Trane SWT1999 Pressure Switch Els PW 17895 maintaining the correct airflow through

maintaining the correct airflow through the coil for consistent system performance

Corrosion Resistance: Engineered to resist oxidation

which simplifies wiring by providing a dedicated terminal housing for the lead connections

allowing for efficient opening while ensuring rapid closure when the pressure differential is lost

minimizing nuisance service calls

Trane SWT1999 Pressure Switch Els PW 17895 maintaining the correct airflow throughThe Trane SWT1999 is a critical SPDT differential pressure switch engineered for precision monitoring in residential and commercial HVAC applications. As an OEM Trane replacement part, this single pole double throw switch maintains system safety by detecting pressure variances across heat exchangers and inducer assemblies. Operating on a 0. 43 PSI set point, the SWT1999 ensures the inducer motor establishes proper draft before ignition, effectively