FREE EPA 609 MVAC Certification Exam Guide 2026: Real Provider Formats, $20-$90 Fees, Lifetime Cert (Practice)

EPA 609 MVAC Certification Exam Guide 2026: The Rule, the Real Exam Formats, and What Changed for 2026

EPA Section 609 certification is the federal credential required of anyone who repairs or services a Motor Vehicle Air Conditioning (MVAC) system for consideration — that is, for payment or barter. The requirement comes from Section 609 of the Clean Air Act and is implemented at 40 CFR Part 82, Subpart B. The rule is short, the credential is cheap, and it never expires.

Almost every guide on the internet then tells you the same three numbers: 25 questions, 84% to pass, $20. Those numbers describe one provider's exam. They are not the federal standard, and if you register with a different EPA-approved program you will sit a different test.

Here is what the regulation actually says. 40 CFR 82.40 requires an approved program to deliver training, to cover four specified subject areas on its test, to grade honestly, and to issue proof of certification with a unique number. It sets no question count, no time limit, and no passing score. Each approved program writes its own exam. In practice that produces real differences:

• MACS — 25 questions, 21 correct (84%), $29
• ESCO Institute — 50 questions, 42 correct (84%), $20 per attempt
• ASE — 30 questions, 24 correct (80%), $23 online

This guide is built from the regulation itself (40 CFR 82.30-82.42), EPA's current program list, each provider's published exam terms, and the 2024-2026 AIM Act rules that now sit on top of Section 609. Every number below is sourced. Start free practice whenever you are ready.

EPA 609 MVAC Certification At-a-Glance (2026)

Sources: 40 CFR 82.32-82.42 (eCFR, current as of 2026-07-31); EPA Section 609 Technician Training and Certification Programs page; MACS, ESCO, ASE and Mainstream Engineering published exam terms.

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The Exam Is Set by Your Provider — Not by EPA

This is the single most misreported fact about Section 609, and it decides which program you should register with.

What EPA requires of every approved program (40 CFR 82.40)

Those four content areas are the real blueprint. There are no percentage weightings in the rule — any guide that publishes a "15-20% / 25-30%" domain table for Section 609 invented it.

2026 provider comparison — the exam you sit depends on who you pay

The practical takeaway. If you want the cheapest single attempt, ESCO is $20 — but a fail costs another $20 and you face 50 questions. If you want the shortest test with a free manual, MACS is 25 questions for $29. If you are unsure you will pass first time, an unlimited-attempt provider is cheaper than two paid attempts anywhere else. And ASE is the only one of the four that passes you at 80% rather than 84%.

A credential is a credential. EPA does not rank approved programs. A card from any of the 23 approved programs is equally valid nationwide, and refrigerant retailers must accept it.

Who Must Be Certified — and the Two Cases Everyone Gets Wrong

40 CFR 82.34(a) is the operative prohibition. No person repairing or servicing MVACs for consideration, and no person repairing or servicing MVAC-like appliances, may perform any service involving refrigerant without approved equipment and proper certification.

Two details in that sentence matter enormously.

1. "For consideration" only limits the MVAC half

Service for consideration is defined at 82.32(g) as being paid to perform service, "whether it is in cash, credit, goods, or services. This includes all service except that done for free." So servicing your own car in your own driveway is not covered by the certification mandate — though you still cannot buy refrigerant in containers over two pounds, and you still cannot vent.

For MVAC-like appliances, the "for consideration" qualifier is absent. EPA's program page states it plainly: "All technicians servicing MVAC-like appliances must be certified." In-house farm shops and municipal fleet garages are covered even when nobody is being billed.

2. MVAC-like appliances: off-road equipment, and you get a choice of credential

An MVAC-like appliance (40 CFR 82.152) is "a mechanical vapor compression, open-drive compressor appliance with a full charge of 20 pounds or less of refrigerant used to cool the driver's or passenger's compartment of off-road vehicles or equipment. This includes, but is not limited to, the air-conditioning equipment found on agricultural or construction vehicles. This definition is not intended to cover appliances using R-22 refrigerant."

