EPA 608 Practice Test: HVAC

Pass EPA 608. An offline EPA 608 practice test app for HVAC technicians: hundreds of questions with clear explanations, and timed mock exams built to the real Section 608 format.

Studying for your refrigerant certification? Take an EPA 608 practice test in ten minutes — no account, no signal needed.

❄️ EVERY SECTION OF THE EXAM
• EPA 608 Core — the Core exam section every certification type requires
• Type I — small appliances, sealed units with 5 lb of refrigerant or less
• Type II — high-pressure: split systems, heat pumps, supermarket racks
• Type III — low-pressure: centrifugal chillers and their recovery rules
• HVAC Fundamentals — the refrigeration cycle, airflow and electrical basics
📋 MOCKS BUILT TO THE REAL FORMAT
The federal rule builds every test as 25 Core questions plus 25 for each technical type, so that is exactly how the mock exams here are built: 50 questions for a single type, 100 for the full Universal certification sitting. Timed, graded instantly, with full answer review.

✅ EVERY SECTION SCORED ON ITS OWN
Each section is graded on its own at 70%. The federal rule sets a single 70% pass mark; certifying organizations typically administer and score Core and your technical type separately, so this app does too — you always know which one still needs work.

🔧 TYPE I, TYPE II, TYPE III AND UNIVERSAL
Pick the certification you actually need at first run and the app orders itself around it. Going for Universal? Sit the full 100-question composite covering Core plus all three types. Every question cites the source it comes from with its explanation; for regulatory questions that is the exact CFR section.

🧠 SMART REVIEW REMEMBERS YOUR MISSES
A five-box spaced-repetition system brings each question back right before you would forget it, and anything you miss jumps the queue with its explanation.

🎯 KNOW WHEN YOU ARE READY
Set your test date and the home screen shows a countdown beside your best mock score. The readiness gauge blends deck mastery with your best sitting, scoped to your chosen certification.

👷 WHO IT IS FOR
HVAC apprentices and technicians, refrigeration and appliance techs, trade-school students and facilities staff — sitting the EPA 608 exam for the first time or adding another type. HVAC test prep for the Core exam and every type, whether you need Type I only or full Universal certification.

📵 OFFLINE, PRIVATE, NO ACCOUNT
Free download, no sign-up, no email, no ads. The whole app works with no signal — study in the truck, in a mechanical room, or on a break. Your progress stays on your phone and never leaves it.

ℹ️ NOT AFFILIATED WITH ANY AGENCY
An independent study aid. Not affiliated with, endorsed by, or approved by the U.S. Environmental Protection Agency (EPA) or any EPA-approved certifying organization. The exam itself is administered by EPA-approved certifying organizations, which set their own scheduling and fees. Practice scores are an estimate, not a guarantee.

📚 OFFICIAL SOURCES — THE COMPLETE LIST
Every question is written from these official government publications — plus standard, non-proprietary physics — and no others:
• 40 CFR Part 82, Subpart F — the federal refrigerant regulation: https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-82/subpart-F
• EPA, Section 608 of the Clean Air Act: https://www.epa.gov/section608
• EPA, Section 608 Technician Certification Requirements: https://www.epa.gov/section608/section-608-technician-certification-requirements
• U.S. Department of Energy, Energy Saver 101: Home Cooling: https://www.energy.gov/sites/prod/files/2016/11/f34/HomeCooling101.pdf
• U.S. Department of Energy, Energy Saver Guide 2022: https://www.energy.gov/sites/default/files/2022-08/energy-saver-guide-2022.pdf
• U.S. Department of Energy, Pump Up Your Savings with Heat Pumps: https://www.energy.gov/articles/pump-your-savings-heat-pumps

Download the EPA 608 practice test app — HVAC test prep that walks you into your refrigerant certification ready.