Gas furnaces. They’re everywhere. Even with the influx of technology like heat pumps and ductless mini splits, gas furnaces still hold the title of the most common type of home heating system in the US. Gas furnaces wouldn’t be so popular if they created safety hazards, and all gas furnaces have several devices that help keep them running safely.
Today, we’re going to look at one of these key devices, the flame sensor. The flame sensor isn’t just a safety mechanism: it helps regular normal furnace operation and keeps the system working efficiently and evenly.