Description
The Rheem-Ruud 42-101447-86 is a genuine OEM pressure switch engineered as a direct replacement for compatible Rheem and Ruud furnace and air handler systems. Designed to monitor negative pressure generated by the draft inducer motor, this switch confirms proper venting before allowing ignition to proceed — a critical safety function that protects equipment and occupants alike.
Key Features
- Genuine Rheem-Ruud OEM replacement part — ensures precise fit and function
- 1.80″ WC (inches of water column) set point for accurate pressure sensing
- Monitors draft inducer operation to verify safe flue gas venting
- Prevents ignition sequence if proper negative pressure is not established
- Direct drop-in replacement — no modifications required
- Built to Rheem-Ruud quality and reliability standards
How It Works
The pressure switch is a normally open safety device that closes when the draft inducer creates the correct negative pressure within the system. If the switch does not detect the proper pressure — due to a blocked flue, failed inducer motor, or other venting issue — it will prevent the gas valve from opening, stopping the ignition sequence and protecting the system from unsafe operation.
Application
- Designed for use in compatible Rheem and Ruud residential and light commercial furnaces
- Consult your equipment’s service manual or parts list to confirm compatibility before ordering
Specifications
- Part Number: 42-101447-86
- Brand: Rheem-Ruud
- Set Point: 1.80″ WC (inches of water column)
- Type: Draft/Inducer Pressure Switch
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