Lennox 70L54 Pilot Assembly 30067439-890 4" WC spec to ensure

4" WC spec to ensure the combustion air pressure switch is reacting correctly to the inducer motor’s vacuum

They are electrically and physically identical

Whether you are servicing a Dunkirk gas boiler or a Utica heating unit

Built with a compact footprint to fit tight furnace vestibules

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