The cost of AC repair can vary depending on the specific issue and the geographic location. Minor repairs like a refrigerant recharge or replacing a capacitor can cost between $100 to $500. More significant repairs, like fixing a compressor or replacing a coil, can cost $1,000 to $2,500 or more. The cost of repairs may also depend on the age and condition of the AC unit. It's important to obtain a written estimate from a licensed HVAC contractor before any work is done to ensure transparency and accuracy of the cost.