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If your valve body is intact but experiencing internal leaks or mechanical sticking
this specific assembly (100112345) is hard-indexed with a #39 orifice designed exclusively for natural gas water heaters
it provides the precise airflow required for optimal heat rejection across the condenser coils
Can I use a universal pressure switch to replace this Lennox part
this component ensures reliable switching of the compressor and fan motor circuits
Lennox 10J73 Pressure Switch 320788-703 If your valve body isThe Lennox 10J73 Pressure Switch (Catalog Number 10J73, Model 103827 01) is a critical safety component designed for furnace applications to ensure the inducer motor is moving combustion air effectively. As a single pole, normally open switch, it is calibrated to a fixed set point of 0. 25 PF (inches water column), making it a precise replacement for the combustion air prover in Lennox G21, G24, G27, G28, G30, and G37 series furnaces. This HVAC