Lennox 21L98 Ignitor Electrode utilizing this genuine Williams replacement

utilizing this genuine Williams replacement part is non-negotiable for system safety and ensuring the unit meets factory-specified efficiency ratings

and Luxaire gas furnaces and air handlers

it is recommended to pour approximately one cup of water into the assembly to establish the initial water seal before cycling the furnace

verifying the specific S1-025-38948-000 part number is recommended for guaranteed compatibility

3" in width

Lennox 21L98 Ignitor Electrode utilizing this genuine Williams replacementThe Lennox 21L98 Ignitor Electrode is a critical furnace component designed for precise direct spark ignition (DSI) sequences in high efficiency residential and commercial units. This genuine OEM part, which is cross referenced and identical to Lennox 21L9801, ensures the correct spark gap and flame rectification required for consistent burner light off. Unlike generic alternatives, the 21L98 is engineered with high grade ceramic insulation to prevent