Do furnaces have pilot lights

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Do furnaces have pilot lights

Not all furnaces have pilot lights, but some older models do. A pilot light is a small flame that is kept burning continuously in order to ignite the main burner when the furnace turns on.

In more modern furnaces, a pilot light is not needed because they use electronic ignition systems, which are more efficient and reliable. These electronic systems can be either intermittent pilot or hot surface ignition, depending on the type of furnace.

Intermittent pilot systems use an electronic spark to ignite the pilot gas when the furnace turns on, while hot surface ignition systems use a heating element to ignite the gas directly. These systems do not require a continuous flame to remain burning, and they are generally considered safer and more efficient than pilot lights.