Commercial Refrigerant Management: Build an Inventory and Leak-Response Plan

A commercial refrigerant-management plan starts with an accurate equipment inventory, a documented decision about which rules apply to each appliance, and a service workflow that turns refrigerant additions into reviewed records. Facility managers need to know what is installed, who evaluates a potential leak, and how corrective work is verified.

EPA requirements differ by refrigerant, appliance category, charge size, and installation date. This guide addresses stationary commercial facilities using federal requirements reviewed in October 2026. Have a qualified refrigerant professional confirm applicability, including state and local requirements, for each site.

A refrigerant inventory should identify the equipment and circuits serving the building.

What belongs in a commercial refrigerant inventory?

Give every appliance a unique record that matches its physical label, maintenance history, and work orders. Include:

Building, location, asset ID, manufacturer, model, and serial number
Application, such as comfort cooling, commercial refrigeration, or industrial process refrigeration
Refrigerant designation and supporting manufacturer or supplier information
Full charge in pounds and the documented method used to determine it
Installation date and identification of independent refrigerant circuits
Service dates, refrigerant added or removed, and technician documentation
Leak findings, repairs, verification results, and open actions
Responsible facility contact, service provider, and record location

For the AIM Act leak provisions, each independent circuit in a multicircuit system is treated as a separate appliance. Consequently, a building-wide total or a single entry for an entire equipment assembly can obscure the relevant threshold. EPA's HFC frequently asked questions explain this distinction.

When records disagree, flag the uncertainty for field verification. An estimated charge without its basis is a weak starting point for later calculations.

Which EPA leak-repair requirements apply?

Separate the federal programs before assigning deadlines.

Under the AIM Act's Emissions Reduction and Reclamation rules, leak-repair requirements began January 1, 2026, for covered appliances with a full charge of at least 15 pounds of refrigerant containing an HFC, or a substitute for an HFC that has a global warming potential above 53 under the rule's specified values. For blends, applicability depends on the covered substances they contain; a blend's overall GWP alone does not resolve the question. Appliances in the residential and light-commercial air-conditioning and heat-pump subsector are excluded. Equipment containing solely an ozone-depleting refrigerant is also excluded from this provision. See 40 CFR 84.106.

Do not classify equipment from the building's commercial address alone. EPA notes that chillers and certain variable-refrigerant-flow systems fall under their own subsectors. Its leak-repair fact sheet identifies covered-appliance annual leak-rate thresholds of 20% for commercial refrigeration, 30% for industrial process refrigeration, and 10% for covered comfort-cooling and other categories.

Separately, Section 608 leak-repair requirements address appliances with a full charge of at least 50 pounds of refrigerant containing a Class I or Class II ozone-depleting substance, including covered blends, when the applicable leak-rate threshold is exceeded. EPA's Section 608 overview identifies the relevant categories and corrective-action provisions.

A threshold exemption from one leak-repair provision does not establish that all refrigerant-handling obligations disappear. Have the service provider document the regulatory basis for each asset.

How should a refrigerant addition trigger follow-up?

For covered AIM appliances, the owner or operator generally must calculate the leak rate when refrigerant is added, subject to specified exceptions. The rule also addresses repair, verification testing, subsequent inspections, and records. Assign responsibility for reviewing every service event against those requirements. 40 CFR 84.106.

A practical owner workflow is:

Match the service report to the correct appliance or circuit.
Reconcile quantities, dates, refrigerant identity, and charge information.
Obtain the applicable leak-rate calculation and review its inputs.
Open a tracked action when investigation, repair, testing, or reporting is required.
Assign an accountable person and the equipment-specific due dates.
Retain completion evidence and review whether further inspections are due.

Request missing information promptly. An invoice saying that refrigerant was added gives procurement a price, but leaves facilities without the evidence needed to manage the event. Keep unresolved items visible even after the invoice is paid.

Does the facility need automatic leak detection?

Evaluate this separately. Federal automatic leak detection, or ALD, requirements cover certain commercial and industrial process refrigeration appliances installed on or after January 1, 2017, with a full charge of at least 1,500 pounds of refrigerant containing an HFC or a substitute for an HFC with a GWP above 53 under the rule's specified values.

For covered appliances installed from January 1, 2017, through December 31, 2025, the installation-and-use deadline is January 1, 2027. For covered appliances installed on or after January 1, 2026, ALD is required at installation or within 30 days. The rule also requires annual audit and calibration. See 40 CFR 84.108.

EPA says comfort-cooling-only appliances are outside this ALD requirement regardless of charge size; dual-function equipment needs closer review. A manufacturer's integral safety detector should not be assumed to satisfy the separate federal ALD specification. Ask for a documented applicability and capability review before buying detection equipment.

What should the service proposal deliver?

Ask bidders to specify inventory verification, service-report fields, calculation responsibilities, escalation contacts, repair authorization, and closeout documentation. Clarify who maintains the owner's records and who prepares any required submissions. Require usable exports if the provider stores records in its own portal.

For replacement planning, link the inventory to condition, operational importance, repair history, and approved capital budgets. Tustin's A2L refrigerant guide covers the separate equipment-transition discussion.

Frequently asked questions

Does every commercial HVAC unit follow the 15-pound rule?

No. Charge size is only one criterion. Refrigerant composition and the regulatory equipment subsector also matter, including the residential/light-commercial exclusion.

Can we keep one record for a building's total refrigerant?

Keep a portfolio summary if useful, but maintain appliance-level records. Independent circuits count separately under the AIM leak provisions.

Is January 1, 2027, a replacement deadline for all HVAC equipment?

No. The ALD date above applies to a defined group of existing commercial and industrial process refrigeration appliances. It is not a universal equipment-replacement date.

Who should confirm the plan?

Use qualified mechanical and refrigerant professionals, with regulatory or legal review where necessary. Local code and safety questions may require the authority having jurisdiction.

Build a clearer refrigerant service plan

The Tustin Group's mechanical services include refrigeration systems, refrigerant conversions, testing and analysis, retrofits, and capital planning. Contact Tustin to discuss your equipment inventory and confirm a site-specific service scope.