What a Compliant Refrigerant Log Must Contain in 2026

The recordkeeping duties in § 84.106(l) sit on the owner or operator of the appliance — not the servicing contractor. Covered equipment is any refrigerant-containing appliance with a full charge of 15 pounds or more of a regulated substance, with two carve-outs: appliances containing only ozone-depleting refrigerants (like R-22) stay under the older Part 82 rules, and appliances in the residential and light commercial air conditioning and heat pump subsector are exempt from Subpart C entirely (§ 84.106(a)(3)). Contractors are not off the hook, though. When someone other than the owner or operator performs the installation, service, repair, or disposal, § 84.106(l)(4) requires that person to provide the owner or operator with a record containing the core service-entry fields. In practice, the technician creates the record and the owner keeps it — which means a contractor whose paperwork is incomplete is handing customers a compliance defect.

Section 84.106(l)(2) requires a record with the following information every time a covered appliance is installed, serviced, repaired, or disposed of, when applicable: 1. The identity and location of the appliance 2. The date of the installation, service, repair, or disposal 3. The part(s) of the appliance being installed, serviced, repaired, or disposed 4. The type of installation, service, repair, or disposal performed for each part 5. The name of the person performing the work 6. The amount and type of refrigerant added (or, for disposal, removed) 7. The full charge of the appliance 8. The leak rate and the method used to determine it Field 8 is the one that turns a log from a notebook into a calculation. The leak rate entry is not applicable when disposing of the appliance, following a retrofit, installing a new appliance, or when the addition qualifies as a seasonal variance — but for an ordinary top-off, a log entry without a computed leak rate and a named method (annualizing or rolling average) is missing required information.

Separate from per-service entries, § 84.106(l)(1) requires a standing record for each covered appliance, established by January 1, 2026 (or at installation for newer equipment) and kept until three years after the appliance is retired: • The identity of the owner or operator • The address where the appliance is located • The full charge and the method used to determine it • If the full charge was determined as an established range: the range, its midpoint, and how the range was determined • Any revisions to the full charge, how they were determined, and when • The date of installation The full charge entry matters more than it looks: it is the denominator of every leak rate calculation for that appliance. Revising it without documenting how and when is a records violation on its own.

Three more record types hang off the service log for appliances that hit a leak threshold or carry monitoring equipment: Leak inspections (§ 84.106(l)(5)) — date, method(s) used, the location of each leak identified, and a certification that all visible and accessible parts were inspected. The technician conducting the inspection must hand the owner documentation meeting these requirements when the service concludes. Verification tests (§ 84.106(l)(7)) — dates and results of all initial and follow-up verification tests, including the appliance location, the location of each repaired leak that was tested, and the type of test used. Automatic leak detection systems (§ 84.106(l)(6)) — installation records, the annual audit and calibration, and each date and location the system identified a leak.

The recordkeeping paragraph is only half the obligation. Section 84.106(b) requires the leak rate to be calculated every time refrigerant is added to a covered appliance (outside the retrofit, new-install, and seasonal variance exceptions) — and the moment that calculation crosses the applicable threshold (10% for comfort cooling and other appliances, 20% for commercial refrigeration, 30% for industrial process refrigeration), a 30-day repair clock starts under § 84.106(d). This is what makes the refrigerant log different from most compliance paperwork: the log is where the trigger fires. A log entry showing a commercial refrigeration unit at a 21% leak rate with no repair, inspection, and verification records behind it doesn't just fail to demonstrate compliance — it documents the violation.

The rule is format-neutral: records may be kept "in electronic or paper format." A paper log is legal. The practical question is whether it is complete, computed, and retrievable three years later. A paper logbook holds the fields a technician writes down. It does not compute a leak rate at the moment of service, does not know the appliance's category threshold, does not start a 30-day countdown, and does not total additions against the 125% chronic-leaker line across a calendar year. Every one of those becomes a manual step that has to happen back at the shop, every time. A spreadsheet can store all eight fields and even hold a leak-rate formula — if the full charge is right, the method is applied consistently, the formula survives copy-paste, and someone watches the thresholds and deadlines it doesn't flag on its own. The spreadsheet also has to be reconstructable per-appliance when an inspector asks for one unit's history, and its entries have to survive three years of file moves. Compliance software closes the gap by making the required fields the entry form, running the leak rate calculation at the moment the pounds are logged, opening the repair action with its federal deadline when a threshold is crossed, and keeping the per-appliance history exportable. That is the difference the regulation's own structure rewards: § 84.106 assumes calculation at every addition, not transcription at the end of the month.