The Rheem-Ruud 42-105601-25 SPST Pressure Switch -0.35" WC is a single-pole, single-throw pressure switch engineered for gas-fired furnaces and heating systems. Rated at -0.35" WC, it monitors negative air pressure within the draft inducer to confirm proper venting before ignition. Once the required pressure is detected, the switch closes to permit burner operation. Used in Rheem and Ruud HVAC equipment, it improves operational safety, supports efficient combustion, minimizes system shutdowns, and helps protect components from damage caused by vent blockages or improper airflow.
For an efficient and reliable HVAC system, the Rheem-Ruud SPST Pressure Switch is a great choice for optimal system performance.
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