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Enhanced System Accuracy: Eliminates thermal lag
verifying the specific S1-025-38948-000 part number is recommended for guaranteed compatibility
it is recommended to pour approximately one cup of water into the assembly to establish the initial water seal before cycling the furnace
allowing for fine-tuned pressure control
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
