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Sources and verification
Last read · 2026-09-04Every sentence on this site that states a rule carries a section number. This page is the list behind those numbers: 29 entries from 40 CFR part 84, each with the primary source it was read from and the date it was read. The engine takes its thresholds and clocks from these entries and nowhere else; a page cannot cite what this list lacks.
| Section | Rule | Requirement, in plain words | Figure | Read |
|---|---|---|---|---|
| 40 CFR 84.106(a) | Applicability: full charge | The leak repair section applies to refrigerant-containing appliances with a full charge of 15 or more pounds of refrigerant. | 15 lb | 2026-09-04 |
| 40 CFR 84.106(a)(1), (a)(2) | Applicability: refrigerant | The refrigerant must contain a regulated substance (an HFC) or a substitute with a global warming potential greater than 53, using the GWPs in table 1 of 40 CFR 84.64(b). | 53 gwp | 2026-09-04 |
| 40 CFR 84.106(a)(3) | Applicability: exclusions | The section does not apply to appliances containing solely an ozone-depleting substance as the refrigerant, or to appliances in the residential and light commercial air conditioning and heat pump subsector. | 2026-09-04 | |
| 40 CFR 84.106(a)(4) | Effective date | The requirements of the leak repair section apply as of January 1, 2026. | 2026-09-04 | |
| 40 CFR 84.106(b) | Calculate the leak rate on every addition | The owner or operator must calculate the leak rate every time refrigerant is added to an appliance, unless the addition immediately follows a retrofit or a new installation, or qualifies as a seasonal variance. The person adding the refrigerant must give the owner or operator documentation of the service. | 2026-09-04 | |
| 40 CFR 84.102 (leak rate, method 1); 84.106(b)(1) | Annualizing method | Pounds added to return the appliance to full charge, divided by the full charge; divided by the shorter of the days since the last addition or 365, divided by 365; times 100. The first calculation after January 1, 2026 substitutes 365 days. | 2026-09-04 | |
| 40 CFR 84.102 (leak rate, method 2); 84.106(b)(2) | Rolling average method | The sum of the pounds added over the previous 365 days (or since the last successful follow-up verification test, if sooner), divided by the full charge, times 100. The first calculation after January 1, 2026 uses pounds added since that date. | 2026-09-04 | |
| 40 CFR 84.102 (leak rate) | One method per facility | The same leak rate method must be used for all appliances subject to leak repair at an operating facility. | 2026-09-04 | |
| 40 CFR 84.106(c)(2)(i) | Leak rate limit: commercial refrigeration | 20 percent leak rate for commercial refrigeration appliances. | 20% | 2026-09-04 |
| 40 CFR 84.106(c)(2)(ii) | Leak rate limit: industrial process refrigeration | 30 percent leak rate for industrial process refrigeration appliances. | 30% | 2026-09-04 |
| 40 CFR 84.106(c)(2)(iii) | Leak rate limit: comfort cooling and other | 10 percent leak rate for comfort cooling appliances, refrigerated transport appliances, and any other covered appliance not in the first two categories. | 10% | 2026-09-04 |
| 40 CFR 84.106(c)(1), (d) | Repair within 30 days | Leaks must be identified and repaired within 30 days of the refrigerant addition that exceeded the applicable leak rate (120 days if an industrial process shutdown is required). Repairs must be made by a certified technician. | 30 days | 2026-09-04 |
| 40 CFR 84.106(d) | Repair within 120 days with an industrial process shutdown | Where an industrial process shutdown is required, the repair period is 120 days instead of 30. | 120 days | 2026-09-04 |
| 40 CFR 84.106(e)(1) | Initial verification test | An initial verification test must be performed within 30 days (120 with an industrial process shutdown) of exceeding the leak rate, after the repair and before refrigerant is added back. | 30 days | 2026-09-04 |
| 40 CFR 84.106(e)(2) | Follow-up verification test | A follow-up verification test must be performed within 10 days of the successful initial verification test, or within 10 days of the appliance returning to normal operating characteristics and conditions if it was evacuated for the repair. | 10 days | 2026-09-04 |
| 40 CFR 84.106(g)(1)(i) | Leak inspections: 500 pounds or more | Commercial and industrial process refrigeration appliances with a full charge of 500 pounds or more that have exceeded the leak rate must be inspected once every three months after a successful follow-up verification test, until the leak rate calculations show four quarters in a row under the limit. | 500 lb | 2026-09-04 |
| 40 CFR 84.106(g)(1)(ii) | Leak inspections: 15 to 500 pounds | Commercial and industrial process refrigeration appliances with a full charge of 15 or more but less than 500 pounds that have exceeded the leak rate must be inspected once per year after a successful follow-up verification test, until the calculations show one year under the limit. | 2026-09-04 | |
