Rheem-Ruud 42-24196-84 Pressure Switch

For field technicians and mechanical contractors, the Rheem-Ruud 42-24196-84 Pressure Switch is the direct OEM replacement engineered to maintain precise safety parameters within gas furnaces. This assembly is factory-calibrated to a -1.50" WC setpoint, serving as the critical watchdog for proper inducer motor performance and flue venting. Featuring a 1/4" barb connection for secure pneumatic tubing attachment and a Single Pole Single Throw (SPST) configuration, this switch ensures the combustion circuit remains open if pressure falls below the safe threshold, preventing hazardous operation.

Built for durability in high-demand environments, this switch kit often includes necessary silicone tubing and wire assemblies to streamline field installation. It is compatible with a wide range of furnace series, including RGFD, RGRA, RGRJ, RGSA, RGTA, and RGTJ. When diagnosing pressure switch faults—often indicated by diagnostic codes for open pressure switches—this OEM Rheem furnace part is the standard for restoring reliable ignition sequences without the reliability risks associated with universal after-market alternatives.

• Precise OEM Calibration: Pre-set at -1.5" WC to match factory specifications for Rheem-Ruud gas furnaces, ensuring local safety compliance.
• Complete Installation Kit: Typically bundled with wire assemblies and high-temp silicone tubing to eliminate secondary trips for small components.
• Universal Compatibility: Validated for use across multiple premium series such as RGRA and RGTJ, reducing inventory complexity for common service calls.
• Rugged SPST Design: Engineered with high-quality internal diaphragms and contacts to withstand thousands of cycles under varied thermal loads.
• Simplified Connection: Standard 1/4 inch barb allows for a leak-free, press-fit connection with industrial-standard vacuum lines.

• What does it mean if the pressure switch stays open? This usually indicates an obstruction in the vent pipe, a failing inducer motor, or a cracked heat exchanger. Always verify the -1.5" WC pressure drop with a manometer before replacing the switch.
• Is this compatible with older part numbers? Yes, the 42-24196-84 is the current replacement for discontinued numbers 42-24012-05, 42-24196-04, and 42-101956-04.
• How do I ensure a proper seal during installation? Ensure the 1/4" barb connection is free of debris and that the silicone tubing is pushed fully onto the port to prevent false pressure readings.

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.