Professional Heating & Air Blog: Posts Tagged ‘standing pilot light’

How Does a Furnace’s Electronic Ignition Work?

Monday, March 13th, 2023

Gas furnaces have been around for quite some time. In 1885, the Bunsen burner was invented. With its natural gas flame that was capable of being regulated, this set the stage for the modern gas furnace. But it wasn’t until the 1940s that gas furnaces became common in US homes. 

The technology behind furnaces continues to evolve. One way they’ve evolved is how the gas burners are lit. Many older gas furnaces still have a standing pilot light to ignite the gas burners at the start of the heating cycle. You can think of a pilot light as a mini Bunsen burner in the furnace: a small, constant flame. When the furnace is turned on and the gas flows, the pilot light would ignite the gas burners.

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Do Gas Furnaces Still Use Pilot Lights?

Monday, January 30th, 2023
old-cast-iron-furnace

Most homeowners know if they have a gas or electric furnace in their homes. However, if we were to ask most people if their gas furnace has a pilot light, a lot of homeowners would probably respond that they don’t even know what a pilot light is–let alone if their furnace has one. 

The natural gas furnace has been popular since the 1940s, replacing coal-burning furnaces as a safer and more convenient option. Furnace technology has continued to advance not only in safety and convenience but in efficiency too. And so we come to the question: are standing pilot lights in furnaces still a thing? Let’s look into this question in more depth.

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