The answer to 'how much to fix tune-up' is that the cost can vary significantly depending on several factors. Generally, a basic HVAC tune-up service can range from $75 to $200 or more, depending on the size and complexity of your system, as well as your location and the specific services included.
Factors that can affect the cost of an HVAC tune-up include the age and condition of your system, the accessibility of the unit, the cost of labor and materials in your area, and the specific tasks performed during the tune-up. More comprehensive tune-ups that include additional services like cleaning, part replacements, or system diagnostics may be on the higher end of the range.