Most AIM Act compliance content online is still written against deadlines that no longer apply. EPA signed a Reconsideration Rule on May 21, 2026 that removed or extended several Technology Transitions Rule deadlines, and a facility planning a 2026 replacement against the old dates could be spending money a revised rule no longer requires. The question worth asking first is which version of the rule a plan was built on. Book a 30-minute session to check an equipment list against the current deadlines.
AIM Act Compliance After the May 2026 Reconsideration Rule
The AIM Act Is Three Separate Tracks, Not One Rule
Most confusion starts here. "AIM Act compliance" gets used as a catch-all term for three tracks that move on different schedules and answer different questions.
Production Phasedown
The national HFC supply allowance shrinks on a schedule running to 2036, which affects how much R-410A and similar refrigerants exist in the market, not which equipment can be installed.
Technology Transitions
Sets GWP limits and installation deadlines by equipment sector. This is the track the May 2026 Reconsideration Rule revised, and the one most relevant to new equipment purchasing decisions.
Leak Repair and Reclaim
Governs tracked charge thresholds, leak-rate calculations, and repair deadlines for equipment already in service, independent of what GWP limit applied when it was installed.
A facility can be fully compliant on one track and still behind on another, so "are we compliant" is really three separate questions. Schedule a demo to see all three tracks checked against one asset list at once.
What the May 2026 Reconsideration Rule Actually Changed
The 2023 Technology Transitions Rule set GWP limits and deadlines by sector running 2025 through 2028. The reconsideration did not rewrite the rule, it adjusted specific dates and limits within it.
| Equipment Category | Original 2023 Deadline | Revised May 2026 | Change Type |
|---|---|---|---|
| Residential/Light-Commercial AC+HP | Install prohibition starting Jan 1, 2026 | Removed for units manufactured or imported before Jan 1, 2025 | Removed |
| Semiconductor Chillers | Jan 2026 / Jan 2028 (phased) | Extended to Jan 2030 | Extended |
| Lab Centrifuges/Shakers | Jan 2026 | Extended to Jan 2028 | Extended |
| Supermarket/Remote Condensing | 150/300 GWP limit | Raised to 1,400 GWP interim, reverts Jan 2032 | Relaxed, temporary |
| Cold Storage Warehouses | 150/300 GWP limit | Raised to 700 GWP interim, reverts Jan 2032 | Relaxed, temporary |
Note the pattern: most of this relief is interim, not permanent. Walk through this table against a specific equipment list in a 30-minute session, since the category a system falls into changes what applies to it.
What Did Not Change, and Why That Matters More
The relief made headlines, but it is narrower than it sounds. Four things the May 2026 rule left untouched still drive most compliance decisions.
The Core 700 GWP Ceiling
New residential and light-commercial AC and heat pump equipment manufactured after January 1, 2025 still cannot exceed 700 GWP, which rules out R-410A at roughly 2,088 GWP regardless of the install-date relief.
The National Phasedown Schedule
The production phasedown track to 2036 was not part of this reconsideration and continues on its own separate timeline.
Stricter State Programs
California, Washington, and New York run their own refrigerant rules that do not automatically loosen when a federal deadline does, so a facility in those states may still face the original timeline.
Existing Equipment Servicing
No version of this rule, before or after reconsideration, required removing or retrofitting equipment already installed and operating.
Reading the relief as "the whole rule got easier" is the mistake that leads to the next section's problem. Ask the iFactory AI team which of these four unchanged items affects a specific facility.
Check a Real Equipment List Against the Current Rule
Bring a planned replacement schedule to a 30-minute session and see which deadlines actually still apply, and which ones moved.
Four Questions That Decide Which Rule Applies to a Given Unit
Before checking a date against any table, four facts about the specific unit decide which version of the rule actually governs it.
Was it manufactured or imported before January 1, 2025?
Units built before that date fall outside the install prohibition entirely under the revised rule, regardless of when they get installed.
Which subsector does it belong to?
Residential/light-commercial AC, semiconductor chillers, lab equipment, supermarket refrigeration, and cold storage each sit on a different revised timeline.
What is the refrigerant's actual GWP against the applicable limit?
An interim limit and a permanent limit can both apply to the same equipment category at different points on the calendar, so the GWP has to be checked against the date, not just the category.
Is this a new installation or existing equipment being serviced?
Servicing an existing unit was never restricted by any version of this rule. The deadlines govern new installation only.
Answering these four for a specific unit usually resolves the question faster than reading the rule text itself.
A Composite Scenario: The Replacement Wave That Didn't Need to Happen Yet
A facilities team budgeted a 2026 rooftop unit replacement wave against the original January 2026 install prohibition. The figures below are an illustrative composite, not a cited statistic.
