Forced-Air Heating
The way it works is that ductwork carries air to the furnace where the air is filtered, warmed and blown back through vents to rooms throughout the house. Unlike in floor radiant heat, warm air immediately gets blown from ducts in the floor or baseboards in each room and you will feel heat instantly. Forced hot air is distributed easily and controlled in each room. The warm air is distributed via a main duct or "trunk" and a series of branches that lead to individual rooms or zones are connected throughout the house. Furnaces can be fueled by natural gas, oil, propane, coal, wood, or electricity. Today, most use gas because it is clean burning, commonly available, and relatively inexpensive. The benefit of this type of heating is that the heat distribution is instantaneous and can include and air-conditioning unit, a humidifier and an air filter. The downfalls with forced air heating system are cleaning, wear and tear on the furnace, dry air in the home, and increased particulate in the air. Other problems that can occur are insufficient heat, a noisy blower, too much heat, or a room temperature that does not match your thermostat setting.
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