Free EPA 608 Practice Test Online

Official exam: EPA 608 Universal

Take a free EPA 608 practice test online: 10 questions, no sign-up, scored by topic. The full 140-question bank and the timed simulator are $14.99 for 30 days.

First published: September 2, 2026Bank updated: September 2, 2026Published by CertQuestUSA · review process

TL;DR

EPA 608 Universal: a 140-question practice bank for the real EPA Environmental standard, 1 full paper of 100 questions each with no repeats, every question written to the regulation it comes from.

Where these questions come from

Every question in this bank cites a source -- primarily 40 CFR (100%) of this exam's citations.

Not sure where you stand? Take the free diagnostic, 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.

Start diagnostic

Want the whole bank for EPA 608 Universal? One payment of $14.99 gives you 30 days of full access to this exam. It does not renew. No account needed to buy, and there is a 7-day money-back guarantee.

Not ready yet? Take the free practice test first.

Ways to pay for the full bank

30-day pass

$14.99

about $15 a month

This exam only. Pays once, does not renew.

Monthly

$19.99

$19.99 a month

Every exam. Cancel any time.

Yearly

$143.93

about $11.99 a month

Every exam. Billed once a year.

Lifetime

$39.99

pay once

This exam only, no time limit.

See all plans and bundles

1

full paper

100

questions per paper

140

questions in the bank

What this exam covers

Core (all technicians)25%
Type I — Small Appliances25%
Type II — Medium/High-Pressure25%
Type III — Low-Pressure Appliances25%

5 real sample questions

Which class of refrigerants was the original driver behind the Montreal Protocol and the U.S. regulations that followed it?

A. Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs)

B. Ammonia-based refrigerants used in industrial process cooling

C. Carbon dioxide refrigerants used in transcritical systems

D. Water-based absorption refrigerants

Show answer and reasoning

Correct answer: A. Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs)

B: Ammonia is not chlorine-based and is not an ozone-depleting substance; it is regulated under different programs.
C: CO2 is not ozone-depleting and was never the driver behind the Montreal Protocol.
D: Absorption refrigerants using water are not the class of concern that led to Subpart F.

Source: 40 CFR 82.150

Which certification type is required to legally service a household refrigerator (a factory-sealed unit with a small refrigerant charge)?

A. Type I (or Universal, which includes Type I)

B. Type II only

C. Type III only

D. No certification is required for household refrigerators

Show answer and reasoning

Correct answer: A. Type I (or Universal, which includes Type I)

B: Type II covers medium/high/very high-pressure appliances, which excludes small appliances like household refrigerators.
C: Type III covers low-pressure appliances, not small factory-sealed appliances.
D: Certification is required by §82.161; there is no exemption for household refrigerators.

Source: 40 CFR 82.161(a)(1)

Why does the EPA regulate the handling of refrigerants under the Clean Air Act?

A. Refrigerants released to the atmosphere can deplete the stratospheric ozone layer or contribute to climate impact

B. Refrigerants are flammable and pose a fire code violation if not tracked

C. Refrigerant cylinders are considered hazardous waste containers under RCRA

D. Refrigerant sales generate excise tax revenue that must be reported to EPA

Show answer and reasoning

Correct answer: A. Refrigerants released to the atmosphere can deplete the stratospheric ozone layer or contribute to climate impact

B: Flammability is a separate safety concern from the ozone/climate rationale that actually underlies Subpart F.
C: Refrigerant cylinders are not regulated as RCRA hazardous waste containers under this program; the regulation is about emissions, not waste classification.
D: Subpart F is an emissions-reduction rule, not a tax-collection program.

Source: 40 CFR 82.150

Which certification is required to legally service a household window air conditioning unit?

A. Type I (or Universal, which includes Type I)

B. Type II only

C. Type III only

D. Reclaimer certification

Show answer and reasoning

Correct answer: A. Type I (or Universal, which includes Type I)

B: Type II covers medium/high/very high-pressure appliances, not small appliances like window units.
C: Type III covers low-pressure appliances, not small appliances like window units.
D: Reclaimer certification (§82.164) is for entities processing refrigerant to purity standards for resale, not for servicing appliances.

Source: 40 CFR 82.161(a)(1)

Which of the following is a very common example of equipment that typically falls under Type II certification in the field?

A. A residential split-system air conditioner or heat pump

B. A household refrigerator

C. A window air conditioning unit

D. A large industrial chiller using a low-pressure refrigerant

Show answer and reasoning

Correct answer: A. A residential split-system air conditioner or heat pump

B: A household refrigerator is a small appliance under Type I, not Type II.
C: A window air conditioning unit is a small appliance under Type I, not Type II.
D: A large industrial chiller using a low-pressure refrigerant is a Type III example, not Type II.

Source: 40 CFR 82.161(a)(1)

Real-world data for this exam

Heating, Air Conditioning, and Refrigeration Mechanics and Installers: real median wageMay 2025$61,010/yr

Frequently asked questions

Where can I take a free EPA 608 practice test online?

Right here. CertQuestUSA's free EPA 608 practice test online is a 10-question diagnostic across the exam's domains, with no sign-up and no credit card, and shows your score by topic at the end. The full 140-question bank, with every answer explained and cited to the regulation it comes from, is $14.99 for a 30-day pass that never renews.

How many questions are on the CertQuestUSA EPA 608 Universal practice test?

140 questions total, split into 1 full paper of 100 each with no repeats across papers.

What topics does the EPA 608 Universal test cover?

4 domains, with the heaviest weight on Core (all technicians) (25%), Type I — Small Appliances (25%), and Type II — Medium/High-Pressure (25%).

Where do CertQuestUSA's EPA 608 Universal questions come from?

Primarily 40 CFR (100%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.

Is there a free diagnostic for EPA 608 Universal?

Yes -- 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.