The plan was not wrong when it was built. It was built against a rule that had not yet been revised, and nobody was tracking the manufacture date that would have mattered once it was.
The Cost of Tracking This on a Spreadsheet
A spreadsheet can hold a deadline. It cannot tell a team when the rule behind that deadline has changed underneath it.
Over-Replacing on a Stale Deadline
Budgeting a replacement against a prohibition that was later removed spends capital a current plan does not require.
Missing a Deadline That Did Not Move
The headline relief can create a false sense that everything loosened, causing a team to miss the 700 GWP ceiling that was never touched.
State Rules Diverging Unnoticed
A facility operating in California or New York can follow federal relief into a violation of a state rule that never changed.
Manufacture Date Lost at Changeout
The date that decides whether the install prohibition applies is on the equipment nameplate, not the purchase order, and it is easy to lose track of between ordering and installing.
Charge-Size Thresholds Flattened
A spreadsheet built for one compliance track rarely also tracks the separate leak-repair charge thresholds that apply once equipment is in service.
The 2032 Reset Catching Teams Flat-Footed
Most of the interim relief reverts on January 1, 2032, and a plan built only for today's limits will be caught off guard six years out.
None of this requires a bad spreadsheet. It requires a system that updates itself when the rule does, which a static file cannot do.
What to Look for in a Compliance Tracking Approach
Whatever system tracks this, six criteria separate one that stays current from one that quietly goes stale.
Tracks Manufacture Date, Not Just Install Date
The deadline that matters most often hinges on when a unit was built, which is easy to lose once it leaves the purchase order.
Records Charge Size Per Unit
Leak-repair obligations run on separate charge thresholds that need their own field, not a note buried in a service log.
Separates Interim From Permanent Limits
An interim GWP limit and the date it reverts are two different facts, and conflating them is how a 2032 deadline gets missed.
Layers State Rules on Federal Ones
A unit in a stricter state needs both timelines checked, not just whichever one came up first in a search.
Updates When the Rule Updates
A rule that gets reconsidered once can get reconsidered again, so the tracking has to be a living system, not a document frozen at the date it was written.
Surfaces an Affected-Asset Worklist
The useful output is not the regulation text. It is a list of which specific units in a fleet are actually affected by a given change.
Most teams have access to the regulation text already. What they are missing is the second half: knowing which of their own assets it actually touches. Get a live walkthrough of an affected-asset worklist built from a real fleet.
What iFactory AI Adds to AIM Act Compliance Tracking
iFactory AI is smart manufacturing and industrial software, and the same compliance tracking engine that runs regulated plant floors applies directly to HVAC refrigerant transition planning: per-asset fields, deadline-aware worklists, and records that stay current when the rule changes.
iFactory AI arrives pre-configured on an NVIDIA server that ships racked and ready with the refrigerant compliance and leak register module pre-loaded. Rack it, connect power and Ethernet, and per-asset tracking starts running. Scope covers cabling, network, field-service software integration, team training, and 24x7 remote monitoring.
AIM Act Readiness Self-Check
Use these ten checks to find where a compliance plan is still running against a deadline that may have moved.
Each unchecked box is a place a plan could still be running on a date that no longer applies.
Frequently Asked Questions
Does the May 2026 relief mean R-410A can still be installed indefinitely?
No. The core 700 GWP limit for new residential and light-commercial AC and heat pump equipment manufactured after January 1, 2025 was not touched, and R-410A sits well above that limit. The relief only affects units manufactured before that date and a handful of other subsectors.
Which equipment categories actually benefited from the reconsideration?
Residential and light-commercial AC and heat pumps manufactured before January 1, 2025, semiconductor chillers, lab centrifuges and shakers, supermarket and remote condensing systems, and cold storage warehouses all saw deadlines extended or limits relaxed, though most of this relief is temporary.
Do stricter states like California automatically follow the federal relief?
No. State programs with their own refrigerant rules do not automatically adjust when a federal deadline changes, so a facility in one of those states may still need to meet the original, stricter timeline regardless of what the federal rule now allows.
What happens to the interim relief limits in 2032?
Most of the raised interim GWP limits, such as the supermarket and cold storage adjustments, are scheduled to revert to their original, stricter levels on January 1, 2032, which makes that date worth planning around now rather than later. Map a specific asset list against that reset date in a short session.
Does servicing existing equipment require any GWP compliance check?
No version of the Technology Transitions Rule, before or after the May 2026 reconsideration, required removing or retrofitting equipment that was already installed and operating. The deadlines apply to new installation, and existing units are governed instead by the separate leak repair and reclaim requirements.
Plan Against the Rule as It Actually Stands Today
iFactory AI tracks manufacture date, GWP, and charge size per asset, and surfaces exactly which units a rule change actually affects. Book a walkthrough using your own equipment list.
