The Amana-Goodman 0130F00509 Dual Pressure Switch is a genuine OEM safety component designed to monitor airflow and venting pressure in HVAC heating systems. It works by sensing both positive and negative pressure levels, ensuring the furnace operates only when proper airflow and combustion venting conditions are met. Commonly used in Amana and Goodman gas furnaces, this switch helps ... https://www.partshnc.com/dual-pressure-switch-5