common in most Nordyne-manufactured gas furnaces and electric air handlers

Superior Flame Stability: The engineered orifice and port design prevent lifting or flickering

It is essential to verify matching port sizes on the compressor or oil line before installation

Contractor-Ready Installation: Features 18-inch high-temperature fiberglass insulated leads and standard 1/4-inch terminals for a rapid swap-out

Lochinvar & A.O. Smith 100111064 Air Switch L99H008 common in most Nordyne-manufactured gasThe Lochinvar & A. O. Smith 100111064 Air Switch is a critical safety component designed for precise pressure sensing in high efficiency boilers and water heaters. Engineered with a 6. 0" WC to 5. 0" WC set point, this differential pressure switch ensures the combustion blower is moving sufficient air before allowing the ignition sequence to proceed. As a genuine OEM replacement part, it maintains the precise calibration required to prevent nuisance