If your older air conditioner still uses R-22 (a.k.a. Freon), you've probably heard it was phased out. So what replaces it—and what should homeowners in Woodstock, Kennesaw, Acworth, Marietta, Alpharetta, and Cartersville do next? Here's a clear breakdown from Guardian Home Experts.
Quick answer
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For new systems: R-22 was first replaced by R-410A. Now, because of new federal rules, manufacturers are transitioning to lower-GWP A2L refrigerants—primarily R-32 and R-454B—in 2025-2026 models.
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For existing R-22 equipment: There are retrofit ("drop-in") refrigerants for certain systems, like R-438A (MO99), but compatibility, performance, and warranty considerations mean it's not right for every unit. A pro evaluation is essential.
Why R-22 went away
R-22 is an HCFC that depletes ozone. The EPA ended U.S. production/import of R-22 on Jan 1, 2020. You may still use and service existing systems, but new R-22 isn't produced here, which is why topping off older units keeps getting pricier.
The progression: R-22 → R-410A → R-32 / R-454B
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R-410A became the standard for new residential ACs as R-22 was phased out.
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AIM Act (HFC phase down): Now the U.S. is reducing high-GWP HFCs (like R-410A) through 2036. Courts have recently upheld the EPA's authority to run this phase down, so the transition is moving ahead.
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A2L refrigerants (2025+): Most new residential systems are moving to R-32 or R-454B. They have significantly lower global warming potential than R-410A and meet new <700 GWP limits for most comfort-cooling equipment starting with 2025 manufacture (with an allowance to install in 2025-built stock through 2025; many regions effectively see model changeovers in 2025-2026).
Safety note: R-32 and R-454B are A2L (mildly flammable). Research and updated standards show they're hard to ignite and can be used safely when equipment and installation follow the latest codes and training.
What are your options if you have an R-22 system in North Metro Atlanta?
1) Keep running it (if it's healthy)
If your AC is cooling well and not leaking, you can continue using it. The EPA allows ongoing service, but R-22 supply is limited, so future repairs involving refrigerant can be costly. Preventive maintenance helps maximize remaining life.
2) Consider an approved R-22 retrofit refrigerant
Products like R-438A (MO99) are engineered to operate in many legacy R-22 systems without an oil change, which can reduce service costs and keep you going for a while longer. Results depend on system design, age, and condition; a load/pressure check and component evaluation are required before any retrofit. However, the cost of a retrofit on an aging HVAC system may now be sensible from a financial standpoint when those funds can go to a new system.
3) Replace the system (best long-term value for many homes)
If your unit is 10-15+ years old, needs major parts, or has a leak, replacement often beats pouring money into R-22 repairs. New systems using R-32 or R-454B deliver higher efficiency, longer warranties, and future-proof refrigerants aligned with the HFC phase down.
R-32 vs. R-454B—what's the difference?
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R-32: single-component refrigerant; lower GWP than R-454B; easier to reclaim/reuse; strong efficiency/capacity profile.
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R-454B: blend that's much lower GWP than R-410A and designed as a practical successor; behaves similarly to R-410A in charging practices. Many major OEMs are standardizing on it.
Both are A2L, both can be used safely in properly designed equipment, and both meet the new rules. Your best choice depends on brand, model availability, efficiency goals, and home needs.
Local perspective: what we're seeing in Woodstock, Kennesaw & nearby
In Woodstock, Kennesaw, Acworth, Marietta, Alpharetta, and Cartersville, we're already installing next-generation systems and servicing end-of-life R-22 units. Our typical guidance:
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If your R-22 system is leaking or needs a compressor/coil, put the dollars toward a new A2L system.
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If your R-22 unit is otherwise sound and you need a small top-off, ask about a retrofit option and whether it makes sense this season. Rarely is this an answer but the option is available.
FAQ: R-22 replacement questions we get in North Metro Atlanta
Is R-410A going away too?
Not "banned," but it's being phased down under the AIM Act, so availability tightens over time and manufacturers are shifting to R-32/R-454B in new gear.
Can I just drop R-410A or R-32 into my R-22 system?
No. Systems are engineered around specific pressures, oils, and components. Only approved R-22 retrofit blends are candidates—and only after a pro evaluation. ** Beware ** we have come across some companies blending refrigerants to make a quick buck. This is NOT the answer and while it may be a quick fix now, it will wreak havoc on your system and cost you more in repairs at a later date.
Are A2L refrigerants safe in my home?
Yes—when the equipment is designed for A2L and installed to current code. Industry research finds A2Ls are difficult to ignite when handled properly.
What's the best path for ROI?
If your system is older or leaking, a new high-efficiency A2L system typically wins on energy savings, reliability, and warranty coverage versus repeated R-22 repairs.
Bottom line for homeowners in Woodstock, Kennesaw, Acworth, Marietta, Alpharetta & Cartersville
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R-22 is out of production, so maintaining older systems will keep getting more expensive.
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R-410A replaced R-22, and R-32/R-454B are replacing R-410A in 2025-2026 equipment because of federal HFC phase down rules.
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For many homes, upgrading during a breakdown or major repair yields the best comfort, efficiency, and long-term value.
Ready for a straight, local recommendation?
Guardian Home Experts can evaluate your R-22 system, price retrofit vs. repair vs. replacement, and help you choose the best option for your home in Woodstock, Kennesaw, Acworth, Marietta, Alpharetta, or Cartersville. Schedule in minutes online and we'll be on our wait to help maintain or replace your hvac system.
