Closest lennox furnace parts near me
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While the supply plenum takes care of warm-air distribution, return ducts retrieve cool air from your home and cycle it back through the furnace. Flues are only found in gas and oil-powered furnaces. Since exhaust from the furnace contains carbon monoxide, the flue plays an important role in keep it out of the air in your home.
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In some homes, exhaust fumes exit through a vent or pipe, while in others they filter through a chimney. Also known as an exhaust stack, the flue disposes unwanted exhaust that results from gas and oil combustion. FlueĪlthough it sounds like exactly like something you don’t want during the winter, a heating flue actually helps to keep you nice and warm. It can develop cracks over time, leading to carbon monoxide leaks that can compromise the safety of your family. Since the heat exchanger deals with carbon monoxide, it should be inspected regularly by your HVAC specialist. At the same time, the draft inducer blower cools the combusted gases, vents them into a pipe (called a “flue”) and safely removes them from the house. The blower motor picks up this heat, pushes air past the exchanger and moves it through the supply ducts. Once these vapors enter the heat exchanger, its metal walls absorb their heat. It’s the first place where combustion gases arrive after the burners produce them. The heat exchanger is one of the most important parts of a furnace because it deals directly with heat. This action leads to a steady, controlled flame. Once the burners are lit, the hot surface ignitor kindles the combustible gases produced by the burners.
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The ignitor receives an electrical current that causes it to get hot and light the burners. When the temperature drops below the thermostat setting, the thermostat sends a signal to the hot surface ignitor. ( Supply plenum is just a fancy name for the furnace duct that dispenses warm air into your house to make it feel cozy.) Burners and Hot Surface Ignitor Air moves past the heat exchanger and into the supply plenum. It contains a fan (or blower) that sends an even current of air through the appliance. The blower motor is usually located near the base of the furnace in the blower chamber, and it resembles a hamster wheel. Here are the main parts that make up a modern residential heating system: Blower Motor While all of these types have their differences, they operate similarly by using many of the same components and mechanisms. In this article, we will give you a brief overview of the main parts of a furnace to help you understand what’s actually going on in that big, metal box.Ī home can have one of four types of furnaces:ĭual fuel heating systems are gaining popularity because of their efficiency and cost-effectiveness. Unless you’re an HVAC professional, a furnace can be a daunting piece of machinery. Do you run away screaming from your furnace (like Kevin McAlister from Home Alone) when it starts making funny noises?