The answer to 'how much to fix replacement' can vary significantly depending on several factors. The cost to repair or replace an HVAC system component will depend on the type of equipment, the extent of the issue, the age and condition of the system, and your local labor rates.
Generally, minor repairs like replacing a thermostat or cleaning a condenser coil can range from $150 to $500. More complex issues like compressor or heat exchanger replacement can cost $1,000 to $4,000 or more. The best way to get an accurate estimate is to have a licensed HVAC technician inspect your system and provide a quote based on the specific work needed.