Lennox 21L98 Ignitor Electrode Enhanced System Accuracy: Eliminates thermal

Enhanced System Accuracy: Eliminates thermal lag

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

allowing for fine-tuned pressure control

The minimum interval is 30 minutes

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

Lennox 21L98 Ignitor Electrode Enhanced System Accuracy: Eliminates thermalThe 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