| 40 CFR 84.106(g)(1)(iii) | Leak inspections: comfort cooling and other | Comfort cooling and other covered appliances that have exceeded the leak rate must be inspected once per year after a successful follow-up verification test, until the calculations show one year under the limit. | 2026-09-04 | |
| 40 CFR 84.106(h)(1), (h)(5)(i) | Retrofit or retirement plan | A retrofit or retirement plan must be created within 30 days when the owner or operator elects not to repair, takes no action, or repairs fail to bring the rate under the limit; the work must be finished within one year of the plan's date. | 30 days | 2026-09-04 |
| 40 CFR 84.106(j), (m)(4) | Chronically leaking appliances | An appliance containing 15 or more pounds that leaks 125 percent or more of its full charge in a calendar year must be reported to the EPA by March 1 of the following year. | 125% | 2026-09-04 |
| 40 CFR 84.106(l), (l)(1) | Records kept three years | All leak repair records must be kept for at least three years, in electronic or paper format. Appliance records are kept until three years after the appliance is retired. | 3 years | 2026-09-04 |
| 40 CFR 84.106(l)(1) | Determine and record the full charge | By January 1, 2026, or on installation, the owner or operator must determine the full charge of every covered appliance and keep: the owner or operator, the address, the full charge and how it was determined, any revisions, and the installation date. | 2026-09-04 | |
| 40 CFR 84.106(l)(2) | The service record | For each installation, service, repair or disposal: the appliance and its location, the date, the parts worked on, the type of work, the name of the person who did it, the amount and type of refrigerant added or removed, the full charge, and the leak rate and the method used. | 2026-09-04 | |
| 40 CFR 84.106(l)(4) | The technician hands the owner the record | If the work is done by someone other than the owner or operator, that person must provide the owner or operator with a record of the appliance, the date, the parts, the type of work, who did it, and the refrigerant added or removed. | 2026-09-04 | |
| 40 CFR 84.106(l)(7) | Verification test records | Records of the dates and results of every initial and follow-up verification test, the repaired leaks tested, and the test methods; the technician provides this documentation on conclusion of the service. | 2026-09-04 | |
| 40 CFR 84.108(a) | Automatic leak detection: 1,500 pounds or more | Industrial process and commercial refrigeration appliances with a full charge of 1,500 pounds or more of a covered refrigerant must install and use an automatic leak detection system. | 1500 lb | 2026-09-04 |
| 40 CFR 84.108(b) | Automatic leak detection: dates | Appliances installed on or after January 1, 2026 need the system on installation or within 30 days; appliances installed from January 1, 2017 to December 31, 2025 need it by January 1, 2027. | 2026-09-04 | |
| 40 CFR 84.102 (full charge) | How full charge is determined | One or a combination of: the manufacturer's determination; calculation from component sizes, refrigerant density and piping volume; actual measurement of refrigerant added or evacuated; or an established range, whose midpoint serves as the full charge. | 2026-09-04 | |
| 40 CFR 84.102 (seasonal variance); 84.106(b) | Seasonal variance | Refrigerant removed for a change of season and added back in an amount no greater than what was removed, both within one 12-month period, is not a leak-rate addition. | 2026-09-04 | |
| 40 CFR 84.64(a), (b) and table 1; appendix A to part 84 | Refrigerant GWPs | A regulated substance carries its AIM Act exchange value; a blend is the mass-weighted sum of its constituents; non-HFC constituents take the values in table 1 to 84.64(b). The lookup shows every figure. | 22 refrigerants | 2026-09-04 |
29 entries, read between 2026-09-04 and 2026-09-04 · verified 2026-09-04 · the text was pulled from the eCFR API at its 2026-06-01 point in time and read in full, not from a summary
How verification works
An entry is a section, a requirement in plain words, the number it turns on where there is one, the primary source, and the date the text was read. The date is the claim: on that day the section said this. When the regulation changes, the entry is reread and the date moves, and every page that cites it moves with it, because pages render from the library rather than repeating it. An entry older than ninety days is a warning on the scoreboard, whether or not the rule changed.
What this page is not: legal advice, a statement about any appliance or business, or a certification. It is the reading list. The comparison is dated the same way for the same reason.