Last reviewed: August 2026 · By the HVAC Brief Editorial Team · Our sourcing and editorial standards
New federal refrigerant leak repair requirements took effect on January 1, 2026, and residential and light commercial air conditioning and heat pumps are explicitly excluded from them.
The rules at 40 CFR 84.106 apply to appliances with a full charge of 15 or more pounds. Your house does not have one. Commercial refrigeration, chillers and industrial process systems do.
This distinction gets reported badly. Coverage of the leak rules often implies homeowners face new obligations. The regulation says otherwise, in terms, and knowing that saves arguments on both sides of a service call.
What the rule actually covers
| Criterion | Requirement |
|---|---|
| Charge size | Full charge of 15 or more pounds of refrigerant |
| Substance | A regulated substance, or a substitute with a global warming potential above 53 |
| Effective date | January 1, 2026 |
| Excluded | Residential and light commercial air conditioning and heat pump equipment |
| Also excluded | Appliances containing solely an ozone-depleting substance as refrigerant |
The exclusion is not an oversight or a grace period. It is written into the applicability paragraph at 40 CFR 84.106(a)(3)(ii).
What the rule requires where it does apply
- Documentation on every service event. Anyone adding or removing refrigerant must give the owner or operator documentation meeting the rule’s requirements.
- Leak rate calculation. The owner or operator must calculate the leak rate every time refrigerant is added, with exceptions for retrofits, new installations and seasonal variance.
- Repair obligations triggered when calculated leak rates exceed thresholds set for the equipment type.
- Record keeping sufficient to demonstrate compliance.
Venting refrigerant is prohibited regardless of charge size or equipment type, and recovery requirements under 40 CFR part 82 apply to residential work. The leak repair and record keeping regime is what excludes residential equipment, not the handling rules. A technician still cannot vent, and still needs certification.
Why a residential system that needs refrigerant still has a problem
Regulatory exclusion is not an engineering exemption. A sealed circuit does not consume refrigerant, so a residential system needing a top up has a leak, and repeatedly recharging it treats the symptom while the underlying fault persists and the refrigerant escapes. See what different AC symptoms mean.
Frequently asked questions
Do the new refrigerant leak rules apply to home air conditioning?
No. 40 CFR 84.106 applies to appliances with a full charge of 15 or more pounds, and paragraph (a)(3)(ii) explicitly excludes residential and light commercial air conditioning and heat pump equipment. The requirements took effect January 1, 2026 for the equipment they do cover.
What size system is covered by the leak repair rule?
Appliances with a full charge of 15 or more pounds of refrigerant, where the refrigerant is a regulated substance or a substitute with a global warming potential above 53. Residential and light commercial air conditioning and heat pumps are excluded regardless of charge.
Can a technician still vent refrigerant from a home system?
No. Venting prohibitions and recovery requirements under 40 CFR part 82 apply regardless of the leak repair rule’s applicability. The exclusion at 84.106 covers leak rate calculation, repair obligations and record keeping, not handling and venting rules.
When did the leak repair requirements take effect?
January 1, 2026, per 40 CFR 84.106(a)(4), for the equipment the section covers. Residential and light commercial air conditioning and heat pump equipment is excluded from the section entirely.
Methodology and limitations
Requirements are quoted from 40 CFR 84.106, leak repair, paragraph (a) applicability and paragraph (b) leak rate calculation, retrieved from the electronic CFR.
- We summarise applicability rather than reproducing the full repair threshold and record keeping provisions.
- Venting and recovery rules under 40 CFR part 82 are a separate regime and are not excluded for residential equipment.
- Nothing here is legal advice on compliance for a specific installation or business.
Sources
- US Environmental Protection Agency, 40 CFR 84.106, leak repair, via eCFR.
- US Environmental Protection Agency, 40 CFR part 82 subpart F, refrigerant handling and recovery.
The HVAC Brief is an independent trade publication. We do not sell equipment, take manufacturer advertising, or accept payment for placement in our research. Corrections welcome.
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