Amana-Goodman B1370150 SPST Air Pressure Switch 0.85" PF

The Amana-Goodman B1370150 Single Pole Single Throw air pressure switch is an essential used in different HVAC systems particularly in gas furnaces of Goodman and Amana. This switch is an essential in controlling the flow of airflow in order to enhance safe operation of the furnaces. Within the switch, a diaphragm reacts to pressure variations. When furnace inducer motor also referred to as draft inducer or combustion blower is working properly it draws a negative pressure or a vacuum within the venting system. This negative pressure tends to act on the diaphragm in the pressure switch. If the negative pressure gets to the established limit of 0.85” PF or inches of water column pressure.