Description
The Rheem 42-24166-89 Dual Pressure Switch is designed to monitor negative pressure levels in HVAC systems with set points of -0.40″WC and -0.20″WC. This durable switch helps maintain safe airflow, ensures proper system operation, and protects equipment from improper venting conditions.
Key Features
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Dual pressure settings: -0.40″WC and -0.20″WC
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Monitors negative pressure in HVAC systems
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Ensures proper airflow and safe operation
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Durable construction for long-lasting performance
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Compatible with select Rheem and Ruud HVAC units






