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EPA 608 NEC 2023

EPA 608 Type 2 Exam Practice Test 2

Free Online EPA 608 Type 2 exam practice test -2

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The EPA 608 certification is required by law for any technician who purchases or handles refrigerants. It covers safe handling, leak detection, recovery, and environmental regulations.

Type I covers small appliances (≤5 lbs refrigerant), Type II covers high-pressure systems, Type III covers low-pressure systems, and Universal covers all three. Most HVAC technicians pursue Universal certification.

You must score at least 70% on each section of the exam. The Universal exam has four parts: core, Type I, Type II, and Type III.

How to Use This Practice Test

This EPA 608 Type 2 Exam Practice Test 2 has 10 questions with detailed answers and NEC references. Take the full test, review every wrong answer, and look up the NEC article it references before moving on.

Tip: The EPA 608 exam is NOT open book — memorize refrigerant ODP/GWP values and recovery rules before the exam.

Topics covered: Refrigerant regulations, recovery procedures, leak detection, and refrigerant properties.
Passing score: 70% required on each section. Universal certification requires passing all four sections.
Questions: 10 multiple-choice, one correct answer each

10

Questions

15 min

Time

70%

Pass

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EPA 608 Type 2 Exam Practice Test 2 — Question List

Question 1: Which of the following case in refrigerant requires an oil sample should taken?

Compressor burn out
Evaporator coil failure
Filter dryer damage
Whenever the system is opened for maintenance

Question 2: Which of the following is an indicator of possible leak in high pressure refrigeration system?

High head pressure
Low water pressure
Excessive super heat
Frequent purging

Question 3: Usually in which of the following refrigerant component the oil foaming occurs ?

Condenser
Accumulator
Evaporator
Compressor

Question 4: Which of the following is effect of non-condensables in refrigeration system?

Lower suction pressure
Higher suction pressure
Lower discharge pressure
Higher discharge pressure

Question 5: If large vacuum pump is used for evacuating a refrigeration system………….

It causes the trapped oil to freeze
It causes the trapped refrigerant to freeze
It causes the trapped water to freeze
It causes the components to freeze

Question 6: Which of the following is the frequently carried maintenance of refrigerant recovery system?

Checking the compressor valves
Adding refrigerant to encounter the leakages
Changing the filter and compressor oil
Cleaning the compressor oil

Question 7: A filter-dryer must be installed in the ……………. Line to remove moisture and filter contaminants

Suction
Discharge
Liquid
Vapour

Question 8: The phase of the refrigerant in the receiver of refrigeration system is ………………………

Low temperature high pressure liquid
Low temperature high pressure vapour
High temperature low pressure liquid
High temperature low pressure vapour

Question 9: As per ASHREE Standard 15, The following refrigerants require equipment room monitoring?

R-410
R -22
R-134 a
All refrigerants

Question 10: The purpose of regulator equipped with nitrogen tank?

To increase the outer pressure so that leak test is efficient
To lower the outlet pressure
To control the nitrogen flow from the rank
To the control the nitrogen temperature at outlet

Study Tip: The EPA 608 exam is closed book. Memorize: recovery is required before opening any refrigerant system. Venting refrigerant is illegal. Know the ODP and GWP values for R-22, R-410A, R-134a, R-32, and R-454B.

EXAM CARD EPA 608

Questions10

Time limit15 min

Pass score70%

Code editionNEC 2023

DifficultyIntermediate

Last reviewedJun 2026

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Source: EPA Section 608 (40 CFR Part 82)