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EPA 608 Technician Certification: Clean Air Act and Section 608 Rules Concepts

Importance ★★★★★ · 30% (estimate)

Overview

This chapter covers the laws behind Section 608. It explains the Montreal Protocol and the U.S. phaseout dates, the venting prohibition, who may buy refrigerant, when recovered refrigerant must be reclaimed, and which certification type each job needs. It ends with records, penalties, and the newer HFC leak repair rule.

The Montreal Protocol is the international treaty that phases out ozone-depleting substances. In the United States, production and import of CFCs ended on January 1, 1996, and production and import of R-22 ended in 2020. Existing refrigerant can still be used for service if it was made earlier or has been recovered and recycled or reclaimed.

No one may knowingly vent CFC, HCFC, or non-exempt substitute refrigerants such as HFCs while servicing or disposing of equipment. Only small de minimis releases during proper recovery are allowed. Refrigerant may be sold only to certified technicians or their employers, with a few exceptions such as small cans for car air conditioning. Used refrigerant sold to a new owner must be reclaimed by a certified reclaimer.

Type I covers small appliances, Type II covers high- and medium-pressure appliances, Type III covers low-pressure appliances, and Universal covers all three. Certification does not expire. Clean Air Act penalties are counted per day for each violation. Since January 1, 2026, a separate EPA rule (40 CFR Part 84) also requires leak repair on many appliances with 15 pounds or more of high-GWP HFC refrigerant.

Key concepts

  • Venting prohibition

    The rule that no one maintaining, servicing, repairing, or disposing of an appliance may knowingly release CFC, HCFC, or non-exempt substitute refrigerant into the air.

    Memory tipNo knowing release, at service or at disposal.

    Source: 40 CFR 82.154(a) (EPA Section 608 rules) · as of 2026

  • De minimis release

    A small release that happens during a good-faith attempt to recover refrigerant while following the required practices, such as when connecting or disconnecting hoses.

    Memory tipTiny and unavoidable is OK; on purpose is not.

    Source: 40 CFR 82.154(a)(2) (EPA Section 608 rules) · as of 2026

  • Sales restriction

    CFC, HCFC, and non-exempt substitute refrigerants may be sold only to certified technicians or to buyers who employ one, with exceptions such as MVAC cans of 2 pounds or less with a self-sealing valve.

    Memory tipNo card, no cylinder.

    Source: 40 CFR 82.154(c) (EPA Section 608 rules) · as of 2026

  • Phaseout dates

    Production and import of CFCs ended on January 1, 1996. Production and import of HCFC-22 (R-22) ended in 2020. All remaining HCFC production and import ends in 2030.

    Memory tipCFC 1996, R-22 2020.

    Source: EPA ODS phaseout pages (Clean Air Act Title VI) · as of 2026

  • Certification types

    Type I: small appliances. Type II: medium-, high-, and very high-pressure appliances. Type III: low-pressure appliances. Universal: all three. Certification does not expire.

    Memory tipI small, II high, III low.

    Source: 40 CFR 82.161 (EPA Section 608 rules) · as of 2026

  • Reclaimed refrigerant

    Refrigerant reprocessed to the purity specifications in Appendix A (based on AHRI Standard 700) and verified by analysis. Required before used refrigerant is sold to a new owner.

    Memory tipNew owner = reclaim first.

    Source: 40 CFR 82.152, 82.154(d) (EPA Section 608 rules) · as of 2026

  • HFC leak repair (Part 84)

    Since January 1, 2026, appliances with 15 pounds or more of refrigerant containing an HFC with a GWP above 53 must repair leaks above set rates. Residential and light commercial air conditioning is excluded.

    Memory tipPart 82: 50 lb ODS. Part 84: 15 lb HFC.

    Source: 40 CFR 84.106 (AIM Act Emissions Reduction and Reclamation rule) · as of 2026

Often tested

  • Venting CFCs, HCFCs, and HFCs during service or disposal is illegal.
  • Nitrogen, carbon dioxide, and water may be released.
  • Refrigerant can go back into the same owner's equipment without reclaiming.
  • Keep a copy of your certificate at your place of business.
  • Disposal records for appliances with more than 5 and less than 50 pounds: keep 3 years.
  • Clean Air Act penalties are counted per day, per violation.

3 sample questions

Verified practice questions from this unit.

Practice questionReviewedCore › Clean Air Act and Section 608 Rules★★★★★

Question 1. Under the Clean Air Act, which refrigerants may NOT be knowingly vented during service, repair, or disposal of an appliance?

  1. ① Only CFCs and HCFCs
  2. ② CFCs, HCFCs, and non-exempt substitutes such as HFCs
  3. ③ Only refrigerants in systems over 50 pounds
  4. ④ Only CFCs
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Answer: ② CFCs, HCFCs, and non-exempt substitutes such as HFCs

Key point: No venting of CFC, HCFC, or non-exempt HFC

40 CFR 82.154(a) says no one servicing, repairing, or disposing of an appliance may knowingly vent CFC, HCFC, or non-exempt substitute refrigerants such as HFCs. Only a short list of substitutes (for example CO2 or nitrogen, and some hydrocarbons in certain uses) is exempt.

Wrong choices

  • Only CFCs and HCFCs: Most substitutes such as HFCs are also covered.
  • Only refrigerants in systems over 50 pounds: The venting prohibition applies to appliances of every size.
  • Only CFCs: The venting prohibition covers more than CFCs.
Practice questionReviewedCore › Clean Air Act and Section 608 Rules★★★★★

Question 2. A technician will service a split-system air conditioner that uses R-410A. Which certification is required?

  1. ① Type II or Universal
  2. ② Section 609 (motor vehicle) certification
  3. ③ Type III
  4. ④ Type I
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Answer: ① Type II or Universal

Key point: High-pressure (R-410A, R-22) systems = Type II

R-410A is a high-pressure refrigerant. Servicing or disposing of medium-, high-, or very high-pressure appliances (other than small appliances and motor vehicle systems) requires Type II certification, which is also included in Universal.

Wrong choices

  • Section 609 (motor vehicle) certification: Section 609 is for motor vehicle air conditioning.
  • Type III: Type III covers low-pressure appliances such as R-123 chillers.
  • Type I: Type I covers only small factory-sealed appliances with 5 pounds or less.
Practice questionReviewedCore › Clean Air Act and Section 608 Rules★★★★★

Question 3. Recovered refrigerant is going to be sold to a different owner. What must be done first?

  1. ① It must be mixed with new refrigerant
  2. ② It only needs to pass through a recycling machine
  3. ③ It must be reclaimed by an EPA-certified reclaimer
  4. ④ Nothing; recovered refrigerant may be sold as is
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Answer: ③ It must be reclaimed by an EPA-certified reclaimer

Key point: Change of owner = must be reclaimed

Under 40 CFR 82.154(d), used refrigerant may not be sold to a new owner unless it has been reclaimed by a certified reclaimer to the purity standard in Appendix A (based on AHRI Standard 700).

Wrong choices

  • It must be mixed with new refrigerant: Mixing does not make used refrigerant legal to sell.
  • It only needs to pass through a recycling machine: Recycling cleans refrigerant for the same owner, but it does not meet the standard for sale to a new owner.
  • Nothing; recovered refrigerant may be sold as is: Used refrigerant cannot be sold to a new owner without reclamation.
Practice 5 questions from this unit →

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