Pilot and spark igniter assembly
Grid is 1 inch square
18G90 Lennox Pilot
Manufacturer Part

18G90 Lennox Pilot

Genuine OEM Part # 18G90Alternative Part Number(s)
Manufacturer Part
Pilot and spark igniter assembly
Grid is 1 inch square
18G90 Lennox Pilot
$102.52
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Pilot and spark igniter assembly
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$102.52
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This part 18G90 is compatible with:

Product Type:
Furnace, Unit Heater

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Pilot Customer Reviews

Common Problems Fixed by the Pilot

Based on customer reports and repair data, this part commonly fixes these issues:

About the Pilot

A pilot in a furnace is a small flame that is used to light the main burners when the thermostat calls for heat. The pilot can be lit manually or be lit automatically by a spark igniter or a small hot surface igniter. A thermocouple or sensor is used to confirm the pilot is lit before gas is allowed to enter the main burner. If the pilot is damaged or the flame is too weak to stay lit, the pilot will need to be replaced.

Alternative Part Number(s)

Replaces Part Number 18G9001