What is furnace draft control?

Furnace draft control is a system of controlling the flow of air and fuel to a furnace in order to maintain a desired temperature. The system typically consists of a draft damper, which controls the amount of air entering the furnace, and a fuel valve, which controls the amount of fuel entering the furnace. The draft damper and fuel valve are typically linked together so that as the draft damper opens, the fuel valve opens, and vice versa.

The purpose of draft control is to maintain a consistent temperature in the furnace, which is important for several reasons. First, maintaining a consistent temperature helps to prevent the furnace from overheating, which can damage the furnace and potentially cause a fire. Second, maintaining a consistent temperature helps to ensure that the furnace is operating efficiently, which can save money on fuel costs. Finally, maintaining a consistent temperature helps to provide comfort for the occupants of the home.

There are a few different types of draft control systems, but the most common is the barometric draft control. A barometric draft control uses a barometer to measure the air pressure in the furnace, and then adjusts the draft damper and fuel valve accordingly. Other types of draft control systems include the static pressure draft control, which uses a static pressure sensor to measure the pressure in the furnace, and the temperature-controlled draft control, which uses a temperature sensor to measure the temperature in the furnace.