The Complete EPA AIM Act Compliance Checklist for HVAC Contractors

The AIM Act transition isn't a single deadline you hit once and move past — it's an ongoing set of operational requirements that touch certification, tooling, jobsite practice, and recordkeeping. This checklist is organized the way the actual work breaks down: what your people need, what your trucks need, and what your paperwork needs.

Verify every item against the current EPA AIM Act rule text, your state's mechanical code, and your distributor's compliance bulletins before publishing — this checklist is a starting framework, not a substitute for the primary source.

Certification and Training

 Confirm every technician's EPA Section 608 certification is current and on file — this remains the baseline requirement regardless of refrigerant type.

 Verify each technician handling A2L refrigerants has completed manufacturer or industry-recognized A2L safety training, not just general 608 certification.

 Check whether any manufacturer dealer programs your shop participates in now tie warranty registration or dealer status to proof of A2L training completion.

 Document training completion dates and certificates in a central file — several manufacturers and some jurisdictions may request proof during audits or warranty claims.

 Schedule refresher training on brazing, recovery, and jobsite ventilation practices specific to mildly flammable refrigerants, even for experienced techs.

Tooling and Equipment

 Confirm recovery machines in service are rated for A2L refrigerant handling — not all A1-rated recovery equipment is automatically compatible.

 Verify leak detectors on every truck are rated for A2L detection, not just legacy refrigerant families.

 Check gauge sets and hoses for A2L compatibility per manufacturer specification.

 Confirm recovery cylinders are correctly labeled and segregated by refrigerant type to avoid cross-contamination.

 Audit electrical components used near refrigerant lines on A2L jobs for compliance with updated ignition-source guidance.

Refrigerant Handling and Storage

•  Confirm shop storage areas meet ventilation and quantity-limit requirements applicable to A2L refrigerant storage.
•  Separate A2L and legacy refrigerant cylinder storage clearly, with signage and labeling that prevents technician mix-ups on a rushed morning.
•  Review recovery and reclaim procedures with the team — proper handling here is both a compliance requirement and a real cost-control issue as refrigerant pricing shifts.
•  Confirm your distributor relationship includes clear guidance on which refrigerant types they're stocking and any regional supply constraints you should plan around.

Jobsite Practice and Code Compliance

•  Confirm which install scenarios in your service area trigger mandatory leak detection and mitigation system requirements under the applicable mechanical code — this varies by space type and charge size, so don't assume a blanket rule.
•  Review ventilation requirements for A2L equipment installed in enclosed or occupied spaces.
•  Confirm line-set and component specifications match the refrigerant type on every new install — A2L and legacy equipment are not interchangeable, and this is not a field judgment call.
•  Check whether your municipality or province has adopted any code updates specific to A2L installations beyond the baseline federal/national requirement.

Business and Documentation

 Update customer-facing proposal and contract language to reflect refrigerant type and any related compliance disclosures where required.

 Confirm pricing on new installs reflects the real cost of A2L tooling, training, and handling — don't absorb this transition silently into your existing margins.

 Keep a running log of which trucks and technicians are fully A2L-equipped and certified, and which still need investment — this becomes your rollout plan, not just a compliance record.

 Set a calendar reminder to revisit this checklist quarterly. Refrigerant regulation at the federal, state, and provincial level has been amended more than once in the past two years, and "compliant in January" doesn't guarantee "compliant in October."

Why This Matters Beyond Avoiding a Fine

Compliance risk here isn't hypothetical liability sitting in a drawer — a mishandled A2L refrigerant incident is a real safety event, and non-compliant equipment installed after the applicable deadline can become a warranty and liability problem for your business, not just a regulatory one. Treating this checklist as a living document your shop actually works through, rather than a one-time read, is the difference between managing the transition and being surprised by it.

As your installed base shifts toward A2L-compliant equipment across a mix of ducted and ductless systems, it's also worth thinking about whether your control layer is keeping pace with that mixed fleet. The Boldr Universal Thermostat is built to work across exactly that kind of mixed-system environment, so equipment compliance and control consistency don't have to be two separate headaches.