Lennox 27W17 Pressure Switch Optimized Pressure Control: Restores the

Optimized Pressure Control: Restores the airtight seal of the combustion chamber

Exact Fit: Designed as a direct S1-02535354000 replacement to restore factory-spec safety timings without field modifications

If you observe corroded burner ports

preventing the common efficiency drops associated with restricted airflow from generic alternatives

this single-capacitance unit is essential for maintaining motor torque and operational efficiency in various Trane equipment profiles

Lennox 27W17 Pressure Switch Optimized Pressure Control: Restores theThe Lennox 27W17 Pressure Switch is the OEM replacement required for precise inducer fan monitoring in several gas furnace models. This SPST NO (Normally Open) snap action switch is factory calibrated to actuate at 0. 85" W. C., ensuring the combustion air blower is generating sufficient draft before the ignition sequence begins. Designed to replace obsolete part numbers 56M06 and 56M0601, this component features a 101256 01 manufacturer number and