It’s a thin, metallic rod that is positioned in front of the flame stream inside thefurnace.
This is so that the flow of gas is cut off instead of continuing to seep into the home.
Use this guide to learn how toclean a furnaceflame sensor and restore heat to your home.
The Spruce / Sarah Lee
Remove the access panel to find the flame sensor.
It is a thin metallic rod that is typically secured by a single 1/4-inch hex headscrew.
Use a screwdriver to loosen this screw and then slide the sensor out of the furnace.
The Spruce / Sarah Lee
Over-cleaning the flame sensor can actually make the problem worse, leading to the replacement of this important part.
Secure the flame sensor with the 1/4-inch hex head screw, then replace the access panel.
For instance, many homes are designed with the furnace and laundry area in one room.
The Spruce / Sarah Lee
The Spruce / Sarah Lee
The Spruce / Sarah Lee
The Spruce / Sarah Lee
The Spruce / Sarah Lee
