About HVACTechTest

Who runs this site

HVACTechTest is an independent study-resource publisher. We are not a school, not an exam provider, and not affiliated with the EPA or any certifying organization. The site is part of a small family of free career-prep resources that includes Trade Schools Review, Pharmacy Tech Test, and Free CNA Training, built on one idea: the information you need to start a skilled career should not sit behind a paywall or an email gate.

Everything here — the 105 practice questions and the certification guide — is free to use, with no signup and no credit card.

How our practice questions are written

Every question is original and written to the EPA Section 608 exam topic areas: the Core section's foundation material — ozone depletion, the Clean Air Act and Montreal Protocol, the venting prohibition, recovery/recycle/reclaim definitions, safety, and cylinder handling — plus the equipment-specific rules each Type section tests, from small-appliance evacuation to high-pressure leak rates to low-pressure chiller procedures. Before a question is published we check it three ways:

• The fact is verified against a primary source — the EPA's Section 608 regulations (40 CFR Part 82, Subpart F) and EPA.gov guidance for legal requirements, evacuation levels, and leak-rate thresholds, and current EPA rulemakings for the HFC phasedown and refrigerant transition.
• Exactly one answer is defensibly correct, and the distractors come from real confusions — adjacent evacuation levels, look-alike leak-rate percentages, the wrong pressure class for a refrigerant — because that is how the real exam tries to trip you up.
• Every question ships with a written explanation that teaches the rule — why the right answer is right and why the most tempting wrong answer is wrong — not just the letter to memorize.

When a rule changes — a phasedown step, a transition deadline, a handling requirement — we correct the affected questions rather than leaving stale content up.

How we source certification facts

Section 608 is federal, so there is one set of rules nationwide — and we take them from the source: EPA.gov's Section 608 pages, the regulations themselves, and the published materials of EPA-approved certifying organizations such as ESCO Institute and Mainstream Engineering. Facts that come from a provider — exam formats, fees, scheduling — are checked against that provider's own pages, with the date we accessed each one recorded in our research notes.

Just as important is what we don't do: where a provider does not publish a current fee or a detail cannot be confirmed from a primary source, we say so and point you to the provider — we never fill the gap with a guess. If anything on this site conflicts with EPA.gov or your certifying organization, trust them and tell us so we can fix it.

Corrections policy

Regulations change, and we would rather hear about an error twice than miss it once. If you spot anything wrong or out of date — a question, a fact, a broken link — email info@hvactechtest.org or use the contact page, and include the page URL. We review every report, correct confirmed errors, and update the affected page's review date.