Armstrong Furnace R101432-15 Pressure Switch

The Armstrong Furnace R101432-15 Pressure Switch is a critical safety component calibrated to a -.85" WC fixed set point. Designed for induced draft furnaces, this SPST (Single Pole Single Throw) switch monitors the pressure differential within the combustion chamber to ensure the inducer motor is moving sufficient air for safe ignition. Featuring dual 1/4" barb connections, this pressure switch provides a secure fit for standard pneumatic tubing, preventing vacuum leaks that lead to nuisance trips or furnace pressure switch lockout codes. As an OEM Armstrong replacement part, the R101432-15 maintains the precise switching logic required by the integrated furnace control board. Whether you are troubleshooting a furnace not igniting or a failing draft inducer pressure switch, this component ensures the narrow tolerances of high-efficiency gas furnaces are met. The R101432-15 is engineered for high-cycle reliability in residential heating applications, specifically targeting Armstrong and Ducane HVAC units.

• Factory Calibrated: Exact -.85" WC set point ensures compatibility with specific blower performance curves.
• Reliable Switching: SPST contact configuration designed for low-voltage control circuits.
• Standardized Fittings: Dual 1/4" hose barbs allow for quick, tool-free pneumatic line connection.
• OEM Integrity: Direct replacement for Armstrong R101432-15, eliminating the need for universal brackets or field adjustments.

What causes this pressure switch to trip?
Common causes include a restricted flue pipe, failing inducer motor, or moisture buildup in the sensing lines. Always verify the actual pressure with a manometer before replacing the switch.

Can I use a switch with a different WC rating?
No. Using a switch with a different inches of water column rating can result in unsafe combustion or frequent short cycling. Always match the OEM specification of -.85" WC.

Does this switch handle high voltage?
This is a pilot-duty switch intended for 24VAC control circuits; it is not designed to interrupt line voltage loads.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.