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The EXACT REPLACEMENT PARTS 18G89 flame sensor detects the presence of a flame and sends an electrical signal to a central controller. This furnace flame sensor is a direct replacement for Lennox and Armstrong number 18G8901 and has a total length of 3-1/8 inches. It is suitable for Lennox furnaces and heaters.
The EXACT REPLACEMENT PARTS 18G89 flame sensor is designed to detect the presence of a flame in Lennox and Armstrong furnaces.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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