LeakLedgerPart 84 guide
Part 84 guide for refrigeration contractors
EPA's leak repair rule for HFC systems took effect January 1, 2026. These guides explain what it requires in plain English, with the citation for every statement — written for the contractors who keep the records.
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40 CFR Part 84 Subpart C Leak Repair: The Complete Guide for Refrigeration Contractors
Who is covered, 20/30/10% leak rate thresholds, the 30-day repair clock, verification tests, inspections, chronic-leak reports and records under Part 84.
Chronically Leaking Appliance Reports: What's Due March 1, 2027
Appliances losing 125% of their full charge in a calendar year must be reported to EPA by March 1. What counts, what's in the report, how to catch it.
Does the 15-lb Rule Apply to My Equipment? Racks, Walk-ins, Rooftops and Refrigerants
Part 84 leak repair covers appliances with 15 lb or more of HFC or GWP > 53 refrigerant. How it applies to racks, walk-ins, reach-ins, rooftops and CO2.
Annualizing vs Rolling Average: How to Calculate Leak Rate Under §84.102
Both EPA leak rate methods worked through on the same service history, why they differ, the first-calculation rule for 2026, and common mistakes.
The 30-Day Repair Clock: Verification Tests, Extensions and Follow-Up Inspections
When the Part 84 repair clock starts, what initial and follow-up verification tests must show, when extensions apply, and inspections afterwards.
Retrofit or Retirement Plans Under §84.106(h): Triggers, Contents and Deadlines
When Part 84 requires a retrofit or retirement plan, the seven things it must contain, the one-year schedule, relief requests and extensions.
Part 84 vs Section 608: What Changed for HFC Refrigeration Systems
Part 84 lowers the leak repair threshold to 15 lb for HFC systems, adds chronic-leak reports and automatic leak detection. A side-by-side for contractors.
Automatic Leak Detection for 1,500 lb Systems: The January 1, 2027 Deadline
Commercial and industrial refrigeration with 1,500 lb or more of HFC refrigerant needs automatic leak detection. Which systems, which dates, requirements.
What to Hand Your Customer: Service Records Under §84.106(l)(4)
Under Part 84 the contractor who services a covered appliance must give the owner a service record. What it contains and who calculates leak rates.
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