AC repair costs $150 to $900 for most common problems, with the average repair landing at $350 to $500. The least expensive repairs — a capacitor, a contactor, a condensate drain clearing — cost $150 to $300. The most expensive repairs that are still worth making — a blower motor, an inverter board, a condenser fan motor — cost $500 to $1,200. A repair that exceeds $1,500 typically involves the compressor or the evaporator coil, and at that price point, the repair-versus-replace calculation tilts toward replacement, especially if the system is more than 10 years old.
The first cost in any AC repair is the diagnostic visit. Most HVAC companies charge a service call fee of $75 to $150 to send a technician, diagnose the problem, and provide a repair estimate. Some companies waive the diagnostic fee if you approve the repair. Others do not. Ask when you schedule. A $100 diagnostic fee and a $400 capacitor replacement are a $500 AC repair.
AC Repair Costs by Type of Repair
| Repair | Part Cost | Total Cost | Labor Time |
| Capacitor (compressor or fan) | $10-$40 | $150-$300 | 20-30 min |
| Contactor | $15-$40 | $150-$300 | 20-30 min |
| Condensate drain clearing | $0-$10 | $100-$250 | 30-60 min |
| Condenser fan motor | $80-$200 | $250-$500 | 45-90 min |
| Indoor blower motor (PSC) | $150-$350 | $400-$700 | 1-1.5 hrs |
| Indoor blower motor (ECM) | $400-$900 | $800-$1,500 | 1-2 hrs |
| Control board | $150-$400 | $400-$800 | 30-60 min |
| Inverter board (mini-split) | $400-$800 | $600-$1,200 | 1-2 hrs |
| Refrigerant leak repair + recharge | $50-$200 | $500-$1,500 | 2-4 hrs |
| Evaporator coil replacement | $400-$1,000 | $1,200-$2,500 | 4-8 hrs |
| Compressor replacement | $600-$1,200 | $1,200-$2,500 | 4-8 hrs |
The capacitor is the most common AC repair and the best value in HVAC. A $20 part and 20 minutes of labor restore cooling for $200 to $300. The compressor is the least common repair and the worst value. A $1,200 to $2,500 compressor replacement on a 12-year-old system is roughly half the cost of a new outdoor unit and carries no warranty on the remaining components. At that price, the replacement conversation begins.
Emergency vs. Scheduled Repair Costs
| Repair | Scheduled (Weekday) | Emergency (Night/Weekend) |
| Capacitor | $175-$250 | $300-$500 |
| Condenser fan motor | $300-$450 | $500-$800 |
| Blower motor | $500-$700 | $800-$1,200 |
The emergency surcharge — 50% to 100% above the scheduled rate — is the cost of a technician’s overtime, the hazard of working on a 95°F day when every AC in town is failing, and the market reality of supply and demand. A capacitor replaced on a Tuesday morning in April costs $175. The same capacitor replaced at 8 PM on a Saturday in July costs $350. The capacitor does not know what day it is. The technician does. Schedule repairs before the heat wave, not during it.
Central AC vs. Window Unit vs. Mini-Split Repair Costs
| System Type | Typical Repair Range | Most Expensive Common Repair | Repair or Replace Threshold |
| Central AC (split system) | $150-$2,500 | Compressor ($1,200-$2,500) | >$1,500 and >10 years old |
| Mini-split | $150-$2,500 | Inverter board + compressor ($600-$2,500) | >$1,200 and >8 years old |
| Window / portable AC | $100-$600 | Sealed system repair ($400-$600) | Almost any repair >$300 on a unit <$500 new |
Window and portable ACs are rarely worth repairing. A $400 sealed-system repair on a $350 window unit is not a repair. It is a mistake. The repair costs more than a brand-new unit with a warranty. The exception is a large, high-BTU window unit ($600 to $1,000) that is less than 3 years old and failed under warranty. In that case, the warranty covers the part and the labor is worth paying. For anything else window-sized, replacement is the correct financial decision.
When to Repair vs. Replace an AC
| Scenario | Action |
| Repair <$500, system | Repair |
| Repair <$500, system 8-12 years old | Repair |
| Repair $500-$1,000, system 10-15 years old | Get quotes for both |
| Repair >$1,000, system >12 years old | Replace |
| Compressor failure, system >10 years old | Replace — compressor is half the cost of a new outdoor unit |
Understanding the Diagnostic Fee
The $75 to $150 service call fee pays for the technician’s time to drive to your house, diagnose the problem, and provide a written estimate. It is not a deposit toward the repair. If you approve the repair, some companies apply the diagnostic fee toward the total. Others do not. Ask before the technician arrives. A diagnostic fee is not a scam. It is payment for expertise. The technician spent years learning to identify a failed capacitor by the sound of the compressor humming, and that expertise is what you are paying for.
When the estimate arrives, ask three questions: what part failed, what does the part cost, and how many hours of labor. A reputable technician answers without hesitation. A vague answer —”your AC needs a repair, it’ll be $500″— is not acceptable. You are paying for a diagnosis. The diagnosis should include the name of the failed component.
FAQ: Common Questions About AC Repair Costs
Does an annual tune-up prevent expensive AC repairs?
Yes, primarily by catching a failing capacitor before it fails completely, cleaning a dirty condenser coil before the compressor overheats, and identifying a slow refrigerant leak before the charge drops low enough to damage the compressor. A $150 annual tune-up that catches a $20 capacitor before it fails on a 95°F Sunday pays for itself. A tune-up does not prevent all repairs — a compressor can fail without warning, and a control board can be destroyed by a power surge — but it prevents the majority of expensive failures that are preceded by gradual degradation.
What is the most reliable AC for a rental property?
A basic single-stage central AC with a standard PSC blower motor and a fixed-orifice metering device. No inverter boards. No ECM motors. No communicating thermostats. The parts are universally available, every technician can repair it, and the most expensive common repair is a compressor at $1,200 to $2,500 — which on a basic unit is close to the cost of replacing the entire outdoor condenser. Simplicity is reliability. Every additional electronic component is an additional failure point and an additional repair bill.
The $20 Capacitor Is the Best Value in Home Repair
AC repair costs $150 to $900 for most problems, with the capacitor, the contactor, and the condensate drain leading the list of common, inexpensive fixes. The diagnostic fee is the price of certainty. The repair is the price of comfort. Together, a $500 AC repair on a Tuesday in May is the cheapest version of the problem. The same repair on a Saturday night in July is $800, and the compressor failure that results from ignoring the symptoms for a month is $2,500.
When the technician hands you the estimate, ask what failed, what the part costs, and how long the repair takes. If the repair exceeds $1,000 and the system is over 10 years old, ask for a replacement quote. The technician is already at your house. The second estimate takes 10 minutes and tells you whether repairing or replacing is the better financial decision.
