Here's What It Means for Your Walk-In or Rack System
Your walk-in doesn't care about federal regulations. It just wants to hold 38°F and keep your product safe. But the refrigerant running through it is caught in the middle of one of the biggest regulatory shifts commercial refrigeration has seen in decades, and 2026 is the year it's getting real for a lot of operators who haven't been paying close attention.
If you run a grocery store, restaurant, or cold storage facility in El Paso, Las Cruces, or anywhere in West Texas, here's the plain-English version of what's changing with refrigerant rules, what it means for the system you already have, and what to think about before your next repair or new build.
What's Actually Changing With Refrigerant Rules in 2026?
The short version: under the EPA's AIM Act, high-global-warming-potential (GWP) refrigerants are being phased down across commercial refrigeration, and 2026 is a milestone year. As of January 1, 2026, new retail refrigeration systems have to meet GWP limits of 150 for larger charge sizes (200 lbs or more) and 300 for smaller systems, with the same limits extending to all new retail refrigeration by January 1, 2027. Industrial refrigeration, including cold storage warehouses, is on a similar staggered timeline.
Here's the part that trips people up: none of this is fully locked in yet. The EPA proposed a revised Technology Transition Rule in September 2025, moved into a low-enforcement period in December 2025, and a final ruling is expected sometime this year that could adjust timelines and GWP thresholds. Translation: the direction is set. Lower-GWP refrigerants are the future, but the exact dates and details are still being finalized. That's exactly why this isn't a "read one article and you're done" topic; it's one worth checking in on with whoever services your equipment.
Is R-404A or R-22 Being Phased Out?
R-22 is already gone for practical purposes. It's been illegal to manufacture or import in the U.S. since 2020, so if your system still runs on it, you're relying on recycled or reclaimed supply that gets more expensive every year. R-404A and similar high-GWP HFC blends, which are still common in a lot of commercial racks and walk-ins around town, fall inside the current phasedown. That doesn't mean they're illegal to use today. Existing systems can keep running and keep getting serviced, but they're on their way out for new equipment, and the same supply-and-price squeeze that hit R-22 is the writing on the wall for these too.
What Refrigerant Should a New Walk-In or Rack System Use Now?
For most new commercial installs going in this year, the realistic options are CO2 (R-744), A2L refrigerant blends like R-454B or R-454C, ammonia, or propane (R-290), and which one makes sense depends entirely on your application. CO2 systems handle larger rack applications well but need different components and technician training than a traditional HFC system. A2L blends are classified as mildly flammable, which means new detection and handling requirements, but they're becoming the standard drop-in replacement for a lot of mid-size equipment. Ammonia is the long-time standard for large industrial cold storage. Propane shows up in smaller self-contained cases.
This is exactly why building custom walk-ins in-house matters right now: every new system AM Refrigeration specs is being designed with where these rules are headed, not just where they are today. A system built around 2020's refrigerant assumptions is a system that's already behind.
Do I Have to Replace My Existing System Right Now?
No. If your current system is running and getting serviced, you don't have to do anything different today. The new rules are aimed at new installations, not equipment that's already in the field. The wrinkle worth knowing about: under the current proposed rule, a "major rebuild" (generally defined as replacing 75% or more of a system's components) can trigger new-installation requirements, meaning a big repair project could unintentionally push you into needing compliant refrigerant and compliant components. That's a conversation worth having with your technician before signing off on a large-scale repair, not after.
What Should El Paso & Las Cruces Businesses Do About This Now?
• Know what refrigerant is actually in your current system: your service records or equipment nameplate will tell you.
• Planning any new build, remodel, or major equipment replacement in the next 12–18 months? Start those conversations around low-GWP refrigerant options now instead of locking into outdated specs.
• Weighing a big repair versus a full system replacement? Get a straight answer on whether that repair crosses the "major rebuild" threshold before you commit. It changes the cost and timeline math either way.
How AM Refrigeration Can Help
We've been keeping El Paso and Las Cruces businesses cold since 1976, and we build our walk-ins and rack systems in-house, which means when refrigerant rules shift, we're not waiting on a manufacturer's catalog to catch up. We can walk you through what refrigerant your current system uses, what your options look like for a new build, and whether a repair you're considering is going to trigger anything you're not expecting.
If you're not sure where your system stands, that's exactly the kind of thing worth a phone call before it becomes a bigger decision.
915-562-2122
Frequently Asked Questions
Q: What is the AIM Act?
A: The American Innovation and Manufacturing Act of 2020 gives the EPA authority to phase down high-GWP hydrofluorocarbon (HFC) refrigerants across U.S. industries, including commercial refrigeration, in stages through the late 2020s.
Q: Is R-22 still legal to use in my system?
A: Yes, existing R-22 systems can still be serviced and repaired, but new production and import of R-22 ended in 2020, so available supply is limited and increasingly expensive.
Q: What's replacing R-404A in new commercial refrigeration equipment?
A: New systems are shifting toward low-GWP options like CO2 (R-744), A2L blends such as R-454B, ammonia, or propane (R-290), depending on the size and type of application.
Q: Will I be forced to replace my walk-in cooler in 2026?
A: Not if it's currently working and being serviced normally. The rules primarily affect new installations and major rebuilds involving 75% or more component replacement.
Q: How do I find out if my current system is affected?
A: Check your equipment nameplate or service records for the refrigerant type, or call AM Refrigeration at 915-562-2122 and we'll help you figure out where you stand.
Refrigerant regulations are actively evolving, and the EPA's final Technology Transition Rule was still pending finalization as of this writing (August 2026). The information above reflects the rules and timelines in effect at publication. For the compliance timeline that applies to your specific equipment, talk to our team directly rather than relying on any single article, including this one.