EPA Refrigerant Regulations for Commercial HVAC: Section 608 Compliance Guide

EPA refrigerant regulations for commercial HVAC systems have undergone their most significant transformation in decades. Between the ongoing R-22 phaseout, the AIM Act's HFC phasedown, and sweeping new leak management rules that took effect January 1, 2026, facility managers are now navigating a far more complex compliance landscape than just a few years ago.

This guide breaks down every layer of federal refrigerant regulation that applies to commercial buildings — what changed, what it requires, and what you need to do right now to stay in compliance.

What Is EPA Section 608?

Section 608 of the Clean Air Act authorizes the EPA to regulate the handling of refrigerants in stationary refrigeration and air conditioning equipment. The regulations under Section 608 (codified at 40 CFR Part 82, Subpart F) establish requirements for:

• Technician certification
• Refrigerant recovery and recycling
• Leak detection and repair
• Recordkeeping and reporting
• Refrigerant sales restrictions

Section 608 originally focused on ozone-depleting substances (ODS) such as chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), including R-22. The 2016 Significant New Alternatives Policy (SNAP) updates and the 2021 American Innovation and Manufacturing (AIM) Act have since extended federal refrigerant oversight to cover hydrofluorocarbons (HFCs), which are potent greenhouse gases.

For commercial facility managers, Section 608 compliance is not optional. Civil penalties for violations can reach $44,539 per day per violation under current EPA enforcement guidelines.

The R-22 Phaseout: Where Things Stand

History and Final Production Ban

R-22 (HCFC-22) was the dominant refrigerant in commercial and residential air conditioning for decades. Because it depletes the stratospheric ozone layer, the EPA regulated its phaseout under the Montreal Protocol and the Clean Air Act.

The phaseout followed a staged schedule:

What This Means for Existing R-22 Equipment

If your facility still operates equipment that uses R-22, you are not required to retrofit or replace it solely because the refrigerant has been phased out. However:

• R-22 is expensive and increasingly scarce. Prices for reclaimed R-22 have risen sharply since the 2020 production ban. Budget accordingly for service calls on aging R-22 systems.
• No virgin R-22 exists. All R-22 available today must come from reclaimed or previously stockpiled supplies. Technicians and suppliers must comply with reclamation standards.
• Retrofitting is restricted. R-22 systems cannot simply be converted to use A2L refrigerants (see below). Drop-in replacements have limitations and must be EPA-approved.
• Replacement planning is critical. Any significant R-22 system failure now is likely to trigger a full equipment replacement discussion, since repair costs may outweigh the remaining useful life.

The AIM Act and HFC Phasedown

Overview of the AIM Act

The American Innovation and Manufacturing (AIM) Act, signed into law in December 2020, gives the EPA authority to phase down the production and consumption of hydrofluorocarbons (HFCs). HFCs replaced R-22 and other ODS refrigerants but are themselves potent greenhouse gases — R-410A, the most common HFC used in commercial HVAC, has a global warming potential (GWP) of approximately 2,088 times that of carbon dioxide.

Under the AIM Act, HFC production and consumption allowances will be reduced to 15% of baseline historic levels by 2036.

The Technology Transitions Rule

The EPA's Technology Transitions Rule, finalized under the AIM Act, restricts the GWP of refrigerants used in new refrigeration and air conditioning equipment. Key commercial HVAC milestones include:

Note: As of late 2025, the EPA published a proposed reconsideration of portions of the Technology Transitions Rule. Facility managers should monitor EPA rulemaking updates, as specific GWP thresholds and timelines for some commercial categories remain subject to revision.

R-410A Phase-Out and Replacement Refrigerants

Beginning January 1, 2025, residential and light commercial air conditioning equipment using R-410A can no longer be imported or manufactured in the United States. R-410A (GWP ~2,088) does not meet the 700 GWP threshold established by the Technology Transitions Rule.

The primary replacement refrigerants now entering the commercial HVAC market are:

Critical note for facility managers: A2L refrigerants are mildly flammable. Existing HVAC equipment designed for R-410A cannot be retrofitted to use A2L refrigerants. The new refrigerant standards apply only to newly manufactured equipment. Older systems are grandfathered and may continue using HFC refrigerants until those systems require full replacement.

