The Amana-Goodman 0130F00504 SPST Pressure Switch is a reliable safety control component designed to monitor air pressure within compatible Amana and Goodman gas furnaces and HVAC heating systems. It works by detecting proper airflow and venting conditions, allowing the furnace to operate only when safe pressure levels are achieved. This single-pole, single-throw (SPST) pressure switc... https://www.partshnc.com/6wc-spst-pressure-switch-2