R-410A vs. R-454B Transition Guide: What Buyers Need to Know in 2026

Published by Mini Split Systems Direct | Last Updated: August 2026

Under EPA AIM Act regulations, the HVAC industry transitioned away from legacy R-410A refrigerant toward next-generation A2L low-GWP refrigerants, primarily R-454B (Opteon XL41) and R-32.

Why R-454B & R-32 Are Better for Homeowners

• 78% Lower Global Warming Potential (GWP): R-454B has a GWP of ~466 compared to R-410A's 2,088.
• Higher Operating Efficiency: R-454B and R-32 systems deliver higher SEER2 energy ratings per kilowatt of electricity.
• Future-Proof Support: Buying an R-454B or R-32 system guarantees long-term refrigerant availability and warranty support.