Per EPA's Section 608 / Section 609 overlap guidance, people who service MVAC-like appliances may choose either Section 609 certification or Section 608 Type II — and EPA recommends Section 609 because of the similarity to motor vehicle work.

The bus rule that trips people up

Buses are not automatically Section 609. EPA's guidance draws the line by refrigerant, not by vehicle:

• Buses using CFC-12 (R-12) are MVACs — Section 609.
• Buses using HCFC-22 (R-22) are neither MVACs nor MVAC-like appliances. They are high-pressure equipment covered by Section 608 Type II.

The R-22 carve-out is written into the MVAC-like definition itself, so the same logic applies to off-road equipment: an R-22 machine is 608 territory.

"Top-off only" shops are still regulated

40 CFR 82.32(e)(4) closes the loophole directly. Facilities that charge MVACs or MVAC-like appliances but perform no other refrigerant service — that is, top-offs only — are engaged in "service involving refrigerant." For MVACs that includes the obligation to purchase approved recovery/recycling equipment. And per 82.32(e)(5), everyone who opens an MVAC-like appliance must keep at least one piece of approved recovery or recycling equipment at their place of business.

Who this covers in practice

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Buying Refrigerant: The Sales Restriction Almost Every Guide Reports Wrong

There are two sales restrictions, they live in different subparts, and they use different thresholds.

Restriction 1 — ozone-depleting refrigerant, under 20 pounds (Subpart B)

40 CFR 82.34(b), effective November 15, 1992: no person may sell or distribute any class I or class II substance suitable for use as an MVAC refrigerant in a container holding less than 20 pounds to anyone who is not certified under 82.40 — unless the buyer certifies in writing that the containers are for resale only.

40 CFR 82.42(b)(3) puts the burden on the seller: verify certification, have a reasonable basis for believing the buyer's information is accurate, and keep the records for three years.

40 CFR 82.42(c) adds a public-notification duty. Any retailer selling class I or class II MVAC refrigerant in containers under 20 pounds must prominently display a sign reading: "It is a violation of federal law to sell containers of Class I and Class II refrigerant of less than 20 pounds of such refrigerant to anyone who is not properly trained and certified to operate approved refrigerant recycling equipment."

Restriction 2 — substitutes such as R-134a and R-1234yf, over two pounds (Subpart F)

The rule that governs modern refrigerant is 40 CFR 82.154(c), under Section 608 — not Section 609. Since January 1, 2018, the sales restriction extends to non-exempt substitutes including HFCs and HFOs. In practice: a container of R-134a or R-1234yf larger than two pounds requires certification to buy.

The small-can exemption is alive, and it did not get repealed

40 CFR 82.154(c)(1)(ix) exempts a container of non-exempt substitute refrigerant intended for MVAC use that holds two pounds or less, has a unique fitting, and — if manufactured or imported on or after January 1, 2018 — has a compliant self-sealing valve. EPA's own sales-restriction page confirms it: small cans with unique fittings and self-sealing valves "can continue to be sold to persons without certification for DIY use on their vehicles."

The valve spec at 82.154(c)(2) is precise: a single self-sealing valve that automatically closes when not dispensing, with a leakage rate not exceeding 3.00 grams per year when closed, measured per Appendix E, and applying to partially full containers as well as new full ones.

One more limit: a 609 card is not a universal refrigerant license

Per EPA's overlap guidance, Section 609 certification authorizes purchase of CFC-12 and EPA-approved MVAC substitutes. Section 609 technicians cannot purchase HCFC-22 in any size container, and cannot buy refrigerant intended for stationary equipment regardless of container size. That takes a Section 608 card.