EPA HFC Leak Management Rule (40 CFR Part 84, Subpart C)

Overview

The most operationally significant regulatory change for commercial facility managers in 2026 is the EPA's HFC Emissions Reduction and Reclamation (ERR) Program, also known as the HFC Leak Management Rule, which became effective January 1, 2026 under 40 CFR Part 84, Subpart C.

This rule extends leak detection, repair, and recordkeeping obligations — previously limited to ODS refrigerants under Section 608 — to cover HFC-containing systems. For many commercial buildings, this substantially expands the scope of federally regulated HVAC equipment.

New Appliance Threshold: 15 Pounds

Under the legacy Section 608 rules, leak repair obligations applied to appliances with 50 pounds or more of refrigerant. Beginning January 1, 2026, that threshold drops to 15 pounds for HFC-containing systems.

This change brings a large number of previously unregulated systems into the compliance program, including:

• Rooftop HVAC units (RTUs) in the 3–20 ton range
• Small commercial refrigeration systems
• Process cooling equipment
• Computer room air conditioning (CRAC) units

Facility managers should conduct a complete equipment inventory to identify all HVAC and refrigeration systems containing 15 or more pounds of HFC refrigerant.

Leak Rate Thresholds That Trigger Repair Obligations

When a regulated appliance's annual leak rate exceeds the applicable threshold, the owner/operator must initiate repairs. The current trigger rates are:

If repairs cannot be completed within 30 days, operators may apply for a one-time 30-day extension with documentation. If an appliance continues leaking and cannot be repaired, the owner may be required to retrofit or retire the equipment.

Chronic Leaker Designation and Reporting

The HFC Management Rule introduces a "chronic leaker" designation. An appliance qualifies as a chronic leaker if it has a leak rate greater than 125% during a calendar year. Facilities with chronic leaker equipment must:

1. Submit an annual report to the EPA by March 1 of each year (starting March 1, 2027)
2. Document all repair attempts and outcomes
3. Evaluate whether equipment retrofitting or retirement is required

Automatic Leak Detection (ALD) Requirements

For large commercial refrigeration and HVAC systems, the 2026 rules introduce mandatory automatic leak detection (ALD) system requirements.

Who Is Required to Install ALD Systems

ALD systems must be capable of detecting refrigerant leaks at or below the applicable trigger threshold and must alert operators when a leak is detected. The specific performance standards for ALD systems are outlined in 40 CFR Part 84.

For facilities with large centralized chiller plants, district cooling systems, or large commercial refrigeration warehouses, this requirement should be on the immediate compliance radar if not already addressed.

Section 608 Technician Certification Requirements

Who Must Be Certified

Under Section 608, any technician who purchases, recovers, recycles, or disposes of refrigerant in stationary refrigeration and HVAC equipment must be certified by an EPA-approved organization. This requirement applies regardless of whether the refrigerant is an ODS or HFC.

Facility managers should verify that all contractors and in-house technicians working on refrigerant-containing systems hold current valid certification. Allowing uncertified individuals to handle refrigerant is a direct Section 608 violation.

Certification Categories

Exam Requirements

Technician certification requires passing a proctored exam administered by an EPA-approved certifying organization. The exam consists of a Core section plus the relevant type-specific sections. Universal certification requires passing all four sections (Core, Type I, Type II, Type III) — 100 questions total with a minimum passing score of 70% on each 25-question section.

Section 608 certifications do not expire. However, the EPA may update exam content as new refrigerants and regulations come into effect. Contractors working with newer A2L refrigerants should ensure their technicians have received adequate training on safe handling procedures, even if recertification is not currently required.

Recordkeeping and Reporting Requirements

For Commercial Building Owners and Operators

Facility managers are responsible for maintaining records related to refrigerant use, service, and leaks for all regulated appliances. Under both Section 608 and the new HFC Management Rule, required records include:

• Equipment inventory identifying all appliances containing 15 lbs or more of regulated refrigerant
• Refrigerant addition logs documenting the date, type, and amount of refrigerant added at each service visit
• Leak inspection records including the date of inspection, method used, and result
• Repair records documenting the date, type of repair, and verification test results
• Annual leak rate calculations for applicable appliances
• Chronic leaker reports (if applicable), submitted to EPA by March 1 annually starting in 2027

Records must generally be retained for a minimum of three years and made available to EPA inspectors upon request.

