Single-Stage Vent Pressure Switch 1191550

When vent system faults are holding up the job, the Vent Pressure Safety Switch (1191550) steps in with drop-in confidence. This genuine OEM switch closes at approximately –0.68 inches W.C., replacing legacy parts like 1184413 and BA20266, and reliably monitors inducer and flue-gas pressures to keep ignition sequencing and airflow control intact. Designed for direct replacement and field-ready installation, it helps you restore proper venting, satisfy safety protocols and finish the service call with zero guess-work.