The Rheem pressure switch is an essential component in Rheem HVAC systems, designed to monitor air pressure and ensure safe and efficient furnace operation. This switch detects airflow within the furnace or air handler, activating or deactivating based on preset pressure levels to safeguard against overheating or airflow issues. The Rheem furnace pressure switch integrates seamlessly for optimal performance. It acts as a critical control mechanism, halting furnace operation if pressure levels deviate, thereby protecting the system and enhancing longevity.