The answer to 'how much to fix preventive maintenance' is that the cost can vary widely depending on several factors. Preventive HVAC maintenance typically ranges from $75 to $300 for a standard tune-up and inspection, but the exact price will depend on the size and complexity of your system, your location, and the specific services included.
Some key factors that influence the cost of HVAC preventive maintenance include the age and condition of your equipment, whether you need any repairs or replacements, the labor rates in your area, and whether you have an ongoing service contract. It's best to get quotes from multiple local HVAC companies to compare pricing and services.