10/03/2026
The AC question most buyers skip π§π‘
Three things that change how you price a Columbus house with an older system.
β SINCE JANUARY 2025. Every new residential system is built for R-454B or R-32. Anything older than that runs on R-410A.
β THEY DON'T MIX. R-454B is not a drop-in. It runs at different pressures, so a failing R-410A system becomes a replacement conversation, not a top-off.
β WHAT TO ASK AT THE INSPECTION. Model and serial, the system's age, and which refrigerant it takes.
None of this makes an older unit a dealbreaker. It just moves the question from after closing to before the offer.
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