Refrigerant Guide
R-410A, R-32, R-454B — what's changing, why it matters, and what it means for your next AC purchase.
What Is Refrigerant?
Refrigerant is the chemical compound that circulates through your AC system to absorb and release heat. It's the substance that makes air conditioning possible — it evaporates inside your home (absorbing heat) and condenses outside (releasing heat), creating the cooling effect.
Over the decades, the HVAC industry has transitioned through several refrigerant types as environmental regulations have evolved. Understanding where we are in this transition helps you make an informed equipment purchase.
Refrigerant Types Compared
| Refrigerant | Status | GWP | Notes |
|---|---|---|---|
| R-22 (Freon) | Phased out | 1,810 | No longer manufactured. Must replace unit. |
| R-410A (Puron) | Phasing down | 2,088 | Current standard. Being replaced by R-454B. |
| R-32 | Next-gen | 675 | Lower GWP, higher efficiency. Growing adoption globally. |
| R-454B | R-410A replacement | 466 | New standard for 2025+ equipment. |
GWP = Global Warming Potential. Lower is better. CO₂ has a GWP of 1 for reference.
R-22 (Freon): If You Still Have It
R-22 has been phased out since 2020.
R-22 is no longer manufactured or imported into the US. If your system uses R-22 and develops a refrigerant leak, it cannot be recharged. The only option is a full system replacement. If your dataplate shows R-22, it's time to plan for a new unit.
R-410A: The Current Standard
R-410A (branded as Puron by Carrier) has been the dominant residential refrigerant since the mid-2000s. It replaced R-22 because it doesn't deplete the ozone layer. However, R-410A has a high Global Warming Potential (GWP) of 2,088 — meaning it contributes significantly to climate change if released.
The EPA's AIM Act mandates an 85% reduction in HFC production by 2036. This means R-410A equipment will become increasingly expensive and eventually unavailable. While R-410A units are still being manufactured and sold today, the industry is actively transitioning to lower-GWP alternatives.
What this means for you: If you buy an R-410A unit today, it will work fine for its full lifespan (15–20 years). Refrigerant for service and recharging will remain available. But the next-generation alternatives offer better environmental credentials and, in many cases, higher efficiency.
R-32 & R-454B: The Future
R-32
GWP: 675 (68% lower than R-410A)
- Higher energy efficiency than R-410A
- Requires less refrigerant charge per unit
- Widely used in Asia and Europe already
- Growing adoption in North America
- A2L classification (mildly flammable)
R-454B (Opteon XL41)
GWP: 466 (78% lower than R-410A)
- Direct replacement for R-410A in new equipment
- Adopted by Trane, Goodman, and other major brands
- Similar operating pressures to R-410A
- The most likely long-term standard in the US
- A2L classification (mildly flammable)
What This Means for Your Purchase in 2026
You have two solid options right now:
Option 1: Buy R-410A equipment (lower upfront cost)
R-410A units are still widely available and typically cost less than next-gen models. They'll work fine for the full 15–20 year lifespan. Good choice if budget is the priority.
Option 2: Buy R-454B or R-32 equipment (future-proof)
Next-gen refrigerant units are more efficient and environmentally friendly. They typically come with higher SEER ratings. Good choice if you want maximum efficiency and the latest technology.
Not sure which is right? Schedule a free site visit and we'll walk you through the options based on your budget and goals.
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