New HVAC Refrigerant Changes in 2025: What You Need to Know
New HVAC Refrigerants in 2025: What Homeowners in West Allis & Milwaukee Need to Know
Changes that began in 2025 are moving new residential air conditioners and heat pumps toward lower-global-warming-potential (GWP) refrigerants, including R-454B and R-32. This transition does not require homeowners to replace an existing R-410A system.
If you’re considering an AC replacement or upgrade, understanding the refrigerant transition can help you discuss your options for your West Allis or Milwaukee home. Regulatory information updated September 11, 2026.
Why Are New Systems Moving Away from R-410A?
Under the American Innovation and Manufacturing (AIM) Act, EPA is phasing down HFC production and consumption and restricting higher-GWP refrigerants in new equipment. For residential and light commercial AC and heat pump systems, EPA lists a GWP limit of 700 beginning January 1, 2025. Current rules allow installation without a deadline when all specified components were manufactured or imported before January 1, 2025. These new-system restrictions do not prohibit components used to repair existing systems. See EPA’s current restrictions by sector.
This isn’t the first time the HVAC industry has seen a refrigerant change. Homeowners previously transitioned from R-22 (Freon) to R-410a—a process that impacted HVAC system design, maintenance, and upgrades.
R-454B and R-32 have lower GWP than R-410A. A refrigerant change alone does not establish a system’s energy efficiency or guarantee lower utility bills.
What Refrigerants Are Used in New Equipment?
EPA lists the following alternatives as acceptable for specified new equipment, subject to use conditions:
R-454B: An A2L refrigerant blend with lower GWP than R-410A.
R-32: A single-component A2L refrigerant with lower GWP than R-410A.
A2L refrigerants are mildly flammable. They require equipment designed for them and installation and service that follow applicable safety standards and manufacturer instructions. See EPA’s refrigerant alternatives and use conditions.
Will My Current HVAC System Work with the New Refrigerants?
Do not put R-454B or R-32 into equipment designed for R-410A. EPA prohibits using these refrigerants in systems that were not designed for them.
You can continue to repair your existing R-410A system, including replacing a faulty component with a compatible R-410A component. The transition does not, by itself, require replacement. Compare repair and replacement estimates based on your equipment’s condition and needs. See EPA’s HFC phasedown questions and answers.
What Should Homeowners Do to Prepare?
Plan Ahead for System Upgrades:
Consider your system’s age, repair history, comfort, and energy use when discussing repair or replacement with your HVAC technician.Budget for the Work You Need:
The team at Done Right Air can help you explore flexible financing options for HVAC system replacements. Ask for an estimate for your specific system and installation.Schedule Routine Maintenance:
Regular maintenance helps keep your current system operating until you’re ready to upgrade.
How Do I Know Which Refrigerant My System Uses?
You can typically find your AC refrigerant type on the label of your outdoor unit. If the label is unclear or missing, don’t worry—our experienced technicians at Done Right Air can help!
📞 Call us today at (414) 888-6880 to identify your refrigerant or discuss your upgrade options.
Trust Done Right Air for a Smooth Transition
As West Allis and Milwaukee's trusted HVAC experts, we’re here to guide you through the 2025 refrigerant changes. Whether you need routine maintenance, repairs, or a full system upgrade, we ensure your HVAC system runs efficiently, reliably, and meets the latest environmental standards.
📞 Call Done Right Air at (414) 888-6880 or contact us online to schedule your consultation and stay ahead of these HVAC changes!