Recordkeeping applies to sellers and to shops

• Sellers of class I/II refrigerant and, since January 1, 2018, non-exempt substitutes must keep invoices showing purchaser name, date of sale and quantity — three years (82.154(c)(3)). Where the buyer is an employer of a certified technician, the seller keeps that employment documentation.
• Shops owning approved recycling equipment must keep the name and address of any facility refrigerant is sent to, and records proving every authorized operator is currently certified (82.42(b)(1)-(2)). Entities servicing MVACs for consideration must keep these records on-site and grant EPA representatives access (82.42(b)(4)-(5)).
• Used refrigerant may not be resold under 82.154(d) unless it has been reclaimed by a certified reclaimer — with an explicit carve-out for refrigerant recovered from an MVAC or MVAC-like appliance that will be recycled and used again in an MVAC or MVAC-like appliance.

What the states actually do (and do not) require

Two state programs get misdescribed constantly. Neither imposes a certification requirement on small-can buyers.

• California. CARB's Small Containers of Automotive Refrigerant regulation (Cal. Code Regs. tit. 17) took effect January 1, 2010 and was amended April 13, 2017 and July 1, 2024. It regulates the product: manufacturers must obtain a CARB Executive Order to sell in California, cans must have self-sealing valves and specified labeling, and a DIY education component applies. The container deposit-and-return program ended January 1, 2025, and CARB has adopted a requirement that refrigerant sold in these containers be 100% reclaimed by 2027.
• Washington. Washington restricts small MVAC cans by global warming potential, not by certification. Low-GWP R-1234yf small cans may still be bought by consumers; R-134a small cans (GWP above 150) may not. Self-sealing valves are required.

Check your own state before assuming the federal baseline is the whole story.

The Complete EPA-Approved Provider List (2026)

EPA maintains the authoritative list at epa.gov/mvac/section-609-technician-training-and-certification-programs. As of August 2026 it names 23 programs open to the public:

AM General Corporation - ASE (National Institute for Automotive Service Excellence) - Boyd CAT (formerly Whayne Supply Company) - ComplyAuto - ComplyNet - ESCO Institute - Ferris State University - The Greater Cleveland Automobile Dealers' Association - KPA - Mainstream Engineering Corporation - Metro Atlanta Automobile Dealers Association - Mid-Atlantic Maritime Academy - Mobile Air Climate Systems Association (MACS) - National Fluid Power Institute - New York State Association of Service Stations and Repair Shops - SkillCat - Texas A&M Engineering Extension Service (TEEX) - Tier One EHS - The Training Center - Trade Masters Online - Union Pacific - Universal Technical Institute - Wyoming Technical Institute

A further eight programs certify only their own employees: Chicago Transit Authority, Jiffy Lube International, Los Angeles County Metropolitan Transportation Authority, two U.S. Air Force training centers, the U.S. Army Ordnance Mechanical Maintenance School, and two U.S. Marine Corps schools.

Legacy cards remain valid. EPA instructs refrigerant retailers to keep accepting cards from programs that no longer operate, including IMACA, the New York State DMV program, Penske Auto Centers, Snap-On, Ryder Trucks, Pennsylvania College of Technology and others. MACS holds IMACA's records; the New York State Association of Service Stations and Repair Shops holds the NYS DMV records. A 1994 card is still a valid 2026 card.

Naming note. The organization long known as MACS Worldwide or the Mobile Air Conditioning Society now appears on EPA's list as the Mobile Air Climate Systems Association (MACS). It is one organization, not two providers.

What the Exam Actually Tests

Refrigerants you must be able to identify

Flammability is regulated, not optional: it is illegal to use any refrigerant with flammable characteristics in an MVAC system except R-152a and R-1234yf. Hydrocarbon "drop-in" replacements sold online are not SNAP-listed for MVAC and are not legal.

Cylinder color is no longer an identification method

Older study material teaches "R-12 white, R-134a light sky blue, R-1234yf white with a red band." That was AHRI Guideline N before it was rewritten. Under the revised guideline, phased in from January 2020, all refrigerant containers other than recovered and recycled product carry one uniform paint color, RAL 7044 (silk grey). AHRI still assigns individual colors for printed materials only — labels and cartons — and flammable refrigerants still carry a red band on the shoulder or top of the container.

