The answer to 'how much to fix central air' is that the cost to repair a central air conditioning system can vary widely depending on several factors. Generally, minor repairs like replacing a thermostat or cleaning the condenser coils can range from $150 to $500, while more complex issues like compressor replacement can cost $1,000 or more.
The total cost is influenced by the age and condition of the system, the specific problem that needs to be addressed, the cost of parts and labor in your local area, and whether the system requires any additional maintenance or upgrades. It's best to get quotes from multiple HVAC contractors in your local area to get an accurate estimate for your particular system and situation.