Armstrong Furnace R101432-12 Pressure Switch

The Armstrong Furnace R101432-12 Pressure Switch is a critical OEM safety component engineered for precise inducer draft monitoring in Armstrong Air and Allied Air heating systems. Featuring a factory-calibrated -.45" WC set point, this SPST (Single Pole Single Throw) switch ensures the combustion blower is generating sufficient negative pressure before allowing the ignition sequence to proceed. As a direct HVAC replacement pressure switch for discontinued models IS20102-3135 and R45695-008, it eliminates mounting and calibration field issues. The dual 1/4" barb connection design provides a secure seal for pneumatic tubing, preventing vacuum leaks that common universal "will-fit" switches often suffer from. Built to handle the high-heat environment of a furnace burner cabinet, this Armstrong 101432-12 maintains tight tolerances to prevent nuisance tripping and ensure reliable furnace pressure switch troubleshooting and repair.

Key Benefits for Contractors:

• Direct OEM Fit: Drop-in replacement for Armstrong Air R101432-12, ensuring identical electrical specs and pressure trip points.
• Precision Calibration: Fixed -.45" Water Column setting provides accurate safety interlocking for high-efficiency gas furnaces.
• Broad Compatibility: Supersedes older part numbers including IS20102-3135 and R45695-008.
• Robust Construction: Designed with dual 1/4 inch barb ports for reliable vacuum line attachment in confined furnace cabinets.

Common Questions:

Can I use a universal adjustable pressure switch instead of the R101432-12?
While adjustable switches exist, we recommend this OEM -.45" WC pressure switch to ensure the system operates within the manufacturer's specified safety parameters, as incorrect set points can lead to incomplete combustion or rollout.

What are the symptoms of a failing Armstrong pressure switch?
Common indicators include the inducer motor running continuously without ignition, or the furnace control board flashing a "pressure switch stuck open" or "stuck closed" fault code.

Is this switch compatible with LP (Propane) and Natural Gas units?
Yes, the R101432-12 monitors air pressure in the combustion assembly and is compatible with both fuel types, provided the furnace requires a -.45" WC SPST switch.

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.