How To Fix A Gas Furnace

fixing gas furnaceGas furnaces, sometimes referred to as forced air furnaces, are an essential appliance in many homes. It the main, and most times only, source of heat for the home. Many times, it is the number one overlooked appliance in the home- until it isn’t working properly!

The forced air furnace is really a simple device once you understand how they work. Inside a special built compartment called a heat exchanger, fuel and air mixture are burned to create heat. Heat exchangers are made of metal alloys that not only heat up easily from the flames and hot gases running through them, but can also withstand the expansion and contraction from being heated and cooled on a regular basis.

Heat from the hot metal heat exchanger is then transferred to the air. Very old style furnaces did this by means of convection. In other words, hot air rises, and cold air drops which causes a natural circulation. Modern furnaces utilize a supply fan driven by a motor to circulate air throughout the home. As the circulated air is passes over the hot heat exchanger, the heat is released to the air. This warm air is then distributed back into the home to keep it heated.

Today’s modern furnaces come in a multitude of styles, with many controls, safeties, and even microprocessors controlling them. That means more things to go wrong, and more things to check. Early furnaces were much easier to troubleshoot to locate any problems. Newer furnaces take a little more knowledge and understanding of how they operate to track down any issues.

Highly trained and experienced HVAC (Heating, Ventilation, and Air Conditioning) Technicians have the tools and know how to fix any furnace issue. Most times furnace parts are only available from a wholesaler who only sells to qualified technicians. This keeps the safety factor up. You don’t want an in-experienced person working on a furnace that can become a serious hazard, or start a fire.

There are, however, many things on a gas furnace that a homeowner can safely check on their own. Many times it can even be fixed by the average person. Heating technicians charge for their service by the hour. The less time they work on your furnace the better. If the homeowner could eliminate many of the common furnace problems, or at least narrow down the possibilities on their own, it would save the technician time (which equals money).

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Fixing a Gas Furnace