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EPA 608 NEC 2023

EPA 608 Type 2 Exam Practice Test 1

Free EPA 608 Type 2 Exam Practice Tests-1

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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 1 has 14 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: 14 multiple-choice, one correct answer each

14

Questions

21 min

Time

70%

Pass

Timer starts immediately. Progress is auto-saved.

EPA 608 Type 2 Exam Practice Test 1 — Question List

Question 1: If the system has a normal charge of 80 pounds, which of the following is the method to charge this system?

Charge with vapor through suction line service valve
Charge with vapor through discharge service valve
Charge with liquid through liquid line service valve
Charge with vapor through vapor line service valve

Question 2: In which of the following combination the pressure relief valves should not installed?

Series
Parallel
Vertically
Horizontally

Question 3: The R-12 refrigeration system which uses water cooled condenser should be charged first with vapor pressure of at least ………… before switching to liquid charging.

0 psig
25 psig
35 psig
100 psig

Question 4: Which of the following component directly following the evaporator in the refrigeration system?

Receiver
Metering device
Accumulator
Condenser

Question 5: The leak check should be done on heat pump that uses R-410A with ………..

Pressurised oxygen
Pressurised HCFC
Pressurised hydrogen
Pressurised nitrogen

Question 6: The compressor should be isolated before changing the compressor on a system containing R-410A then evacuate the compressor section to ……………… ……………… and hold. If the system pressure does not rise, remove the compressor.

Atmospheric pressure
10 inches of vacuum
15 inches of vacuum
25 inches of vacuum

Question 7: What should be done when you reach required recovery vacuum on a system?

Immediately disconnect the recycling equipment and open the system for service
Immediately pressurise the system with nitrogen and open the system for service
See if the system pressure rises, indicating the small amount of refrigerant is trapped in system
Immediately pressurise with hydrogen and open the system for service

Question 8: Which of the following condition the reciprocating compressor should not be energized?

When the discharge service valve is close
When the discharge service valve is open
When the suction service valve is open
When the suction pressure is high.

Question 9: Every refrigeration system should be protected by ……………………..

Low pressure control device
Pressure relief device
Refrigerant recovery receiver
stop valve

Question 10: What is the non-operating pressure inside a R-410 refrigerant system at room temperature 72 <sup>0</sup>F?

78 psig
110 psig
210 psig
410 psig

Question 11: Which of the following condition the oil sample should be taken from refrigeration system?

When a new filter dryer is installed
When the compressor has burned out
When the unit is not cooling properly
When there is a leak of refrigerant

Question 12: Which of the following does the recovered refrigerant from refrigeration system contains?

Acids only
Moisture only
Both acids and moisture
Nitrogen only

Question 13: which of the following is a measuring unit of deep vacuum in a system?

psig
psia
microns
inches of hg

Question 14: The recovery process of liquid refrigerant is .................... than vapor refrigerant?

same
faster
slower
none

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

Questions14

Time limit21 min

Pass score70%

Code editionNEC 2023

DifficultyIntermediate

Last reviewedJun 2026

Timer starts immediately. Progress is auto-saved.

Source: EPA Section 608 (40 CFR Part 82)