Rheem-Ruud 42-101443-91 Pressure Switch

The Rheem-Ruud 42-101443-91 Pressure Switch is a mission-critical safety component designed for RGRS and RGRT series furnaces. This OEM genuine factory authorized part features a precise 0.60" WC (Water Column) setpoint, ensuring your high-efficiency gas furnace maintains the correct inducer motor draft before ignition. Built with a Single Pole Single Throw (SPST) configuration, it provides a normally open contact that closes once the negative pressure threshold is met, preventing unsafe operation during flue blockages or intake restrictions.

For technicians in the field, this kit is more than just a switch; it is a full furnace pressure switch replacement solution. It includes the 1/4" barb connection switch, silicone rubber tubing, wire lead assemblies, and cable ties to streamline the HVAC pressure switch installation. This part replaces older Rheem and Ruud numbers, including 42-21582-91 and 42-101443-11, making it a versatile Rheem furnace repair part for various 80% and 90%+ AFUE models. Its high-temperature resistance and self-cleaning contacts ensure long-term stability in demanding combustion environments.

• Direct OEM Compatibility: Specifically engineered for Rheem-Ruud RGRS and RGRT series, ensuring exact electrical and mechanical fit.
• Precision Calibrated: Factory-set at 0.60" WC for accurate sensing of vent pressure and flue gas safety.
• Complete Installation Kit: Comes with silicone tubing, wire connectors, and zip ties to replace brittle or damaged existing components.
• Simplified Wiring: The SPST switch design and included leads facilitate a quick swap-out during emergency service calls.
• Enhanced Durability: Constructed with corrosion-resistant materials and a rugged housing to withstand industrial-grade furnace cycles.

What are the symptoms of a failing furnace pressure switch?
Common signs include the inducer motor running without the burners igniting, or the furnace throwing a "pressure switch stuck open" fault code. This typically happens when the diaphragm fails or the 0.60" WC threshold is no longer being accurately measured.

Is this switch compatible with other furnace brands?
While this is a Rheem-Ruud OEM part, it is used in various equipment manufactured under the Rheem umbrella. Always verify the part number 42-101443-91 and the WC rating against your existing unit's specifications to ensure proper induction air proving.

Does this kit include everything needed for a replacement?
Yes, the kit includes the SPST pressure switch, high-temp silicone tubing, wire leads, and a tubing connector, addressing the most common failure points in the pressure sensing circuit.

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.