Description
The Rheem-Ruud 42-24196-87 is a genuine OEM replacement pressure switch engineered specifically for compatible Rheem and Ruud heating systems. Pressure switches are a critical safety component in modern furnaces and air handlers — they monitor the negative pressure created by the draft inducer motor to confirm proper venting before allowing the ignition sequence to proceed. If the correct pressure is not established, the switch prevents the system from firing, protecting against dangerous flue gas backdrafting and incomplete combustion.
Why Use an OEM Pressure Switch?
Using a genuine Rheem-Ruud OEM part ensures exact fit, calibrated set-point accuracy, and full compatibility with your equipment’s control board and safety logic. Aftermarket substitutes may not match the precise pressure differential required by your specific unit, leading to nuisance lockouts or, worse, unsafe operation.
Key Features
- Genuine Rheem-Ruud OEM replacement part (SKU: 42-24196-87)
- Designed for direct, drop-in replacement in compatible Rheem and Ruud furnaces
- Monitors draft inducer pressure to verify safe venting conditions before ignition
- Precision-calibrated pressure set point for reliable system operation
- Helps prevent nuisance lockouts caused by incorrect pressure sensing
- Supports proper sequencing of the furnace ignition control board
Application
This pressure switch is intended for use in compatible Rheem and Ruud residential and light commercial furnace models. Always verify compatibility with your specific unit’s model and serial number before installation. Refer to the equipment’s wiring diagram and service manual for proper installation procedures.
Installation Notes
- Disconnect power to the unit before servicing
- Match hose port orientation and tubing connections to the original switch
- Inspect inducer motor and pressure tubing for blockages or cracks before replacing the switch
- Verify system operation through a complete heating cycle after installation
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