Hey folks, Tony Marino here—your no-BS HVAC guy with over 20 years in the trenches. If it heats, cools, or circulates air, chances are I’ve installed it, fixed it, or replaced it more than a few times. Today we’re cutting through the fluff and digging into the 2025 R-454B refrigerant shortage.
Whether you're a landlord keeping rentals efficient, a second-home owner prepping for summer, or a mechanically curious DIYer, here's what you really need to know.
What Is R-454B and Why Should You Care?
First things first—R-454B is an A2L refrigerant, meaning it’s mildly flammable but significantly more climate-friendly than older gases like R-410A. With a Global Warming Potential (GWP) of 466, it’s a big step down from the 2,088 GWP of R-410A.
That lower GWP makes R-454B the go-to choice to comply with phasedown mandates under the American Innovation and Manufacturing (AIM) Act. If you’re unfamiliar with the policy behind the refrigerant transition, the AIM Act is the federal law that’s driving the shift away from high-GWP refrigerants.
Don’t let the term “mildly flammable” throw you. A2Ls are safe when handled properly—if you're trained and your gear’s up to code.
What’s Causing the R-454B Shortage?
It’s a perfect storm. Here’s what’s clogging the supply chain:
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Regulatory Timing Is a Mess
Federal mandates are moving faster than production can keep up. Everyone's switching to A2Ls at the same time, which means demand for R-454B has gone through the roof—before infrastructure was ready. -
Supply Chain Bottlenecks
Manufacturers didn't scale up fast enough. That includes not just the gas itself but the parts, storage systems, and specially rated recovery cylinders. As explained in this excellent breakdown on what HVAC contractors must know about A2L refrigerants, trained techs are now scrambling to get the proper certified gear. -
Raw Material and Labor Costs
It’s not just about having enough gas. According to ACHR News’ report on Honeywell’s R-454B surcharge, prices have jumped by over 40% due to manufacturing costs and global inflation. -
Limited Distributor Inventory
Distributors that overstocked on R-410A gear are now stuck. Meanwhile, newer systems designed for R-454B or R-32 are often backordered for weeks.
How This Shortage Hits the Real World
This isn’t just a behind-the-scenes issue—it’s affecting contractors and homeowners alike:
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Install Delays: Lead times are stretching 2–4 weeks, especially in hot zones like the South and Southwest.
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Parts Compatibility Problems: You can’t just swap in a new R-454B unit without checking your coils and line sets.
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Price Inflation: Between surcharges and gear shortages, new installs are running 15–20% higher than last year.
Should You Consider R-32 Instead?
Here’s where it gets interesting: R-32 is gaining traction as a real alternative. Its GWP is 675—not as low as R-454B, but still much lower than R-410A. It’s also a single-component refrigerant, which makes it easier to recycle and reclaim.
According to the AHRI’s industry perspective on R-32 vs R-454B, more manufacturers are betting on R-32 for long-term stability, global acceptance, and ease of handling.
Tony’s No-Nonsense Tips
Here’s the street-smart advice:
✅ Plan Ahead
Don’t wait for a breakdown in the middle of summer. If your R-410A system is 10+ years old, start planning a replacement now.
✅ Get the Right Installer
Not every tech is trained in A2L refrigerants. Look for certified professionals through the NATE HVAC technician certification directory.
✅ Ask About R-32-Compatible Systems
If R-454B systems are delayed or overpriced, ask about systems already designed to work with R-32. They’re easier to source and just as efficient when installed properly.
✅ Stay Informed with Industry News
Keep up with credible trade sources like HVACR Business and Contractor Magazine to stay on top of price trends, refrigerant updates, and best practices.
Final Word From Tony
The refrigerant game is changing fast. Whether you're a seasoned contractor or a savvy property owner, now's the time to get ahead of the curve. R-454B is here—but so are the delays, price hikes, and growing pains.
My advice? Don’t wait for the bottleneck to hit your jobsite. Make smart calls, partner with pros who know A2Ls, and keep your options open—including looking at R-32.
If you’ve got questions, you know where to find me.
Stay cool,
Tony Marino
20-Year HVAC Vet | Certified No-BS Tech
