How Does a Gas Furnace Work?
By Amy Nutt

A furnace is a device designed to heat a home or other building. A gas furnace is one that burns gaseous fuel such as natural gas or propane. If your home has a gas furnace, you may be curious about how it actually works. Understanding its parts and how they work together can help you ensure that your unit is operating efficiently, and may even help you perform small repairs yourself rather than spending big bucks on calling in the pros.

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