Rheem-Ruud 42-24196-83 Pressure Switch

The Rheem-Ruud 42-24196-83 Pressure Switch is a critical safety component engineered for precise induced draft blower monitoring in high-efficiency gas furnaces. Rated at -1.11" WC, this SPST (Single Pole Single Throw) switch ensures the inducer motor is generating the exact negative pressure required to vent flue gases safely before the ignition sequence begins. Designed with a standard 1/4" barb connection for secure pneumatic tubing attachment, this OEM replacement pressure switch provides the reliability field technicians require for Rheem, Ruud, WeatherKing, and Corsaire systems. As a furnace air pressure switch, it effectively replaces legacy part numbers, including 42-24196-03. Its durable construction is intended to withstand the high-cycle demands of residential heating applications, maintaining system safety and airflow control to prevent combustion issues related to restricted venting or mechanical failure.

• Precise Pressure Calibrations: Factory-set to -1.11" WC to match original equipment specifications for accurate airflow detection.
• Universal Compatibility: Serves as a direct OEM replacement for various models within the Rheem-Ruud family, including WeatherKing and Corsaire units.
• Standardized Integration: Features a 1/4 inch barb and SPST configuration for straightforward wiring and tubing connection during HVAC maintenance.
• Enhanced Safety: Verified furnace safety sensor that prevents operation if proper draft induction is not achieved.

• How do I know if my Rheem pressure switch is failing? If the inducer motor runs but the furnace fails to ignite, often displaying a flash code for "pressure switch stuck open," the 42-24196-83 may need testing with a manometer.
• Can I use a universal switch instead of the 42-24196-83? Using an exact OEM pressure switch is vital. These switches are calibrated to specific water column inches; installing a switch with a different set point can lead to unsafe operation or frequent lockout codes.
• What does SPST mean for this HVAC part? It stands for Single Pole Single Throw, meaning this is a simple on/off switch that closes the circuit once the -1.11" WC vacuum threshold is reached.

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.