PracticeVideosBlogFlashcardsEspañol
All Practice Exams

120+ Free EPA 608 Universal Practice Questions

Prepare for the EPA Section 608 Universal Refrigerant Certification exam with instant access — no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately
120+ Questions
100% Free

Loading practice questions...

Same family resources

Explore More Refrigerant Certifications (EPA 608, 609 & R-410A)

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

EPA 608 Technician Certification

Practice QuestionsStudy GuideCheat SheetFlashcards2 videos5 blogs

EPA 609 MVAC Technician Certification

Practice QuestionsStudy GuideCheat SheetFlashcards1 video1 blog

R-410A Refrigerant Certification

Practice Questions1 video1 blog

EPA Section 608 Type I (Small Appliances)

Practice Questions

EPA Section 608 Type II (High-Pressure Systems)

Practice Questions

EPA Section 608 Type III (Low-Pressure Systems)

Practice Questions

More From This Family

Videos and articles for deeper review.

VideoBest Refrigerant Leak Detectors for HVAC Technicians: 2026 Buying GuideVideoFREE EPA 609 MVAC Certification Exam Guide 2026: Real Provider Formats, $20-$90 Fees, Lifetime Cert (Practice)VideoFREE R-410A Refrigerant Certification Exam Guide 2026ArticleFREE EPA 609 MVAC Certification Exam Guide 2026: Real Provider Formats, $20-$90 Fees, Lifetime Cert (Practice)31 min readArticleBest Refrigerant Leak Detectors for HVAC Technicians: 2026 Buying Guide13 min readArticleFREE R-410A Refrigerant Certification Exam Guide 20266 min readArticleBest Manifold Gauge Set for HVAC Technicians: Complete 2026 Buying Guide14 min read
2026 Statistics

Key Facts: EPA 608 Universal Exam

100

Practice Questions

OpenExamPrep

100

Exam Questions (Core + 3 types)

EPA

70%

Passing Score per Section

EPA

Lifetime

Certification Never Expires

EPA

All types

Core + Type I, II & III

EPA

Title VI

Clean Air Act Authority

EPA

EPA Section 608 Universal certification covers all three stationary-appliance types. Candidates must pass Core, Type I, Type II, and Type III under closed-book, proctored conditions; the standard minimum is 70% per section. A mail-in/open-book Type I route uses an 84% threshold, but its open-book Core cannot count toward Universal. There are no formal prerequisites, approved certifying organizations set fees and scheduling, and the credential does not expire.

Sample EPA 608 Universal Practice Questions

Try these sample questions to test your EPA 608 Universal exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 120+ question experience with AI tutoring.

