What are the most common AC repairs, and what should they cost?
Prices and facts checked July 8, 2026.
Most AC breakdowns come down to one of six parts. A run capacitor ($150 to $450 installed) and a contactor ($150 to $350) are the cheap, common fixes. Fan motors, blower motors, and control boards run roughly $350 to $1,300. Refrigerant leaks and compressors are the expensive tier: $300 to $1,500 or more for leak repair, refrigerant at $65 to $110 per pound, and $1,500 to $4,500 for a compressor. If your quote lands far outside these ranges, ask why before you sign.
National cost ranges by repair
Parts plus labor for a standard residential split system. Your metro, brand, and access can move any of these.
| Repair | Typical range |
|---|---|
| Run capacitor | $150 to $450The classic hot-day failure. Cheap part, fast fix. |
| Contactor | $150 to $350 |
| Condenser fan motor | $350 to $800High-efficiency ECM motors sit at the top of the range. |
| Blower motor | $400 to $1,300Standard motors low end; ECM motors high end. |
| Control board | $400 to $900Communicating systems can exceed this. |
| Refrigerant leak repair | $300 to $1,500+Accessible leaks low end; line-set work high end. |
| R-410A refrigerant | $65 to $110 per poundRising as R-410A is phased down. |
| Evaporator coil | $1,300 to $3,000 |
| Compressor | $1,500 to $4,500Variable-speed and premium systems at the top. |
National ranges from HomeAdvisor and Angi cost guides (2024), Fixr (2023), and 2025 to 2026 contractor pricing, cross-checked 2026-07-08. Emergency and after-hours calls run higher. These are planning ranges, not a quote for your job.
Why a $30 part becomes a $300 repair
The part is the smallest line in the price. You are also paying for the truck that got there today, the diagnosis, the warranty on the work, licensing and insurance, and the shop's overhead. That markup is not automatically a scam. A capacitor swapped in 20 minutes by someone who correctly identified it in 10 is worth more than the $30 the part costs online.
The problem is not markup. The problem is that in a breakdown you usually cannot verify which part failed, and the price only feels fair when the diagnosis is defensible. That is what the next section is for.
What each part does, and what its failure looks like
- Run capacitor: starts and steadies the motors. The unit hums but the outdoor fan won't spin, or it dies on the hottest day of the year. A tech can show you the reading: a capacitor measuring far below its printed rating is dead. Ask to see both numbers.
- Contactor: the relay that sends power to the outdoor unit. Pitted or welded contacts mean the unit won't start, or won't stop. The failed part is visibly burned. Ask to see it.
- Condenser fan motor: moves air across the outdoor coil. When it dies, the system overheats and shuts itself down. You can see the fan not spinning while the unit runs.
- Blower motor: pushes air through your ducts. Weak or no airflow at the vents while the system runs points here.
- Control board: the system's brain. Board failures mimic other problems, which makes them the easiest misdiagnosis on this list. Ask what was tested and ruled out before accepting a board verdict.
- Refrigerant leak: cooling fades over days or weeks, the coil ices up, run times stretch. Refrigerant does not get used up. Low refrigerant means a leak, and a recharge without a leak search buys you the same visit again next summer.
- Compressor: the heart of the outdoor unit and the most expensive verdict on this list. A real diagnosis includes electrical readings on the compressor windings, not just "it's not coming on." Verify before you accept it.
Before you approve any repair
- Ask to see the failed part and the reading that condemned it. A pro with a real diagnosis shows you without friction.
- Get the quote in writing with the part named, not "repair AC."
- Ask what warranty covers the repair, parts and labor both.
- On any repair over $1,000, or any recommendation to replace the system, get a second opinion before you sign. The math on that is a separate page below.
Common questions
Why is a $30 capacitor a $300 repair?
You are paying for the trip, the diagnosis, the warranty, and the overhead of a licensed shop, not just the part. That is fair when the diagnosis is shown to you. Ask to see the capacitor's measured reading against its printed rating; the two numbers settle it.
Is it normal to be charged per pound for refrigerant?
Yes. R-410A typically bills at $65 to $110 per pound in 2025 to 2026, and the price is rising as R-410A is phased down. What is not normal is recharging without a leak search: refrigerant does not get consumed, so low refrigerant means a leak that is still there.
The tech says my compressor is dead. Should I believe it?
Ask for the electrical readings on the compressor windings and whether it is shorted to ground. A compressor verdict costs $1,500 to $4,500, or triggers a full replacement quote, so it deserves evidence and a second opinion before you accept it.
Do these ranges include emergency or after-hours calls?
No. After-hours and holiday calls carry multipliers on top of these ranges. If your breakdown can safely wait until morning, waiting usually costs less.
Keep going
Sources
- HomeAdvisor / Angi cost guides (2024) (capacitor, fan motor, blower motor, coil, refrigerant, compressor ranges)
- Fixr cost guides (2023) (fan motor, blower motor, coil, compressor ranges)
- AmeriTech HVAC, "How much does it cost to fix a broken AC" (accessed 2026-07-08)
- ACE Home Services, AC repair cost guide (2026) (accessed 2026-07-08)