Description
Rheem-Ruud -1.20″ w.c. Pressure Switch Assembly
The Rheem-Ruud 42-101956-10 is a genuine OEM pressure switch assembly designed for use in Rheem and Ruud gas furnaces. Rated at -1.20″ w.c. (inches water column), this switch monitors the negative pressure generated by the inducer motor to confirm proper draft and venting before allowing the ignition sequence to proceed — a critical safety function in modern induced-draft and condensing furnace systems.
When the inducer fails to establish the correct pressure differential, this switch prevents the gas valve from opening, protecting the equipment and the occupants from unsafe combustion conditions. Replacing a faulty pressure switch with a direct OEM part ensures reliable, code-compliant operation and restores the furnace to factory-specified performance.
Key Features
- Genuine Rheem-Ruud OEM replacement part
- Rated setpoint: -1.20″ w.c. (inches water column)
- Monitors inducer motor draft pressure for safe ignition sequencing
- Prevents gas valve activation if proper draft is not established
- Direct OEM replacement — no modifications required
- Compatible with Rheem and Ruud induced-draft and condensing gas furnaces
Application
- Designed for use in Rheem and Ruud gas furnace systems
- Replaces failed or out-of-spec pressure switches causing lockout or no-heat conditions
- Verify compatibility with your specific furnace model before installation
Specifications
- SKU / Part Number: 42-101956-10
- Brand: Rheem-Ruud
- Type: Pressure Switch Assembly
- Setpoint: -1.20″ w.c.
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