For Service Technicians and Contractors

Technicians servicing appliances with 50 lbs or more of ODS refrigerant (and 15 lbs or more of HFC refrigerant under the 2026 rules) must:

• Provide the appliance owner with an invoice indicating the type and amount of refrigerant added
• Document any leak tests performed and results
• Maintain proof of EPA certification at their place of business
• Keep records of refrigerant recovered, recycled, or reclaimed

Refrigerant Sales Restrictions

The EPA restricts who can purchase refrigerants in containers larger than 2 lbs. Purchases of refrigerant in containers larger than 2 lbs require Section 608 technician certification. Retailers selling refrigerant must maintain records of purchaser certification for three years.

Additionally, beginning January 1, 2026, a new reclamation standard prohibits refrigerant from being sold, identified, or reported as reclaimed if it contains more than 15% virgin-regulated substance by weight.

Compliance Action Plan for Facility Managers

Given the layered nature of current refrigerant regulations, here is a practical compliance framework for commercial facility teams:

Immediate Actions (Complete Now)

1. Audit your refrigerant inventory. Identify every piece of HVAC and refrigeration equipment containing refrigerant. Note the refrigerant type, charge size, and whether the system is currently under Section 608 or HFC Management Rule jurisdiction.

2. Flag all systems with 15+ lbs of HFC refrigerant. These are now federally regulated under the 2026 HFC Management Rule, even if they were below the old 50 lb threshold.

3. Review contractor certifications. Confirm that every contractor servicing your refrigerant systems holds the appropriate Type II or Universal EPA 608 certification.

4. Establish a refrigerant log. If you do not already maintain a formal refrigerant addition and service log, start one immediately. This is a recordkeeping requirement, not optional.

Near-Term Actions (Within 90 Days)

5. Calculate annual leak rates for all applicable systems. Use refrigerant addition records to determine whether any systems are approaching or exceeding trigger thresholds (10% for comfort cooling).

6. Assess ALD requirements. If any facility systems have 1,500 lbs or more of HFC refrigerant with a GWP above 53, confirm that automatic leak detection is installed or schedule installation before January 1, 2027 for existing systems.

7. Develop an R-22 exit strategy. If your facility still has R-22 equipment, evaluate remaining useful life, repair cost history, and the availability and cost of reclaimed R-22. Plan equipment replacement timelines accordingly.

8. Evaluate new equipment purchases. Confirm that any new HVAC equipment procured complies with current GWP limits under the Technology Transitions Rule. Verify that installation contractors are trained and equipped to handle A2L refrigerants safely.

Ongoing Compliance

9. Train facility staff. Ensure maintenance staff understand basic refrigerant handling protocols, leak reporting procedures, and documentation requirements.

10. Monitor EPA rulemaking. The Technology Transitions Rule is under active reconsideration as of late 2025. GWP thresholds and compliance dates for some commercial categories may be adjusted. Subscribe to EPA regulatory updates or work with a compliance consultant to stay current.

Summary of Key Regulatory Thresholds

Sources and References

• EPA Section 608 Regulatory Updates — US EPA
• Section 608 Technician Certification Requirements — US EPA
• Revised 608 Rule Fact Sheets — US EPA
• Stationary Refrigeration Leak Repair Requirements — US EPA
• Recordkeeping and Reporting Requirements for Stationary Refrigeration — US EPA
• Frequent Questions on the Phasedown of Hydrofluorocarbons — US EPA
• Protecting Our Climate by Reducing Use of HFCs — US EPA
• Regulatory Actions for Technology Transitions — US EPA
• EPA Emissions Reduction and Reclamation Program Fact Sheet — US EPA (PDF)
• New EPA Refrigerant Regulations Under 40 CFR Part 84 Subpart C — Yorke Engineering
• Status Update on the AIM Act and EPA's HFC-Refrigerant Regulations — Hunton Andrews Kurth
• January 1, 2026: When Refrigerant Leaks Can Trigger Mandatory System Retirements — Axiom Cloud
• Federal Regulators Just Expanded Refrigerant Oversight by 70% — BSI Group
• EPA's Technology Transitions Program Related to A2L Refrigerants (Q4 2025 Update) — ICC
• Understanding the EPA AIM Act — ERA Environmental