1Under Title VI of the Clean Air Act, what is the primary environmental concern that EPA Section 608 regulations are designed to address?
A.Acid rain caused by sulfur dioxide and nitrogen oxide emissions
B.Stratospheric ozone loss from vented refrigerants
C.Ground-level ozone smog from vehicle and industrial exhaust
D.Lead and copper contamination in public drinking-water systems
Explanation: Section 608 of the Clean Air Act prohibits the knowing release (venting) of ozone-depleting refrigerants and their substitutes during service, maintenance, and disposal. The chlorine and bromine in CFCs and HCFCs catalytically destroy stratospheric ozone, which is why these refrigerants must be recovered rather than vented.
2The international agreement that established the phaseout schedule for ozone-depleting substances such as CFCs and HCFCs is known as the:
A.Kyoto Protocol
B.Paris Agreement
C.Montreal Protocol
D.Geneva Convention
Explanation: The Montreal Protocol on Substances that Deplete the Ozone Layer (1987) is the treaty that set the global phaseout schedule for CFCs and HCFCs. The U.S. implements it through Title VI of the Clean Air Act.
3The 'three R's' of responsible refrigerant management under EPA rules are:
A.Reduce, reuse, recycle (general waste slogan, not refrigerant terms)
B.Recover, recycle, reclaim
C.Remove, repair, replace (service steps, not defined 608 terms)
D.Record, report, retain (recordkeeping duties, not the three R's)
Explanation: Recover means to remove refrigerant from a system and store it; recycle cleans it for reuse on-site (oil separation, single-pass filtering); reclaim processes it to meet AHRI 700 purity standards so it can be resold. These three terms have precise regulatory definitions on the 608 exam.
4What distinguishes 'reclaimed' refrigerant from 'recycled' refrigerant?
A.Reclaimed meets AHRI 700 purity; recycled is only on-site cleaned
B.Recycled refrigerant always exceeds reclaimed purity after one pass
C.Reclaimed refrigerant may be vented; recycled refrigerant may not
D.The terms are interchangeable under EPA Section 608 rules
Explanation: Reclamation reprocesses used refrigerant to meet the AHRI 700 standard for new-product purity, with chemical analysis to verify the specification, and may only be done by an EPA-certified reclaimer. Recycling merely reduces contaminants through oil separation and filter-drier passes, typically on-site, and does not certify purity.
5Refrigerants R-12 and R-11 belong to which class of compounds, having the highest ozone-depletion potential (ODP) of 1.0?
A.HFCs (hydrofluorocarbons)
B.HCFCs (hydrochlorofluorocarbons)
C.CFCs (chlorofluorocarbons)
D.HFOs (hydrofluoroolefins)
Explanation: CFCs such as R-11 and R-12 contain chlorine and no hydrogen, so they survive intact into the stratosphere where chlorine destroys ozone — giving them an ODP of about 1.0. New CFC production in the U.S. ended in 1996.
6R-410A and R-134a are examples of HFC refrigerants. What is their ozone-depletion potential (ODP)?
A.Approximately 1.0
B.Approximately 0.05
C.Zero — they contain no chlorine or bromine
D.Approximately 0.5
Explanation: HFCs contain only hydrogen, fluorine, and carbon — no chlorine or bromine — so they have an ODP of zero and do not deplete the ozone layer. However, they are potent greenhouse gases with high GWP, which is why they are now regulated for venting and phased down under the AIM Act.
7Since November 14, 1994, the sale of regulated (ozone-depleting and HFC substitute) refrigerants has been restricted to:
A.Anyone over the age of 18
B.Only licensed plumbers
C.Technicians certified under EPA Section 608 or 609
D.Only refrigerant wholesalers
Explanation: The refrigerant sales restriction limits purchase to technicians certified under Section 608 (stationary) or Section 609 (motor vehicle AC). The 2016/2018 rule extended this restriction to HFC substitutes. Distributors must verify certification and keep records of sales.
8How long must a Section 608 certified technician (or refrigerant purchaser/owner) retain records such as recovery, recycling, and disposal documentation?
A.1 year
B.3 years
C.5 years
D.10 years
Explanation: EPA requires that refrigerant-handling records — including recovery during disposal, technician certification copies kept by distributors, and service records for leaking appliances — be maintained for at least 3 years and kept accessible at the site or business address.
9A worker registered in a U.S. Department of Labor apprenticeship program who is closely and continually supervised by a certified technician:
A.May never handle refrigerant
B.May handle refrigerant while closely supervised by a certified tech
C.Must pass the Universal exam within 30 days
D.Is automatically certified Type I
Explanation: An apprentice formally enrolled in a DOL/state-recognized apprenticeship program is exempt from holding their own certification while closely and continually supervised by a certified technician. This exemption lets trainees gain hands-on experience before testing.
10Which statement about the Section 608 venting prohibition is correct?
A.Only CFCs and HCFCs are covered; venting HFCs remains legal
B.Venting CFCs, HCFCs, and HFC substitutes during service is prohibited
C.Releases under one pound are always exempt from the venting ban
D.Venting is allowed if the technician recovers refrigerant afterward
Explanation: Since 1995 the venting prohibition has covered CFCs and HCFCs, and EPA extended it to non-exempt HFC substitutes effective 2016. Knowingly releasing these refrigerants during maintenance, service, repair, or disposal is illegal.

About the EPA 608 Universal Exam

The EPA Section 608 Universal certification authorizes technicians to service all stationary refrigeration and air-conditioning equipment. It combines a Core section with Type I (small appliances), Type II (medium- through very-high-pressure), and Type III (low-pressure) sections, for 100 multiple-choice questions, and requires 70% on each closed-book, proctored section to pass. The certification does not expire.

Assessment

100 multiple-choice questions: 25 each for Core, Type I, Type II, and Type III. Universal requires passing all four in a closed-book, proctored administration; an open-book Core cannot be carried into Universal. This practice bank mirrors the four-section structure.

Time Limit

No fixed federal time limit; typically 1.5-3 hours depending on the provider

Passing Score

70% on each closed-book, proctored section for Universal. A mail-in/open-book Type I route requires 84% but cannot be combined into Universal.