The practical rule: read the label and markings, not the paint. Guideline N is voluntary, so legacy-colored stock is still in circulation, which is exactly why color alone cannot be trusted.

Recovery, recycling and reclamation

Two MVAC-specific wrinkles the general definitions hide:

1. The Subpart F definition of "recycle" expressly applies to appliances except MVACs. MVAC recycling is governed by the Subpart B appendices instead.
2. 40 CFR 82.32(e)(2) requires refrigerant coming back from a reclamation facility for MVAC recharge to meet the purity standard codified in Subpart F Appendix A. Recovery-only equipment triggers a duty to recycle on-site or send the refrigerant off-site for reclamation.

Equipment standards: which SAE numbers are actually law

EPA incorporates a specific, short list of SAE standards by reference at 40 CFR 82.31, and 82.36(a) says which equipment must meet what. This is the part of the exam worth memorizing, because it is the part that is legally binding.

Note what is not on that list. J2845 (technician training), J639 (system safety and containment), J2888 (R-1234yf service hoses, fittings and couplers for service equipment), J2912 and J2927 (refrigerant identifiers), J2913 (R-1234yf electronic leak detectors), J2297 (UV dye criteria), J2099 (purity standard for recycled R-134a, R-1234yf and R-152a) and J1628 (electronic leak-detector procedure) are genuine SAE standards that shape shop practice and appear in provider manuals — but EPA does not incorporate them into 40 CFR 82.36. Knowing the difference is what separates a technician from someone who memorised a list.

Two frequently misattributed numbers, corrected: J2888 covers the hose, fitting and coupler hardware on the service equipment side, not the vehicle's service ports; and J1990, not J2099, is the CFC-12 extraction-and-recycle equipment standard.

What J2843 changed about recovering R-1234yf

Because R-1234yf is A2L, J2843 machines are engineered differently from J2788 machines: anti-arcing switches, motors and solenoids, and internal venting to clear any refrigerant vapor that accumulates inside the cabinet. J2843 also introduced a mandatory refrigerant identification step — the identifier is built in or the machine accepts an ID signal through a USB port, and if the charge is not sufficiently pure the machine will not permit recovery. Built-in identifiers must meet SAE J2927; external diagnostic identifiers must meet SAE J2912. Refrigerant flagged as contaminated has to go to a separate J2851 recovery-only machine.

Retrofit: the correct standard numbers

Retrofitting a CFC-12 vehicle to R-134a is covered by a family of SAE documents, and most guides cite the wrong one:

• SAE J1661 — Procedure for Retrofitting CFC-12 (R-12) Mobile Air-Conditioning Systems to HFC-134a (R-134a). Issued 1993, stabilized April 2011. This is the retrofit procedure.
• SAE J1660 — Fittings and Labels for Retrofit of CFC-12 Mobile Air-Conditioning Systems to HFC-134a. The hardware and labeling half of the job, not the procedure itself.
• SAE J1657 — Selection Criteria for Retrofit Refrigerants to Replace CFC-12.

The work itself: recover all R-12, change the lubricant to the specified PAG or POE oil, replace the filter-drier, fit unique R-134a service ports, label the system as converted, and charge to the adjusted specification. Simply topping off an un-retrofitted R-12 system with R-134a is illegal.

R-134a to R-1234yf retrofit is not an approved path. The SNAP listing for R-1234yf applies to systems designed for it, the fittings differ deliberately, and the safety engineering assumes A2L-rated components.

