Amana-Goodman 1370910S Auto Limit Switch 140°F-170°F

The Amana-Goodman 1370910S Auto Limit Switch is an essential safety part in gas furnaces and some other HVAC heating appliances. It is aimed at avoiding over heating of equipment, which may cause fires, or even carbon monoxide leakage. This switch is a safety switch that turns off the furnace in case the temperature inside the heat exchanger is high. The limit switch has a bimetallic disc or element as its component. When the temperature within the furnace's heat exchanger rises beyond a predetermined threshold in this case, between 140°F and 170°F, the bimetallic disc warps or snaps into a different shape.