The answer to 'average cost for furnace repair' is that the cost can vary widely depending on several factors. Typical furnace repair costs can range from $150 to $500 or more, but the actual price will depend on the specific issue, the age and model of the furnace, the complexity of the repair, and your local labor rates.
Some key factors that influence the cost of furnace repair include the type of problem (e.g. fixing a faulty thermostat, replacing a broken part, or addressing a more complex issue), the accessibility of the furnace, whether any special tools or parts are required, and the experience and qualifications of the HVAC technician. It's best to get multiple quotes from local HVAC companies to ensure you get a fair price for the work needed.