Repair or Replace? The Honest Math

The framework we actually use

There's a rule of thumb in this industry sometimes called the 5,000 rule: multiply the age of the equipment by the repair cost. If the result is over about $5,000, replacement deserves a serious look; under it, repair usually wins. A $400 repair on an 8-year-old AC (3,200) is an easy yes. A $1,200 repair on a 14-year-old one (16,800) is money better put toward new equipment.

Age matters, but so does history

Central ACs typically last around 12–15 years in Colorado, furnaces often 15–20 with maintenance. But a single big number matters less than the trend: if this is the third repair in two seasons, the system is telling you where it's headed. One failure in a decade of quiet service is a different story.

The repairs that change the answer

Some components effectively total older equipment: a failed compressor on an out-of-warranty AC, or a cracked heat exchanger on an older furnace. Both repairs run a large fraction of replacement cost, and the surrounding equipment is just as old as the part that failed. When one of these fails on aging equipment, replacement is usually the honest recommendation.

What we promise either way

We don't work on commission, so the diagnosis you get is the diagnosis — with the repair price and the replacement math side by side. Plenty of times the answer is a repair and a maintenance plan to keep the system healthy. When it isn't, we'll show you exactly why.

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