When a 12-year-old AC is worth fixing — and when it isn't

"How old is it?" is usually the first question a homeowner asks when a system breaks down, and it's usually the wrong one. We've replaced compressors on fifteen-year-old units that ran another five years without issue, and we've recommended full replacement on systems half that age. Age tells you almost nothing on its own — what matters is what's actually failing, and what fixing it would buy you.

What we check before we recommend anything

Every diagnostic visit starts the same way regardless of the system's age: we find the actual fault and show you the reading. From there, three things decide whether repair or replacement makes more sense.

• The compressor. It's the most expensive single part in the system and the one most likely to make replacement the better call if it's failing. A bad capacitor or contactor is a repair. A failing compressor on an older unit is a different conversation.
• The refrigerant type. Systems older than roughly 2010 often run R-22, which has been phased out of production. If a system needs a significant refrigerant charge and it's still on R-22, the cost of the refrigerant alone can tip the math toward replacement.
• What the repair actually buys you. A $400 repair that gets you three to five more reliable years is a good deal. A $1,800 repair on a system that's already had two other major repairs in as many years usually isn't — you're financing the same eventual replacement, just in installments.

The comparison we actually walk you through

We don't hand you a replacement quote and hope you don't ask questions. We show you the diagnostic reading, tell you what the repair costs, and tell you honestly what we'd expect from the system afterward. If a repair is the better financial call, that's what we recommend — even though a replacement is the bigger job. It's the same reason our diagnostic fee gets credited toward whichever option you choose: we'd rather you trust the recommendation than feel like you're being upsold either way.

When replacement is genuinely the better call

Sometimes it is. A compressor failure on a system already running on phased-out refrigerant, a system that's needed three service calls in two summers, or a unit that's simply undersized for the home it's cooling — in those cases, a repair is a short-term patch on a longer-term problem, and we'll tell you that directly.