When winter is on the way and the cold weather is not something you are looking forward to (a situation that I, a resident of the Gulf Coast, cannot even imagine) you need to start considering maintenance of your gas furnace system. The forced air gas furnace uses a thermostat, pilot light, and air valves to heat your home. Any or all of these can go down at any time unless they are well maintained.
Lighting the pilot light is a must when the fall cool moves into the neighborhood of the winter cold. Holding the manual control for anywhere from half a minute to 45 seconds should ensure that the pilot light heating takes hold and provides you with a constantly lit pilot.
The gas jets that direct gas from the manifold into the burner tubes are popularly known as spuds. The gas furnace spuds screw into place and can sometimes come a little loose. The gas jets also need to be cleaned on occasion. A small wrench can be drafted into action to unthread the jet so you can clean it or to make sure that the spuds are tight enough in the first place to make sure your gas furnace is behaving as efficiently as possible.
You may need to replace a thermocouple during gas furnace maintenance. You will find some fittings located at the gas valve and the pilot light. Make sure that the head of the thermocouple is situated directly in the pilot flame when you install a replacement.
Twist the gas furnace burners free from the clips that hold them in place and lift them up and out if your gas burners are built in this way. Other gas furnaces are built in such a way that the burners held in place by bolts. You’ll have to take off the bolts if you are going to do any maintenance on this type of gas forced air furnace.
A buildup of rust and carbon material on a burner can affect the efficiency of your gas furnace. You can easily clear away rust and carbon buildup by first tapping the open end on the floor. Get yourself a good wire brush and clean the flame openings.
Make sure that the burners are before you adjust the air intakes. You should set the air intakes so that the result is a flame that is greenish-blue. Some models feature a sleeve intake that slides forward and backward and that are held in place by a setscrew.
Grab yourself a simple toothpick and insert it into the orifice of the gas jets. This will help you to remove rust and carbon buildup inside the gas jet openings. The one thing you want to make sure that you don’t do during furnace maintenance is make the opening any larger with your cleaning. Be very careful if you decide to use a wire instead of a toothpick.