Reznor 193810 Switch 30067439-890 The AT-11-401 is engineered with

The AT-11-401 is engineered with sufficient venting to allow for natural convection

The module is rated for 1 HP at 120 VAC and 2 HP at 240 VAC

Is this kit compatible with models using stainless steel burners

ensuring the pressure switch hose is clear of obstructions and the inducer housing is pulling the rated vacuum is essential before installation

Replacing a bent blade immediately prevents catastrophic motor or coil damage

Reznor 193810 Switch 30067439-890 The AT-11-401 is engineered withThe Reznor 193810 is a heavy duty air proving switch pre mounted in a protective enclosure, engineered specifically for Reznor HVAC systems. Designed for reliability in demanding commercial and industrial environments, this differential pressure switch acts as a primary safety mechanism to verify proper combustion airflow before allowing the ignition sequence to proceed. It serves as a direct OEM replacement for legacy part numbers including Reznor