Freon AC: What It Is and What You Need to Know

If you've been told you have a Freon AC, or you've seen it on a service invoice, you might be wondering what it actually means. At Good Hope Air Conditioning & Heating, we've worked on hundreds of Freon-based systems, so here's what's worth knowing.

"Freon" is actually a brand name that became shorthand for R-22, a refrigerant that was standard in residential AC systems for decades. Refrigerant is the chemical that cycles between liquid and gas inside your system, absorbing heat from indoor air and releasing it outside — it's the whole reason an air conditioner can cool a room.

R-22 has been phased out under federal environmental regulations, and it hasn't been manufactured in the United States since 2020. What's left in circulation is limited, which has driven the cost of recharging an older R-22 system up significantly.

If a technician tells you your system needs a refrigerant recharge, that's actually a sign something is wrong — a properly sealed system doesn't lose refrigerant on its own. Low refrigerant almost always means there's a leak somewhere in the lines or coil that needs to be found and repaired.

For homeowners with an older R-22 system, the real decision usually comes down to repairing the leak and paying for increasingly expensive R-22, or replacing the system with a newer unit that runs on R-410A or one of the newer refrigerants. For anything beyond a minor top-off, replacement is often the more cost-effective path long term.

Refrigerant work also isn't a DIY job — it requires EPA certification to handle legally and safely. If your system is low on refrigerant, that's exactly the kind of thing worth having a licensed technician look at.