Replacement Motor

This OEM-certified air pressure switch is engineered for YORK furnace and HVAC systems, delivering reliable combustion and ventilation airflow monitoring in residential and commercial heating applications. Designed as a direct replacement for YORK model S1-02435286000 and compatible alternatives, this component serves a critical safety function by ensuring proper draft creation before ignition and blower motor operation, effectively reducing the risk of unsafe combustion conditions and inadequate airflow scenarios. The switch features a Single Pole Normally Open contact configuration with close-on-fall operation, activating precisely when system pressure drops to the specified threshold. Operating at a pressure rating of negative 0.9 inches water column, this unit is factory-calibrated to trigger at the exact pressure differential required for safe system startup and operation. The compact design measures 4.6 by 3.8 by 3.75 inches and weighs just 2.4 ounces, allowing for straightforward installation in existing equipment without requiring substantial modifications. Ideal for HVAC technicians, contractors, and facility managers performing routine maintenance or emergency repairs, this component provides the dependable performance required in critical safety applications. Stock this essential replacement part for quick turnaround on service calls and preventive maintenance programs.