York S1-024-39716-000 Pressure Switch 0.20" WC

The York S1-024-39716-000 Pressure Switch is a precision safety device for HVAC systems, including furnaces and air handlers. It monitors airflow or combustion pressure and closes or opens an electrical circuit at 0.20" WC to confirm proper system conditions. By ensuring the presence of adequate pressure before allowing ignition or blower operation, it enhances safety, prevents damage, and supports reliable system performance. This pressure switch improves equipment protection, reduces the risk of unsafe operation, and contributes to efficient heating and cooling. Ideal for replacement or maintenance, it helps maintain optimal HVAC functionality and system longevity.