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4" WC spec to ensure the combustion air pressure switch is reacting correctly to the inducer motor’s vacuum
providing the level of reliability required for heavy-duty commercial maintenance and system overhauls
They are electrically and physically identical
Whether you are servicing a Dunkirk gas boiler or a Utica heating unit
and Efficiency+ boiler models
Lennox 70L54 Pilot Assembly 30067439-890 4" WC spec to ensureThe Lennox 70L54 Natural Gas Pilot Assembly is a critical OEM replacement component engineered for precision ignition in residential heating systems. This furnace pilot burner is a direct replacement for the Lennox 70L5401 and Honeywell Q3450 Q3400A series, ensuring seamless HVAC part compatibility across a wide range of equipment. It is primarily utilized in Lennox Aire Flo AF80 and AF90 series gas furnaces, where maintaining a stable flame for the