the technician can help prevent the freezing?

A) Increase pressure by introducing air.

B) Decrease the vacuum pressure.

C) Increase pressure by introducing nitrogen to counteract freezing.

D) Use a smaller vacuum pump.

17 / 40

17) What is the primary purpose of a condenser in a refrigeration system?

A) Control the flow of refrigerant

B) Increase the pressure of the refrigerant

C) Reject heat from the refrigerant

D) Absorb heat from the refrigerant

18 / 40

18) How can you tell through a sight glass if there is excess moisture in the system?

A) You can see moisture bubbles.

B) Sight glass is clear.

C) You can see gas bubbles.

D) Look for color changes of the refrigerant.

19 / 40

19) The required level of evacuation for recovery equipment manufactured after November 15, 1993, on a system containing less than 200 pounds of R-12 refrigerant is:

A) 0 inches Hg

B) 15 inches Hg

C) 10 inches Hg

D) 4 inches Hg

20 / 40

20) How can you increase the pressure in the system to leak check a low-pressure system?

A) Heater blankets

B) a and b

C) None of the above

D) Controlled hot water

21 / 40

21) Comfort cooling chillers and all other equipment with over 50 pounds of refrigerant with an annual leak rate of ___ % requires repair under EPA regulations:

A) 15

B) 50

C) 35

D) 0

22 / 40

22) What must be done before opening a refrigeration system for maintenance?

A) Charge the system

B) Recover the refrigerant

C) Pressurize the system

D) Evacuate the system

23 / 40

23) What is the most effective way to remove trapped refrigerant from oil during recovery?

A) Drain the oil

B) Heat and tap the compressor with a mallet

C) Use a vacuum pump

D) Use a refrigerant recovery machine

24 / 40

24) Comfort cooling chillers and all other equipment with over 50 pounds of refrigerant with an annual leak rate of ___ % requires repair under EPA regulations:

A) 15

B) 50

C) 35

D) 0

25 / 40

25) What type of refrigerant was the most common before outlawing CFCs and HCFCs?

A) R-500

B) R-12

C) R-22

D) R-134A

26 / 40

26) Why should refrigerant cylinders not be filled more than 80%?

A) To ensure proper pressure

B) To prevent leaks

C) To allow for expansion of the refrigerant

D) To avoid contamination

27 / 40

27) Traces of oil around a sight glass inlet fitting of a refrigeration system might be the indication of:

A) An overcharge

B) A restriction at the TXV

C) A leak

D) Excessive oil in the system

28 / 40

28) What is the primary function of an evaporator in a refrigeration system?

A) Absorb heat from the refrigerant

B) Absorb heat from the air

C) Control the flow of refrigerant

D) Reject heat from the refrigerant

29 / 40

29) Describe ways you can visually look for leaks.

A) All the above

B) Excessive superheat, caused by low refrigerant charge

C) Looking for traces of oil

D) Using soap bubbles

30 / 40

30) How should a water box be leak tested?

A) Remove water, pressurize and check with a gas detector

B) Test the water for traces of refrigerant

C) Remove water, then place the leak detector probe in through the drain valve

D) Look for bubbles in the water

31 / 40

31) Type II classification, as identified by EPA, applies to what equipment?

A) Split air conditioning equipment with five (5) pounds of refrigerant or more

B) Low pressure appliances

C) Refrigerators, freezers, and vending machine appliances

D) Small appliances with five (5) pounds of refrigerant or less

32 / 40

32) What should be done with leaks in small appliances?

A) None of the above

B) Not mandatory to perform a leak repair; however, it should be done whenever possible

C) Leaks over 50 pounds must be repaired

D) Leaks more than one pound and under 5 pounds must be repaired

33 / 40

33) How can you tell what type of refrigerant is in a system?

A) Using the temperature/pressure chart

B) Manufacturer's data sheet

C) Check the unit label

D) All the above

34 / 40

34) What are the leak repair requirements for comfort cooling appliances and commercial appliances containing 50 lbs. or more of refrigerant?

A) None of the above

B) Must be repaired if leak rate exceeds 15% in comfort cooling appliances.

C) a and b

D) Must be repaired if leak rate exceeds 35% in all commercial and industrial process refrigeration.

35 / 40

35) The required level of evacuation for recovery equipment manufactured after November 15, 1993, on a system containing less than 200 pounds of R-12 refrigerant is:

A) 0 inches Hg

B) 10 inches Hg

C) 15 inches Hg

D) 4 inches Hg

36 / 40

36) What should be done if a refrigerant cylinder shows signs of rust or damage?

A) Paint over the rust

B) Remove from service and properly dispose of it

C) Use it only for recovery

D) Refill it with refrigerant

37 / 40

37) What safety precaution should be taken when working with refrigerants?

A) Wearing personal protective equipment (PPE)

B) Wearing hearing protection

C) Wearing a harness

D) Using a ladder

38 / 40

38) How can you tell through a sight glass if there is excess moisture in the system?

A) You can see gas bubbles

B) You can see moisture bubbles

C) Sight glass is clear

D) Look for color changes of the refrigerant

39 / 40

39) What safety device is used to prevent over-pressurization in a refrigeration system?

A) Expansion valve

B) Thermostat

C) Pressure relief valve

D) Pressure gauge

40 / 40

40) What is the purpose of the filter drier and when should it be changed?

A) To filter the oil. Change every year.

B) To remove moisture from the refrigerant, replace on a routine basis or anytime a system is opened

C) Dryer’s air filters. Replace yearly.

D) Cleans the air. Replace monthly.

Your score is

Try more practice test

Free EPA 608 Practice Test 2025 Official Study Guide [PDF]

Core Test (English)

Type 1 (English)

EPA 608 Type 1 (Small Appliances) Practice Test

Type 2 (English)

EPA 608 Type 2 Practice Test (High Pressure Appliances)

Type 3 (English)

EPA 608 Type 3 Low-pressure Appliances