Free EPA 608 Type 3 Practice Test Online

Official exam: EPA 608 Type III

Take a free EPA 608 Type 3 practice test online: a full 50-question paper with every answer explained, 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 Type III: a 140-question practice bank for the real EPA Environmental standard, 2 full papers of 50 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.

Take a full practice test free. 50 real questions built to the exam's domain weights, every answer explained, no sign-up required, with a domain-by-domain score at the end.

Start diagnostic

Want the whole bank for EPA 608 Type III? 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

2

full papers, no repeats

50

questions per paper

140

questions in the bank

What this exam covers

Core (all technicians)50%
Type III — Low-Pressure Appliances50%

5 real sample questions

A refrigerant has a liquid-phase saturation pressure of 200 psia at 104°F. Which appliance pressure classification does this fall into?

A. High-pressure (170–355 psia)

B. Medium-pressure (45–170 psia)

C. Low-pressure (below 45 psia)

D. Very high-pressure by pressure alone (above 355 psia)

Show answer and reasoning

Correct answer: A. High-pressure (170–355 psia)

B: 200 psia exceeds the 45–170 psia medium-pressure range.
C: 200 psia is far above the below-45-psia low-pressure threshold.
D: 200 psia is below the 355 psia threshold for the pressure-based very high-pressure test.

Source: 40 CFR 82.152

A refrigerant has a liquid-phase saturation pressure of 100 psia at 104°F. Which appliance pressure classification does this fall into?

A. Medium-pressure (45–170 psia)

B. High-pressure (170–355 psia)

C. Low-pressure (below 45 psia)

D. Very high-pressure (above 355 psia)

Show answer and reasoning

Correct answer: A. Medium-pressure (45–170 psia)

B: 100 psia is below the 170 psia lower boundary of the high-pressure range.
C: 100 psia is well above the below-45-psia low-pressure threshold.
D: 100 psia is far below the 355 psia threshold for very high-pressure classification.

Source: 40 CFR 82.152

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

To whom may refrigerant requiring Section 608 certification generally be sold?

A. Only to technicians who hold the appropriate Section 608 certification

B. To any adult with a valid driver's license

C. To any HVAC business, regardless of individual technician certification

D. To anyone who signs a liability waiver

Show answer and reasoning

Correct answer: A. Only to technicians who hold the appropriate Section 608 certification

B: A driver's license has no bearing on refrigerant purchase eligibility.
C: A business being HVAC-related does not substitute for the individual purchaser holding certification.
D: A liability waiver does not satisfy the federal certification requirement for purchase.

Source: 40 CFR Part 82, Subpart F (sales restriction)

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 Type 3 practice test online?

Right here. CertQuestUSA's free EPA 608 Type 3 practice test online is a full 50-question practice paper built to the real exam's domain weights, with every answer explained, 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 Type III practice test?

140 questions total, split into 2 full papers of 50 each with no repeats across papers.

What topics does the EPA 608 Type III test cover?

2 domains, with the heaviest weight on Core (all technicians) (50%), and Type III — Low-Pressure Appliances (50%).

Where do CertQuestUSA's EPA 608 Type III 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 EPA 608 Type III practice test?

Yes -- one full 50-question practice paper built to the exam's domain weights, free with no sign-up, with every answer explained and a domain-by-domain score at the end.