Manifold Pressure Stability: Ensures proper BTUs per hour (BTUH) delivery to the burners following the Nat-to-LP transition

provided it is installed in a horizontal upright position

Failure is often attributed to contact oxidation or coil burnout

protecting both the technician and sensitive control boards

using an exact OEM HVAC replacement part like the 05-129608-660 is essential for system reliability

York S1-024-34684-000 Pressure Switch Els PW 17895 Manifold Pressure Stability: Ensures properThe York S1 024 34684 000 Pressure Switch is a critical OEM safety component specifically engineered for York 2 stage furnaces. Designed as a dual stage differential switch, this part monitors the furnace draft inducer motor to ensure combustion gasses are properly vented before allowing the gas valve to energize. Technical specifications include a high stage deactivation rating of 1. 4 in WC and a low stage deactivation at 0. 4 in WC, ensuring