We've cooled homes along the Gulf Coast for more than 50 years, and in that time the refrigerant inside your air conditioner has changed more than once. The latest shift is the biggest in two decades: as of 2026, R-410A, the refrigerant in most local AC systems, is no longer used in new equipment. If your system is showing its age right as summer humidity sets in, here's what the change does and doesn't mean for you.
R-410A The Short Version
Production of new R-410A equipment ended in 2025, and as of January 1, 2026 contractors can no longer install brand-new R-410A systems. New air conditioners and heat pumps now run on lower-emission refrigerants — mainly R-454B (Carrier calls it Puron Advance) and R-32. Your current R-410A system is still legal, still safe, and still repairable. Nothing forces you to replace it.
Why Did R-410A Get Phased Out?
The change comes from the federal AIM Act, which directs the EPA to step down refrigerants with a high global warming potential. R-410A has been the home-cooling standard since the early 2000s, but its replacements cut greenhouse impact by roughly 75%.
The rollout in plain terms:
- Jan 1, 2025 — Factories stopped making new R-410A systems.
- Jan 1, 2026 — The window to install remaining R-410A inventory closed.
- Now — Every new residential system uses a next-generation refrigerant.
Importantly, the rule governs
new equipment,
not the unit already sitting beside your house.
Do I Have to Replace My Air Conditioner?
No, and this is the part that trips up most homeowners. Your existing R-410A system can keep running for years. Our technicians can still buy R-410A to recharge and repair it. You are never required to scrap a working unit because of this law.
The practical wrinkle: as R-410A is produced less and less, the price of the refrigerant itself climbs. If you've got an older unit that loses charge and needs topping off, those visits will cost more over the next few seasons, worth keeping in mind when you weigh another repair against a new system.
What's in the New Systems — and Is It Safe?
New equipment uses R-454B (Puron Advance) or R-32. As a Carrier Factory Authorized Dealer, Keith Air installs Carrier systems built around Puron Advance.
These refrigerants carry an A2L rating, meaning "mildly flammable." It sounds dramatic, but the practical reality is reassuring:
- A2L refrigerants only ignite under a narrow set of conditions, heavy concentration, no air movement, and a real ignition source, that don't occur in a correctly installed home system.
- New units include built-in leak sensors (required by updated UL 60335-2-40 codes) that shut the system off and alert you if refrigerant is ever detected indoors.
- These refrigerants have been used safely for years overseas.
Installed by our NATE-certified technicians, these systems meet the newest safety standards on the market.
Repair It or Replace It This Summer?
Lean toward replacing if:
- The system is 12–15+ years old — about the lifespan we see in our hot, salty Gulf air.
- It needs a big refrigerant recharge or compressor work.
- Your power bills keep climbing while rooms cool unevenly.
- You've had repeat breakdowns in recent summers.
Lean toward repairing if the unit is newer, holds its charge, and the fix is a minor electrical part. Not sure? That's exactly what a diagnostic visit settles. We'll give you a straight answer, the same honest approach that's kept Mobile families with us for generations.
Get Ahead of the Heat — From Foley to Fairhope
The worst time to find out your AC is failing is during a July heat advisory. A few smart moves:
- Book a pre-season tune-up so small issues surface early.
- Change your filter every month or two during heavy use.
- Watch for weak airflow, warm air, odd noises, or a sudden bill spike.
- Ask which refrigerant your system uses at your next visit so you know where you stand.
If your system does quit, Keith Air offers 24/7 emergency service across Mobile and Baldwin County - Daphne, Fairhope, Foley, Gulf Shores, Orange Beach, Spanish Fort, Loxley, Saraland, Dauphin Island, and beyond.
Talk to Mobile's Trusted HVAC Team Since 1964
Keith Air Conditioning is a family-owned, multi-time Carrier President's Award winner and NATE-certified Carrier Factory Authorized Dealer. Whether you want a plain answer about the refrigerant change, a second opinion, or a quote on a high-efficiency Carrier system, we're here.
Call 24/7:
251-317-2874
Schedule an appointment online
1201 Sledge Dr., Mobile, AL 36606
Frequently Asked Questions
Is R-410A refrigerant banned in 2026? New systems using R-410A can no longer be built or installed as of January 1, 2026, under the EPA's AIM Act. Existing R-410A systems remain legal and can still be serviced and recharged.
Can Keith Air still repair my R-410A AC? Yes. We can still purchase R-410A to repair and recharge existing systems. The refrigerant is expected to get more expensive over time as production winds down.
Will the new law force me to replace my system? No. It applies only to manufacturing new equipment. Your current AC can run its full lifespan.
What refrigerant do new air conditioners use? Mainly R-454B (Carrier's Puron Advance) or R-32, both with about 75% lower global warming potential than R-410A.
Are the new A2L refrigerants safe? Yes. They're classified mildly flammable but only ignite under extreme, specific conditions that don't occur in a properly installed home. New units also include required leak-detection sensors.