Leak detection, safety and A2L handling

• Electronic detectors. SAE J1628 sets the technician procedure; J2913 sets minimum performance criteria for R-1234yf detectors.
• Fluorescent UV dye. SAE J2297 governs stability and compatibility of dyes for R-134a and R-1234yf systems. Dye must run with the system before inspection.
• Soap solution and nitrogen pressure testing remain useful for accessible joints and pre-charge verification, and neither is sensitive enough for slow leaks on its own.
• PPE. Safety glasses and chemical-resistant gloves whenever the circuit is open. Liquid refrigerant flashes to vapor instantly and causes frostbite on contact.
• Oxygen displacement. Refrigerant vapor is denser than air and pools in pits, trenches and unventilated low spots. This hazard applies to non-flammable R-134a exactly as much as to R-1234yf.
• A2L handling. No open flame or spark sources near charging or recovery; J2843-compliant ignition-safe equipment; good ventilation, with vehicle windows and doors opened per J2845 guidance; and compliance with any local enclosed-bay leak-sensor requirement.
• Never vent. Knowing release of refrigerant during maintenance, service, repair or disposal is prohibited. De minimis releases associated with good-faith recovery practice are the only tolerance.

The 2024-2026 Rule Layer Most Guides Have Not Caught Up With

Section 609 itself has not been amended, but the AIM Act of 2020 and its implementing rules at 40 CFR Part 84 have changed the refrigerant landscape a Section 609 technician works in.

HFC phasedown schedule (42 U.S.C. 7675(e)(2); 40 CFR 84.7)

The commonly quoted "85% by 2036" is the final step, not today's. The step that will be felt hardest is 2029, when the cut jumps from 40% to 70%.

Technology Transitions: GWP limits on new MVACs (40 CFR 84.54(a)(13))

That third row is the one that matters if you work on MVAC-like appliances: the off-road equipment you service today is on a clock to move off R-134a.

Reclaimed refrigerant: a new content limit from January 1, 2026

Under EPA's Emissions Reduction and Reclamation program (40 CFR Part 84 Subpart C, finalized October 2024), effective January 1, 2026 no refrigerant may be sold, identified or reported as reclaimed if it contains more than 15% virgin regulated substance by weight. The reclamation definition you are tested on now has a purity dimension and a virgin-content dimension.

What did not change

EPA's Technology Transitions Reconsideration final rule, published May 26, 2026, extended installation deadlines and raised interim GWP limits for supermarket refrigeration, remote condensing units, cold storage warehouses and residential/light-commercial air conditioning. It did not change the motor vehicle air conditioning compliance dates, and it did not touch Section 609 technician certification, the sales restriction or the equipment standards. Likewise, the ER&R leak-repair and automatic-leak-detection requirements apply to stationary refrigerant-containing equipment, which Part 84 defines as equipment that is not an MVAC or MVAC-like appliance.

Penalties: The 2026 Numbers, Not the 2010 Ones

Nearly every Section 609 study manual in circulation still says $37,500 per day per violation. That figure has been superseded for a decade. Clean Air Act penalties are adjusted for inflation annually under the Federal Civil Penalties Inflation Adjustment Act Improvements Act of 2015 and published in 40 CFR 19.4.

Why there is no separate "2026 figure." The annual adjustment is calculated from the October Consumer Price Index for All Urban Consumers. Because the federal funding lapse in autumn 2025 meant the Bureau of Labor Statistics never published that data point, OMB directed agencies to skip the 2026 adjustment — the first time since 2016 that federal civil penalty maximums have not risen. The amounts above are therefore both the 2025 and the 2026 figures.

These are statutory ceilings, not the amount assessed in a typical case. EPA settlements for refrigerant violations range from five figures for a single shop to seven figures for a multi-site program — one scrap-metal recycler paid a $1,550,000 civil penalty plus over $1,700,000 in compliance measures across 40 facilities.

Losing the card is a real risk too. Under 40 CFR 82.40(f), EPA representatives may require a technician to demonstrate proper recovery and recycling procedures on the business premises. Failure to demonstrate, or failure to properly use the equipment, may result in revocation — and a technician whose certification is revoked must be recertified before servicing any MVAC again.

Cost and Registration

There is no renewal fee, no continuing education requirement and no recertification cycle at any provider, because the credential does not expire.