Exam Fee

Set by the EPA-approved testing organization; verify current fee (U.S. Environmental Protection Agency (EPA) via approved certifying organizations)

EPA 608 Universal Exam Content Outline

25%

Core (CAA, Ozone, Three R's, Regulations & Safety)

Clean Air Act and Montreal Protocol, ozone depletion and GWP, the three R's, venting prohibition, sales restriction, recordkeeping, cylinder handling, and refrigerant safety

25%

Type I (Small Appliances)

Sealed appliances of 5 lb or less; system-dependent vs self-contained recovery, 80%/90% and 4 in Hg requirements, sealed-system access, and disposal documentation

25%

Type II (High-Pressure)

High-pressure appliances; 0 and 10 in Hg evacuation levels, 10%/20%/30% leak-repair thresholds, deep evacuation, charging, and large-charge recovery

25%

Type III (Low-Pressure)

Low-pressure centrifugal chillers; 25 mm Hg absolute evacuation, 10 psig leak-test limit, rupture discs, purge units, and freeze protection during recovery

How to Pass the EPA 608 Universal Exam

What You Need to Know

  • Passing score: 70% on each closed-book, proctored section for Universal. A mail-in/open-book Type I route requires 84% but cannot be combined into Universal.
  • Assessment: 100 multiple-choice questions: 25 each for Core, Type I, Type II, and Type III. Universal requires passing all four in a closed-book, proctored administration; an open-book Core cannot be carried into Universal. This practice bank mirrors the four-section structure.
  • Time limit: No fixed federal time limit; typically 1.5-3 hours depending on the provider
  • Exam fee: Set by the EPA-approved testing organization; verify current fee

Keys to Passing

  • Work through all 120 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

EPA 608 Universal Study Tips from Top Performers

1Memorize the recovery and evacuation values cold: small appliance 80% (compressor off) / 90% or 4 in Hg (compressor on); post-1993 high-pressure under 200 lb = 0 in Hg and 200+ lb = 10 in Hg, while pre-1993 equipment uses 4 in Hg at 200+ lb; low-pressure = 25 mm Hg absolute
2Separate the leak frameworks: Part 82 uses 50+ lb of ozone-depleting refrigerant with 10%/20%/30% sector triggers; Part 84 applies from January 1, 2026 to covered 15+ lb HFC or substitute appliances with GWP above 53, subject to sector exclusions such as residential and light-commercial AC and heat pumps
3Remember that Universal requires all four sections closed-book and proctored; a mail-in/open-book Type I route requires 84% and its open-book Core cannot count toward Universal
4Distinguish CFCs (ODP ~1.0), HCFCs (low ODP, being phased out), and HFCs (zero ODP, high GWP, AIM Act phasedown)
5Remember the low-pressure trap: 25 mm Hg ABSOLUTE for both pre- and post-1993 recovery equipment, not 25 inches Hg vacuum; the leak-test pressure limit is 10 psig (rupture disc at 15 psig)
6Keep records for 3 years and remember the sales restriction limits refrigerant purchase to certified technicians
7Complete all 100 practice questions and review every miss with the AI tutor before sitting the exam

Frequently Asked Questions

How many questions are on the EPA 608 Universal exam and how is it structured?

The Universal exam has 100 multiple-choice questions: 25 each for Core, Type I, Type II, and Type III. All four must be passed under closed-book, proctored conditions; an open-book Core result cannot be used for Universal.

What score do I need to pass the EPA 608 Universal exam?

The standard minimum is 70% on each closed-book, proctored section. The separate mail-in/open-book Type I route requires 84%, but that route cannot be combined with other section results to earn Universal.

Does the EPA 608 certification expire?

No. EPA Section 608 certification is valid for the technician's lifetime and does not require renewal. Once you pass, you remain certified at the level you earned.

What is the difference between Type I, II, III, and Universal?

Type I covers factory-sealed small appliances with 5 lb or less of refrigerant, Type II covers medium-, high-, and very-high-pressure appliances, and Type III covers low-pressure appliances. Universal combines Core with all three types for stationary-equipment work.

How much does the EPA 608 exam cost and where do I take it?

Fees and scheduling are set by the EPA-approved certifying organization. Universal must be closed-book and proctored; some approved providers offer remote proctoring, so verify the current delivery rules directly with the provider.

Is this free EPA 608 Universal practice as good as paid prep?

Our 100 practice questions cover the same Core, Type I, Type II, and Type III content as the official exam, with a teaching explanation for every answer plus free daily AI tutor interactions. All content is free forever and updated for 2026.