The answer to 'average cost for maintenance' is that the cost can vary significantly depending on several factors. HVAC maintenance and tune-up services typically range from $75 to $300 per visit, but the exact price will depend on the size and complexity of your system, your location, and the specific services needed.
Some key factors that influence the cost of HVAC maintenance include the age and efficiency of your system, whether it's a furnace, air conditioner, or heat pump, the accessibility of the equipment, and any necessary repairs or replacements. Routine maintenance like filter changes, cleaning, and inspections are generally on the lower end of that range, while more involved services like ductwork cleaning or refrigerant recharges can be on the higher end.