Heating tune up in Cumming Georgia. Tested operation of 2 furnaces. Upstairs furnace operation normal and all components tested within normal manufacturing spec. System needs new ductwork, blower wheel cleaning and attic insulation. Downstairs system has worn flame safety, ignition has signs of wear, system needs blower wheel cleaning, duct cleaning, and water safety. Systems heating at this time. Filters will need to be changed in the spring. Upstairs filter is a 16x20x5 and is not common truck stock. Cleaned both blower wheels and changed downstairs flame safety. Systems heating at this time