Description
The Rheem-Ruud 42-105601-105 is an OEM replacement pressure switch kit designed for use with compatible Rheem and Ruud gas furnaces. Rated at -0.35 inches of water column (in. WC), this pressure switch monitors the negative pressure created by the draft inducer blower to verify safe combustion venting conditions before allowing the gas valve and ignition sequence to proceed.
Key Features
- OEM Rheem-Ruud replacement pressure switch kit
- Set point: -0.35 in. WC
- Monitors draft inducer operation to confirm proper venting
- Helps prevent unsafe furnace operation if venting is blocked or inducer fails
- Direct OEM replacement for accurate fit and reliable performance
- Includes all components needed for a complete kit installation
How It Works
The pressure switch is a critical safety component in gas furnaces. It senses the negative pressure (vacuum) generated by the draft inducer motor. If the inducer fails to reach the required pressure differential — or if the flue becomes blocked — the switch remains open, preventing the furnace from firing. This protects against carbon monoxide buildup and other combustion hazards.
Application
- Compatible with select Rheem and Ruud gas furnace models
- Ideal for HVAC technicians performing warranty or service repairs
- Verify compatibility with your specific furnace model number before installation
Why Choose OEM?
Using a genuine Rheem-Ruud OEM pressure switch kit ensures the correct set point, connector type, and tubing configuration for your specific unit — reducing callbacks and ensuring the furnace operates within manufacturer specifications.
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