The Rheem-Ruud 42-101956-11 is a genuine OEM pressure switch designed as a direct replacement for compatible Rheem and Ruud heating systems. Pressure switches are a critical safety component in gas furnaces, monitoring the negative pressure created by the draft inducer motor to verify proper venting before allowing the ignition sequence to proceed. A failed or out-of-spec pressure switch can prevent furnace operation and trigger fault codes, making prompt replacement with an exact OEM part essential for restoring reliable performance.
Key Features
- Genuine OEM Rheem-Ruud replacement pressure switch
- Direct factory-spec replacement — no modifications required
- Monitors inducer draft pressure to ensure safe ignition sequencing
- Helps protect against improper venting and combustion hazards
- Designed for precise fit and reliable operation in compatible Rheem and Ruud furnace models
Application
- Compatible with select Rheem and Ruud gas furnace models — verify compatibility with your unit’s model and serial number before ordering
- Intended for use by qualified HVAC technicians
Why Choose OEM?
Using a genuine Rheem-Ruud OEM pressure switch ensures the component meets the original design specifications for your equipment. Aftermarket substitutes may not match the exact set-point or port configuration, potentially causing nuisance lockouts or unsafe operation. The 42-101956-11 delivers the precise fit and calibration your system requires.








