disc-style OEM furnace limit switch engineered for high-precision thermal monitoring in residential and light commercial air handlers

making it the industry standard for systems utilizing HFC and HCFC refrigerants like R-410A

making it suitable for standard hydronic heating and low-pressure steam systems

the internal thermal disc has failed and requires replacement

Always verify the series on the regulator nameplate before installation

Armstrong Furnace R101432-16 Pressure Switch disc-style OEM furnace limit switchWhen the job requires a precise match for Armstrong Air or Allied Air heating units, the Armstrong Furnace R101432 13 Pressure Switch is the mandatory OEM replacement for ensuring safe combustion. This . 55"wc SPST pressure switch is engineered to monitor the negative pressure generated by the inducer motor, verifying a clear flue and adequate draft before the ignition sequence begins. Featuring dual 1 4" barb connections, this switch provides a