The EPA 608 exam is administered by approved private testing organizations including ESCO Institute, Mainstream Engineering, HVAC Excellence, and SkillCat. Requirements differ slightly by format: onsite at an HVAC wholesale location, online proctored, or (for Type I only) open book mail in. This checklist covers both common formats. If you still need to book one, find a test location near you.

Night before checklist

Night before, both formats
  • Review your cheat sheet numbers: passing score (72 percent), key dates, recovery thresholds
  • Do 10 to 15 warm up practice questions, no heavy cramming
  • Confirm your exam appointment time and location (or login URL for online)
  • Locate your government issued photo ID (driver license, passport, or state ID)
  • Get a full night of sleep. Fatigue impairs recall more than any knowledge gap
Night before, online exam only
  • Log into the testing platform and verify your account works
  • Test your webcam: open your camera app to confirm the video is clear and well lit
  • Test your internet: run a speed test (5 Mbps minimum recommended)
  • Identify the room you will use: quiet, private, well lit, with no windows behind you
  • Save the provider technical support phone number from your confirmation email
  • Close unnecessary apps and browser tabs on your test computer

Morning of the exam

Morning of, onsite
  • Eat a normal breakfast (low blood sugar impairs concentration)
  • Bring your government issued photo ID
  • Arrive 10 to 15 minutes early. Late arrivals may forfeit their slot without refund
  • Leave your phone in the car or bag before entering the testing area
  • Know the exact address. Wholesale locations (Johnstone Supply, Ferguson, Wesco) can have several nearby branches
Morning of, online
  • Eat a normal breakfast
  • Log in 15 minutes before your scheduled start time
  • Have your government issued photo ID within reach for identity verification
  • Clear your desk completely: no paper, no notes, no books
  • Close all browser tabs except the exam platform
  • Put your phone in another room, or at minimum out of webcam view
  • Remove your smartwatch. It is treated as a prohibited device in most proctored exams
  • Keep your room quiet so roommates, family, and pets cannot interrupt

What to bring to the EPA 608 exam

One item is mandatory everywhere: a government issued photo ID. Everything else depends on your provider and format.

Bring, both formats
  • Government issued photo ID (driver license, passport, or state ID)
  • Your registration or confirmation email (printed or on your phone, kept outside the testing area)
Ask your provider first, allowed at some proctored sessions
  • One piece of blank scratch paper
  • A pressure-temperature (P-T) chart
  • A basic four-function calculator

Provider rules genuinely differ here. ESCO affiliated proctored sessions list scratch paper, a P-T chart, and a four-function calculator as permitted items, while other providers seat you with nothing but your ID. One email to your provider settles it, so send it before exam day rather than arguing at the desk.

What is prohibited

The following items are not permitted at your workstation during any closed book proctored EPA 608 exam. See the full EPA 608 exam rules for the complete policy.

Prohibited, both formats
  • Notes, study guides, or flashcards
  • Textbooks or printed reference materials
  • Smartphones or tablets (even face down)
  • Smartwatches or other wearable devices
  • Calculators your provider has not approved (most EPA 608 questions need no calculation; see what to bring above)
  • Headphones or earbuds (unless required for a disability accommodation)

Type I open book exception

The Type I section may be offered as an open book mail in exam by some providers. Notes and reference materials are allowed in that format only. The open book format uses a higher passing threshold: 84 percent (21 of 25) instead of 72 percent (18 of 25). Confirm your exam format with your provider before exam day.

What happens during the exam

Onsite: a proctor monitors the room. You are directed to your seat, asked to show your ID, and told the rules. The exam is paper based or computer based depending on the location. Results for computer based administration may be immediate. Paper based results arrive by mail in 2 to 4 weeks.

Online proctored: after login, you complete identity verification (show your ID to the webcam), then perform a 360 degree room scan showing all walls and your desk surface. The proctor monitors your webcam throughout. Your score is typically displayed right after submission.

Plan for no breaks. Most proctored sessions run straight through, commonly with a 2 hour ceiling, and leaving the camera view can void your attempt. Use the restroom before you start, skip the extra coffee, and expect small conduct rules like no hats and no talking except to the proctor.

For a detailed walkthrough of the online proctored process, see our EPA 608 exam day guide.

Frequently asked questions

What do I need to bring to the EPA 608 exam?
A government issued photo ID. For online exams: a working webcam and a private, quiet space. Nothing else is permitted at your workstation during a closed book proctored exam.
What is prohibited at the EPA 608 exam?
Notes, study materials, phones, tablets, smartwatches, and unauthorized reference materials are all prohibited. Online exams also require a clear desk and a room without interruptions.
What should I do the night before the EPA 608 exam?
Prepare your ID, confirm your test location or login URL, do a brief cheat sheet review, and get a full night of sleep. Do not cram. Your brain consolidates memory during sleep and fatigue impairs recall.
Can I use notes during the EPA 608 exam?
No. All proctored exams are closed book. The only exception is the Type I open book mail in format, which uses a higher 84 percent passing threshold. Confirm your format with your provider.
Can I bring a calculator to the EPA 608 exam?
It depends on the provider. Some proctored sessions, including ESCO affiliated ones, permit a basic four-function calculator along with scratch paper and a P-T chart. Others allow nothing at your seat. Most EPA 608 questions need no calculation, so confirm with your provider and do not count on it.
Can I take a break during the EPA 608 exam?
Usually not. Most proctored sessions run straight through with no breaks, and stepping out of camera view during an online exam can void your attempt. Use the restroom before you start.

Do one full rehearsal before exam day

Run 25 timed questions with no notes, the same way the real section works, then check your work against a full practice test with answers. Walking in calm beats walking in cold.

Take a timed practice exam Full exam day guide

Part of the EPA 608 certification guide

This page is part of our complete step by step EPA 608 certification guide, covering registration, provider choice, study strategy, and what to do on exam day.