Beginning 1 January 2026, U.S. HVAC regulations require that new residential and light‑commercial air‑conditioning and heat‑pump systems use low‑GWP refrigerants (often called A2L refrigerants) such as R‑32 and R‑454B. These regulations build on the 2025 manufacturing deadline: new AC/heat‑pump equipment built after 1 January 2025 must use a refrigerant with a global warming potential below 700. Equipment produced before that date had a grace period to be installed up to 1 January 2026. As of January 2026, the EPA has not yet finalized a rule that would delay this installation deadline, so the restrictions remain in force—even though federal enforcement has been described as a low priority. Homeowners in Cedar Park, Leander and Georgetown should understand what this means for their comfort and budgets.
Why the refrigerant is changing
Environmental impact: The widely used refrigerant R‑410A has a global‑warming potential of about 2 088. The American Innovation and Manufacturing (AIM) Act requires a phasedown of hydrofluorocarbons, leading to the adoption of A2L refrigerants with GWPs under 700.
Safety differences: The new refrigerants retain the same non‑toxic classification as R‑410A but are slightly flammable (Class 2L). To mitigate this, manufacturers are redesigning systems and adding leak‑detection sensors, shut‑off valves and other safety features.
Better efficiency: Many A2L‑based systems will carry higher SEER2 ratings.
What this means for homeowners
Existing systems can still be serviced: The new rules apply to manufacture and installation of new systems. If you have an R‑410A unit, you may continue to repair it, and components using R‑410A can still be used to service existing units.
Upfront costs may rise: The new equipment incorporates sensors and safety features to handle the flammability of A2L refrigerants. Industry sources note that these systems cost more initially, though their higher efficiency may lower operating costs over time. Homeowners with older equipment should weigh the cost of a 2025–2026 replacement against repairing an existing system.
Plan your replacement: If your air conditioner is 10–12 years old, ENERGY STAR recommends planning for replacement to take advantage of more efficient models. Contact a licensed HVAC professional to discuss whether upgrading before spring 2026 makes sense.
Residents of Cedar Park, Leander and Georgetown should speak with qualified HVAC technicians to explore A2L‑compliant options and understand local permitting requirements. Our team stays up to date on EPA rulemaking and can recommend the right system for your home’s size and budget.