Indy Edge // ShutterstockWhat are the benefits of a furnace tune-up? But a regular furnace tune-up from an HVAC professional is also important for preventing major problems with your system. Try DIY: Furnace Maintenance Tasks You Should Do YourselfNow, all that said, there are some furnace maintenance duties that you can take on without putting yourself in harm’s way or getting out of your depth. The best time to schedule an annual furnace tune-up is before you actually need the heat, usually in the fall. The price for an annual furnace tune-up can range from $100 to $300, and sometimes more, depending on the geographic area and the provider.