Industry Updates
New Refrigerant Regulations Are Coming — What Homeowners Need to Know
The HVAC industry is transitioning from R-410A to lower-GWP refrigerants like R-454B and R-32. Here's what this means for your home, your existing system, and future installations.
Published 2026-07-01 · Updated 2026-07-01 · DB Enterprises
Why refrigerants are changing
Refrigerants are the fluids inside your AC or heat pump that absorb and release heat. Older refrigerants like R-410A (the current standard) have high Global Warming Potential (GWP) — meaning they trap significantly more heat in the atmosphere than newer alternatives.
Under the Kigali Amendment to the Montreal Protocol and regulations from the EPA (US) and ECCC (Canada), the industry is phasing down high-GWP refrigerants.
What's changing and when
The key date: As of 2025 in the US and 2026 in Canada, manufacturers can no longer produce new systems using R-410A. Existing R-410A systems can still be serviced and repaired with reclaimed or recycled R-410A.
R-454B (GWP 466) and R-32 (GWP 675) are the approved replacements, both with dramatically lower climate impact than R-410A (GWP 2,088).
What this means for homeowners
If you have an existing R-410A system: no immediate action needed. Your system will continue to operate normally and repairs are still possible.
If you're planning a new installation: new systems already ship with R-454B or R-32. If your system is over 10-12 years old, consider planning a replacement on your timeline.
Are the new refrigerants safe?
Yes. R-454B and R-32 are classified as A2L refrigerants — mildly flammable. They have been used safely in Asia and Europe for years. HVAC technicians follow updated safety standards.
FAQ
Can I retrofit my existing R-410A system to use R-454B?
No. The two refrigerants require different components including compressors and expansion valves. Retrofitting is not safe or economical.
Will my old system stop working after 2026?
No. Existing R-410A systems will continue to operate. Service and repairs will remain possible using reclaimed refrigerant, though costs will gradually rise.
Do rebates still apply to new systems with R-454B?
Yes. Federal and provincial rebate programs continue to apply to eligible new high-efficiency systems regardless of refrigerant type.
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