50.00 Dollar US $ · Rheem 42-101233-81 SPST Pressure Switch 0.35" PF

Published date: February 26, 2026 9:52 am

Location: 700 Nicholas BLVD Suite 105 Elk Grove Village IL 60007, chicago, IL, United States

The Rheem 42-101233-81 SPST Pressure Switch 0.35" PF is a single-pole, single-throw (SPST) pressure switch designed for reliable operation in gas-fired HVAC systems. Rated at 0.35" pressure, it monitors air pressure within the furnace’s draft inducer system to ensure proper venting before ignition. When the correct pressure is detected, the switch closes to allow safe startup. Commonly used in Rheem furnaces and compatible heating equipment, it enhances system safety, improves performance, and helps prevent damage caused by improper airflow or vent blockages.

For an efficient and reliable HVAC system, the Rheem SPST Pressure Switch is a great choice for optimal system performance.


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  • Rheem 42-101233-81 SPST Pressure Switch 0.35

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