HVAC Repair vs. Replace: How to Decide

The decision in one framework

Four factors decide repair vs. replace: age, repair cost, efficiency, and reliability/comfort. A widely used shortcut is the "repair cost × age" rule — if the repair cost multiplied by the unit's age in years exceeds ~$5,000, replacement usually wins.

When to lean toward repair

The system is under ~10 years old, the repair is minor, it's still under warranty, and it's the first significant issue. Repair and move on.

When to lean toward replace

• The system is 12–15+ years old and needs a major part (compressor, heat exchanger).
• It uses phased-out refrigerant, making repairs costly.
• Bills keep climbing and a modern SEER2 / AFUE unit would pay back over time.
• You've had repeated breakdowns or persistent comfort problems.

Failure mode: deferring the decision

Pouring repairs into a dying system often costs more over two seasons than a planned replacement — and emergency replacements happen at the worst time. An honest diagnosis beats guesswork.

Proof

We give a straight repair-or-replace recommendation — no commission-driven upsell.

What to do next

Get an honest assessment: schedule a service call. Background reading: efficiency & value guide and Heat Pump vs. Furnace.