Next EPA 608 Core Exam Practice Test 2

EPA 608 NEC 2023

EPA 608 Core Exam Practice Test 1

Free Online EPA 608 Core Exam Practice Test 1This free 25-question practice test covers the EPA 608 Core section, which all technicians must pass regardless of the equipment type they service. Topics include the Clean Air Act Section 608, ozone depletion and global warming, refrigerant types (CFC, HCFC, HFC), recovery vs recycling vs reclaiming, venting prohibitions, leak rates, refrigeration cycle basics, and refrigerant handling rules.

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Frequently Asked Questions

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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.

The EPA 608 Core section covers rules that apply to ALL certified technicians. Key facts to remember: CFCs/HCFCs must be RECOVERED before opening any system. Only RECLAIMED refrigerant can be sold to another person. HFCs have zero ODP but high GWP. Venting ODS refrigerants has been illegal since July 1, 1992; venting HFCs has been illegal since November 15, 1995. Substantial leak rates: comfort cooling = 15% per year; commercial/industrial = 35% per year. The refrigeration cycle: evaporator absorbs heat → compressor raises pressure → condenser releases heat → expansion valve lowers pressure.

25

Questions

45 min

Time

70%

Pass

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Student Reviews 5.0 / 5 · 1 review

M

Mike Ostrowski

Passed the EPA 608 universal exam on my first attempt. Used these core practice tests for about two weeks beforehand. The refrigerant handling and safety questions here are very close to what's on the actual Prometric exam. Worth every minute.

EPA 608 Core Exam Practice Test 1 — Question List

Question 1: ALL CFC's and HCFC's must be ................. before opening a system for service or maintenance.

Recovered
Recycled
Reclaimed
Disposed

Question 2: A single chlorine atom can destroy how many ozone molecules?

1000
10000
100000
100

Question 3: Which of the following refrigerant can be transferred or sold to another individual?

Recovered
Recycled
Disposed
Reclaimed

Question 4: Which of the following refrigerant has zero ODP?

HCFC
HFC
CFC
CHC

Question 5: For industrial and commercial refrigeration systems, the substantial leak is a leak of ................ percent per year or more of normal charge.

30
15
45
35

Question 6: Synthetic oils must be stored in ..................... containers

metal
steel
plastic
silver

Question 7: Which of the following has maximum concentration percentage in atmosphere?

chlorine
oxygen
nitrogen
carbon dioxide

Question 8: As you travel to higher altitudes, the atmospheric pressure .................

decreases
increases
Remains same

Question 9: From ................ the Clean Air Act makes it illegal for individuals to vent ozone depleting substances into atmosphere.

July 1, 1992
December 31, 1995
November 15, 1995
November 14, 1994

Question 10: Prior to dispose any system containing refrigerant, the technician must first .................

recover the refrigerant
recycle the refrigerant
reclaim the refrigerant
dispose the refrigerant

Question 11: Under section 608 of Clean Air Act venting of HFC's since .................. is violation of act.

November 15, 1995
June 1, 1992
December 31, 1995
November 14, 1994

Question 12: The process of removing refrigerant in any condition from appliance and store it in a external container is .....................................

Refrigerant Recovery
Refrigerant Reclaiming
Refrigerant Recycling
Refrigerant disposing

Question 13: In a refrigerant circuit, where does a liquid absorbs heat?

evaporator
condenser
compressor
expansion valve

Question 14: Pressure is defined as ..................

force per unit area
force per unit volume
flow per second
flow per minute

Question 15: When the gas is heated above its saturation it is said to be .....................

above saturated vapor
super heated vapor
single phase vapor
multi phase vapor

Question 16: Under EPA Section 608, which type of certification covers technicians who work on HIGH-PRESSURE refrigeration systems (such as residential and commercial air conditioners)?

Type I
Type II
Type III
All types are the same

Question 17: Which process cleans refrigerant on-site by removing oil, moisture, and non-condensables, but does NOT bring it to full virgin purity standards?

Recovering
Recycling
Reclaiming
Disposing

Question 18: The ozone layer that protects Earth from harmful ultraviolet radiation is located in which layer of the atmosphere?

Troposphere
Stratosphere
Mesosphere
Thermosphere

Question 19: In the United States, production and import of Class I ODS refrigerants (CFCs such as R-11 and R-12) ended on which date?

July 1, 1992
November 15, 1995
December 31, 1995
January 1, 2000

Question 20: Under EPA Section 608 regulations, for COMFORT COOLING appliances (building HVAC) containing 50 or more pounds of refrigerant, what leak rate per year is considered a "substantial leak" requiring repair?

10%
15%
25%
35%

Question 21: R-22, which was the most common refrigerant used in residential air conditioners for many decades, is classified as what type of refrigerant?

CFC
HFC
HCFC
HFO

Question 22: In a refrigeration circuit, where does the hot refrigerant vapor RELEASE heat to the surrounding air or water?

Evaporator
Condenser
Compressor
Expansion valve

Question 23: True or False: It is acceptable to mix two different types of refrigerant in the same recovery cylinder if the cylinder has enough space.

True
False

Question 24: Under EPA Section 608, all refrigerant recovery and recycling equipment used by technicians must be _____ by an EPA-approved testing organization.

Registered
Certified
Inspected by a local authority
No certification is required

Question 25: Under EPA Section 608 regulations, refrigerants sold in containers greater than 2 pounds may only be purchased by _____ .

Anyone who pays the market price
EPA Section 608 certified technicians only
Only building owners, not technicians
Any licensed plumber or contractor

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

Questions25

Time limit45 min

Pass score70%

RegulationEPA Section 608

DifficultyIntermediate

Last reviewedJun 2026

Timer starts immediately. Progress is auto-saved.

Source: EPA Section 608 (40 CFR Part 82)