Lifetime Certification, With One Asterisk

Section 609 certification has no expiry date. There is no renewal, no CEU requirement and no fee after the initial exam. A card issued in 1994 is still valid in 2026, and EPA explicitly instructs retailers to accept cards from programs that have since shut down.

The asterisk is 40 CFR 82.40(d): "The Administrator reserves the right to specify the need for technician recertification at some future date, if necessary." EPA has never exercised that authority, but the rule keeps the door open — which is worth knowing before you tell a shop owner the credential is untouchable. The other route to losing it is revocation under 82.40(f) for failing an on-site demonstration, or enforcement action for fraud or gross violation.

Lost your card? Contact the program that issued it. If that program no longer exists, MACS holds IMACA's records and the New York State Association of Service Stations and Repair Shops holds the NYS DMV records.

Study Plan: 4 to 8 Hours, Matched to Your Provider

Because the exam is open-book and provider-written, the efficient strategy is to prepare against your provider's manual rather than a generic outline. Every major program gives its manual away free — download it before you pay for anything.

Technicians with automotive backgrounds routinely pass on 4 to 6 hours. Non-automotive candidates should budget 6 to 8 hours, mostly for the chemistry and the standards.

Test-Day Strategy for an Open-Book Exam

1. Know your format before you start. Twenty-five questions and fifty questions call for different pacing, and ASE's 80% threshold gives you six wrong answers where MACS gives you four.
2. Pre-read and tab the manual. The exam is open-book by design; the failure mode is not ignorance, it is hunting page by page under pressure.
3. Bookmark the tables, not the prose: refrigerant properties, equipment standard numbers, container thresholds, recordkeeping periods.
4. Answer definitional questions first, flag anything needing a lookup, then make one focused pass with the book.
5. Check the retake economics before you register. At ESCO a second attempt is another $20; at MACS you buy a new test; at SkillCat and The Training Center retakes are included. If you are not confident, buy unlimited attempts up front.
6. Aim well above the line. On a 25-question test at 84%, four wrong answers is the entire margin.

Common Pitfalls to Avoid

1. Assuming your provider's format is the federal format. EPA sets no question count and no passing score. Confirm the format on the page where you pay.
2. Believing small cans now require certification. They do not. Containers of two pounds or less with unique fittings and self-sealing valves are still sold to uncertified DIYers under 40 CFR 82.154(c)(1)(ix).
3. Quoting $37,500 per day. The current Clean Air Act maximum is $124,426 per day per violation under 40 CFR 19.4. Most study manuals still print the old number.
4. Treating every bus as a 609 job. A bus running R-22 is Section 608 Type II high-pressure equipment, not an MVAC.
5. Skipping certification for in-house farm and construction equipment. MVAC-like appliance service requires certification even when nobody is being paid.
6. Trusting cylinder color. Since 2020 AHRI Guideline N specifies one uniform container color, RAL 7044, with a red band only for flammables. Read the label.
7. Cross-charging R-134a and R-1234yf. The fittings differ deliberately. Adapting them is illegal and unsafe, and a J2843 machine will refuse recovery if the identifier flags contamination.
8. Running R-1234yf through an R-134a machine. J2788 equipment lacks the ignition-safe engineering J2843 requires for an A2L refrigerant.
9. Topping off an R-12 system with R-134a. Retrofit per SAE J1661, with J1660 fittings and labels, or leave it alone.
10. Assuming a 609 card buys anything. It does not authorize HCFC-22 in any container size, or any refrigerant intended for stationary equipment.

Career Value: A Gate, Not a Ladder

Section 609 is not a competence credential and it does not signal seniority. It is a legal gate: without it you cannot lawfully be paid to service an MVAC, you cannot service an MVAC-like appliance at all, and you cannot buy MVAC refrigerant in containers over two pounds. For a working technician the cost-to-necessity ratio is unmatched — $20 to $90, once, forever.

