The answer to 'how much to fix zone control system' is that the cost can vary widely depending on several factors. Typical ranges for repairing a zone control system can be anywhere from a few hundred dollars to several thousand, depending on the extent of the issue and the complexity of the system.
Some key factors that influence the cost include the age and condition of the existing system, the number of zones that need to be repaired or replaced, whether the issue is with the control panel, wiring, or individual zone dampers, and the labor rates in your local area. Calling in a professional HVAC technician is usually necessary to properly diagnose and fix a zone control system, as they have the expertise to identify and resolve the problem.