If you are buying a new AC system in 2026, you are buying a different refrigerant than the one in your old system. This is a federal EPA rule change that took effect January 1, 2025, and the practical impact on Houston homeowners shows up in three places: new system shopping, repair costs on existing R-410A systems, and warranty terms.
What changed
The EPA implemented the Significant New Alternatives Policy (SNAP) Rule 23, which restricts new residential and light commercial AC equipment to refrigerants with a Global Warming Potential (GWP) below 700.
- R-410A: GWP 2088. No longer in newly manufactured systems as of January 1, 2025.
- R-454B: GWP 466. The most common replacement, used by most major manufacturers.
- R-32: GWP 675. Used by Daikin and a few others.
R-454B and R-32 are both A2L classification, meaning mildly flammable. This is not the safety concern it sounds like — A2L refrigerants require an ignition source that does not exist inside an AC system. But equipment design changed to accommodate the classification: pressure ratings, leak detection sensors, brazing procedures, and refrigerant detection requirements.
If you already have an R-410A system
You can keep using it as long as it works. R-410A is still legal to purchase and service. Recharges and repairs on R-410A systems are fully supported.
Two practical considerations:
- R-410A pricing. As production decreases, refrigerant prices have climbed. A pound of R-410A that cost $5-8 wholesale in 2020 now runs $35-60. Recharge costs reflect this.
- End-of-life decisions. When an R-410A system fails in a way that requires significant refrigerant work (compressor, coil, line set), the cost calculation increasingly favors replacement with new R-454B equipment rather than rebuilding with expensive R-410A.
If you are buying a new system
New 2026 systems use R-454B or R-32. Some practical implications:
1. Equipment is not interchangeable
You cannot retrofit an R-410A coil with an R-454B compressor. The new systems are designed end-to-end for the new refrigerant. If you replace your outdoor unit, you replace the indoor coil too.
2. Installation requires updated practices
A2L refrigerants require properly brazed line sets, refrigerant leak detection sensors in some configurations, and updated installation training. Make sure your contractor is certified on A2L refrigerant handling.
3. Pricing is similar to R-410A systems
Despite initial industry concerns, R-454B equipment pricing has stabilized close to R-410A pricing. Expect installation costs in the same $4,500-$12,000 range as 2024 systems. Premium efficiency tiers (18+ SEER2) command similar premiums.
4. Efficiency standards
The refrigerant change happened alongside the SEER2 efficiency standard from 2023. New systems must hit at least 14.3 SEER2 in the South (Texas included). Mid-tier installations typically come in at 15-16 SEER2. Premium variable-speed systems hit 18-20+ SEER2.
What about R-22 systems?
R-22 production ended in 2020. Recycled R-22 is still legally available for repairs on existing systems but is increasingly expensive and scarce. If you have an R-22 system in 2026, you are at the end-of-life decision point on any meaningful refrigerant work. We rarely recommend repair on R-22 systems anymore; the math favors replacement.
What about commercial systems?
Light commercial systems follow the same rules as residential. Larger commercial equipment (above 65,000 BTU/h on certain configurations) has different transition timelines, but residential and small commercial Houston customers will see R-454B in any new install.
Warranty considerations
Manufacturers offer the same 10-year parts warranties on R-454B equipment that they did on R-410A. Some manufacturers now require professional installation and annual maintenance documentation for warranty enforcement. We register warranties on every Sierra install.
The bottom line for Houston homeowners
- If your R-410A system is healthy, keep using it. Recharges and repairs are still available.
- If your R-410A system needs major refrigerant work (compressor, coil, line set), get a replacement quote alongside the repair quote. The math has shifted.
- If you are buying new in 2026, you are buying R-454B (or R-32 with Daikin). Equipment is not interchangeable with R-410A.
- Verify your contractor is trained on A2L refrigerant handling.
- The refrigerant change does not significantly change pricing, but it does change the repair-vs-replace calculation on older R-410A systems.
If you want a second opinion on a repair-vs-replace decision in the context of the refrigerant transition, request a consultation. We will walk through your system's age, refrigerant type, and current repair quote and tell you whether replacement actually pays back faster than the repair.
