What is EPA 608 certification?

Think of the 608 card as a license to open a refrigerant circuit. Without it, a tech can't legally put gauges on a condenser, add refrigerant or recover a system, and can't buy refrigerant at the supply house. It's a one-time test, it covers every refrigerant a residential tech is likely to touch, including the new A2Ls, and it's usually the first credential a new HVAC hire earns. Our full EPA 608 guide goes deep on test scoring, evacuation levels and record-keeping; this page is the short version.

What is EPA 608 certification in plain English?

Section 608 of the Clean Air Act makes it illegal to knowingly vent refrigerant from stationary equipment, and EPA's rules in 40 CFR Part 82, Subpart F require the people who work on that equipment to prove they know how to handle refrigerant safely¹. "Stationary" means anything that isn't a vehicle: a window unit, a residential split system, a walk-in cooler, a chiller.

The rule in 40 CFR 82.161 is broad. It applies to anyone who could reasonably be expected to violate the integrity of the refrigerant circuit while maintaining, servicing, repairing or disposing of an appliance¹. EPA's guidance includes attaching and detaching hoses and gauges to read pressures². So a tech doing a "quick pressure check" on a maintenance visit needs the card too.

Since January 1, 2018, the requirement covers non-exempt substitute refrigerants as well as ozone-depleting ones¹. That means R-410A, R-454B and R-32 work all falls under the same 608 card. There's no separate federal A2L certification; see what an A2L refrigerant is for why the new refrigerants still need extra training.

What are the four EPA 608 types?

Universal is all three. Most employers expect it because a tech running service calls can't predict whether the next ticket is a dehumidifier, a heat pump or a rooftop unit.

How do you get EPA 608 certified?

EPA writes the question bank, but it doesn't test anyone or issue cards. Approved certifying programs do³.

1. 1

   Pick an approved program

   Use EPA's list of approved certifying programs. Trade schools, supply houses and trade associations run many proctored sessions, and many programs offer remote proctoring.

2. 2

   Study the core plus your types

   Every test has a 25-question core section on rules, the environment and safety, plus 25 questions for each type. Universal is 100 questions in total.

3. 3

   Pass a proctored, closed-book test

   The passing score is 70 percent. A mail-in Type I test needs 84 percent and can't count toward Universal.

4. 4

   Get your card

   Programs must issue a wallet card within 30 days of the test. Keep a copy at your place of business.

Fees are set by each program, not by EPA, so prices vary by format and whether training is bundled². Test structure and scoring come from Appendix D of Subpart F⁴.

Does EPA 608 certification expire?

No. EPA says Section 608 technician certification credentials do not expire². That's different from most trade credentials. For comparison, a NATE certification must be renewed every two years with 16 hours of continuing education or a retest⁵.

The 609 row is included because people mix them up. A 609 card covers only motor vehicle AC refrigerant⁶. NATE certification is a separate, voluntary credential that tests broader HVAC knowledge.

What can you do with a 608 card?

• Open refrigerant circuits on the appliance types you're certified for¹.
• Buy refrigerant for stationary equipment. An employer can also buy if it shows the wholesaler written evidence that it employs at least one properly certified tech⁶. Pre-charged equipment and components aren't covered by the sales restriction.
• Supervise apprentices. An uncertified apprentice can work on a circuit only under close and continual supervision, and both the supervisor and the apprentice are responsible for compliance¹.

What changed for 608 techs in 2026?

The certification itself didn't change. What changed is the paperwork on some commercial equipment. Since January 1, 2026, EPA's HFC leak repair rule at 40 CFR 84.106 covers appliances with 15 pounds or more of an HFC or a substitute with a GWP above 53. It requires a certified tech to find and repair leaks and to do the verification tests⁷. The rule excludes the residential and light commercial AC and heat pump subsector, so day-to-day residential service is unaffected. The rule comes from the AIM Act; see how refrigerant leak rate is calculated for the math.

The last two points are where most shops slip. Since January 1, 2018, certifying programs (other than federal ones) must publish online lists of techs they certified on or after January 1, 2017, unless the tech opted out, which makes checking a new hire quick¹.

How TradesWork handles 608 cards

TradesWork stores each tech's certifications by type and number and checks the appliance category on every refrigerant entry. If someone logs refrigerant without a 608 card on file, or with the wrong type, the entry is flagged as a certification exception rather than blocked, so the refrigerant record is never lost. On the dispatch board, job types can require a certification, and an assignment to a tech whose matching certification has expired is refused. More in warranty and refrigerant tracking.