How much does AC repair cost?
The short answer
Common AC repairs run $150 to $1,200: a capacitor or contactor sits at the low end, fan and blower motors in the middle, and refrigerant leak repairs at the top. A service call and diagnosis typically runs $75 to $200 and is often credited toward the repair. When a single repair passes roughly a third of replacement cost on a system over 12 years old, replacement deserves a real quote.
AC failures cluster on the hottest days, which is exactly when emergency rates and rushed decisions happen. Knowing the normal price bands before the truck arrives is the homeowner's only real leverage, and it is enough.
These are directional US ranges including labor for central air systems. Heat pumps price similarly for shared components.
Common repairs, priced
| Repair | Typical cost |
|---|---|
| Capacitor or contactor | $150 to $400 |
| Thermostat replacement | $150 to $350 |
| Condenser fan motor | $400 to $900 |
| Blower motor | $500 to $1,200 |
| Control board | $400 to $1,000 |
| Refrigerant leak repair and recharge | $600 to $2,000 and up |
| Coil replacement | $1,200 to $2,800 |
Repair or replace math
Use the age test with the cost test: multiply the repair quote by the system's age in years. If the product passes roughly 5,000, replacement usually wins on economics. A $700 repair on a 6-year-old system (4,200) says repair. The same repair on a 14-year-old system (9,800) says get the replacement quote before deciding.
Refrigerant type matters: systems using phased-out R-22 refrigerant face very high recharge costs, which alone can tip an old system into replacement.
Avoiding the emergency premium
- Annual tune-up catches weak capacitors and dirty coils before July
- Keep filters fresh: airflow problems imitate expensive failures
- Get the failed part name and the quote in writing before approving work
- A second opinion on any quote over $1,000 is normal, not rude
Questions homeowners ask
Why did my AC fail on the hottest day?
Heat is maximum load. Marginal parts, weak capacitors, dirty coils, fail exactly when the system works hardest and longest.
Is refrigerant recharge a repair?
Only if the leak is found and fixed. Topping up a leaking system buys weeks or a season and the charge returns. Insist on leak search first.
Should the diagnosis fee apply to the repair?
Most reputable companies credit it. Ask when booking, and get the policy in the written quote.