Central heating systems have a primary heating appliance, such as a furnace, typically located in your basement or crawl space. All furnaces consist of four main components:
Combustion gases are generated by the burners in your furnace and passed through a heat exchanger. Air from your home blows across the heat exchanger to be warmed. It is then blown through a system of ducts to distribute around your home.
During warm seasons your heating system works with your central air conditioning. Air is cooled as it's blown over your air conditioning unit's cooling coil and then through the same air ducts throughout your home.
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