Where it becomes an advantage is in combination. Pair 609 with ASE A7 (Heating and Air Conditioning) and you hold both halves: A7 says you can diagnose and repair the system, 609 says you are legally allowed to open it. Adding Section 608 Type II extends you to R-22 buses, transport refrigeration and stationary work, which is exactly the boundary Section 609 alone cannot cross.

We do not publish a dollar figure for the A/C premium, because no public dataset isolates earnings by Section 609 status and the numbers circulating on other sites are not sourced. What is verifiable is the constraint: a shop with no certified technician cannot legally buy refrigerant inventory.

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Gotchas Competitor Guides Get Wrong

• "The EPA 609 exam is 25 questions and 84% to pass." That is MACS and Mainstream. ESCO is 50 questions; ASE is 30 questions at 80%. EPA sets neither number.
• "The small-can exemption was repealed." It was not. 40 CFR 82.154(c)(1)(ix) is current law and EPA's sales-restriction page confirms DIY sales continue.
• "California and Washington require certification regardless of can size." Neither does. California regulates the can (valve, labeling, CARB product certification, 100% reclaimed content by 2027); Washington restricts small cans above 150 GWP.
• "609 and 608 are interchangeable at the counter." They are not. A 609 technician cannot buy HCFC-22 in any size container or any refrigerant intended for stationary equipment.
• "All buses are 609." Buses running R-12 are MVACs; buses running R-22 are Section 608 Type II high-pressure equipment.
• "You only need 609 if you are paid." True for MVACs. False for MVAC-like appliances, where 40 CFR 82.34(a)(3) has no "for consideration" qualifier.
• "Section 609 expires after five years." It does not, and neither does Section 608. Only 40 CFR 82.40(d) leaves the door open to a future recertification requirement.
• "Retrofit is governed by SAE J1660." J1661 is the retrofit procedure; J1660 covers the fittings and labels; J1657 covers refrigerant selection.
• "Fines are $37,500 per day." $124,426 per day per violation, per 40 CFR 19.4. The 2026 inflation adjustment was cancelled, so the 2025 amounts carried over.

Official Sources Used

• 40 CFR Part 82, Subpart B — 82.31 (incorporation by reference), 82.32 (definitions), 82.34 (prohibitions and required practices), 82.36 (approved refrigerant handling equipment), 82.40 (technician training and certification), 82.42 (certification, recordkeeping and public notification). eCFR, current as of 2026-07-31.
• 40 CFR Part 82, Subpart F — 82.152 (definitions, including MVAC-like appliance and reclaim) and 82.154(c)-(d) (sales restriction, self-sealing valves, recordkeeping, used refrigerant).
• 40 CFR Part 84 — 84.7 (HFC phasedown schedule), 84.54(a)(13) (motor vehicle air conditioning GWP restrictions), Subpart C (Emissions Reduction and Reclamation).
• 40 CFR 19.4 — statutory civil monetary penalties as adjusted for inflation.
• EPA, "Section 609 Technician Training and Certification Programs" — the authoritative approved-provider list.
• EPA, "Section 608 and Section 609 Overlap" — MVAC-like appliances, bus refrigerant distinctions, purchase authority by certification type.
• EPA, "Refrigerant Sales Restriction" — small-can exemption and wholesaler responsibilities.
• EPA, "Technology Transitions HFC Restrictions by Sector" and Federal Register 2026-10387 (Technology Transitions Reconsideration, May 26, 2026).
• Provider exam terms — MACS, ESCO Institute, ASE, Mainstream Engineering, SkillCat and The Training Center published pages, checked August 2026.
• AHRI Guideline N, Assignment of Refrigerant Container Colors, as revised for uniform RAL 7044 containers phased in from January 2020.
• California Air Resources Board, Small Containers of Automotive Refrigerant regulation; Washington State Department of Ecology, small cans of refrigerant guidance.

Fees, provider formats and regulatory requirements change. Confirm current terms on epa.gov and with your chosen approved program before you pay.