At a home in Avalon, the homeowner stopped me at the door: "My last contractor said I have to replace my whole system now or it will be illegal because of a refrigerant law. Is that true?"
No. Some contractors use the refrigerant change as a pressure tactic. Here is what actually changed, in plain English.
What R-454B is
Refrigerant is what moves heat out of your house. Residential systems used R-22 until about 2010, then R-410A. New equipment now uses lower-impact refrigerants, most commonly R-454B, which cools like R-410A with a much smaller environmental footprint. The change comes from the federal HFC phasedown under the AIM Act.
The dates that matter
| Date | What changed |
|---|---|
| January 1, 2025 | Manufacturers stopped making new residential AC and heat pump systems with R-410A. |
| 2026 | EPA removed the original January 1, 2026 installation deadline. A rule effective July 27, 2026 allows R-410A equipment made before 2025 to be installed until existing stock runs out. |
| Ongoing | R-410A production is being phased down over the next decade. Parts and refrigerant for servicing existing systems are still available. |
What did not change
- Your existing R-410A system is legal to use, repair and maintain.
- You do not have to replace a working system.
- Refrigerant and parts for R-410A systems are still available.
Do I have to replace my AC now?
Not unless it is failing for other reasons. If your system cools well, is under 10 to 12 years old and has no major problems, keep it, maintain it and change the filter.
When replacement does make sense
Multiply the age of the system by the repair price. Under $5,000, repair usually makes sense. Over $5,000, especially on an older system, compare it with a replacement. For example, a compressor failure on a 13-year-old system usually points to replacement. A capacitor on a 12-year-old system is a simple repair.
Will repairs get more expensive?
R-410A refrigerant prices have been rising as production ramps down, so a leak repair costs somewhat more than it did a few years ago. It is not the crisis some ads suggest. Capacitors, contactors and most other repairs are priced as before.
Will new systems cost more?
New R-454B equipment costs a bit more than older R-410A equipment did, and installation includes commissioning the new leak-detection safety controls. A complete new AC in Cumming typically runs $5,500 to $14,500 with a matched coil.
If you are buying a new system
- Ask for a load calculation. The right size matters more than the refrigerant.
- Ask which refrigerant the quoted equipment uses, and get it in writing.
- Ask about A2L training and tools. R-454B systems have their own installation and service procedures; we are equipped for them.
- Make sure the leak sensor is commissioned and explained to you.
- Register the warranty. We register the 10-year parts warranty for you.
How the Avalon visit ended
We tested her system and found a repairable leak in an aging coil. Option A: repair and recharge for about $900 and get a few more years. Option B: a full new system for about $8,500. She was selling in two years and chose the repair. That was the right call for her, and we would have told her so either way.