York Parts S1-02435286000 Gas Furnace Air Pressure Switch

Gas Furnace Air Pressure Switch from York Parts S1-02435286000 ensures safe, reliable furnace operation by monitoring airflow and triggering a shutoff when drafts are insufficient. This switch is a SPNO (Normally Open) air pressure switch with a 0.90 setting, designed to protect your heating system and improve performance. It replaces the older 024-27637-000 part, making it a straightforward upgrade or repair option for compatible York gas furnaces.

Designed for easy installation and durable service, this pressure switch uses standard terminals and rugged construction to withstand year-round furnace cycles. When paired with the correct control board, it delivers accurate readings and quick response to airflow changes, helping to prevent unsafe ignition and furnace short-cycling. This makes it a dependable replacement part for York gas furnaces and other compatible systems.

• Direct replacement for 024-27637-000 to fit York gas furnaces
• SPNO configuration for reliable interrupt when airflow changes
• 0.90 pressure setting for accurate safety control
• Durable construction designed for long service life
• Easy installation with standardized terminals