ensuring a tight seal on various duct geometries

This factory-authorized replacement part features a 3-inch sensing element and a factory-integrated 30-foot lead wire

moisture and non-condensables are the primary enemies of compressor longevity and heat transfer efficiency

making it a versatile choice for standard residential and light commercial A/C repair and furnace maintenance

MARS 43370 Pressure Switch 321894-708 ensuring a tight seal onThe MARS 43370 Pressure Switch is a mission critical fan cycling switch designed for precision condenser control in high performance cooling systems. This SPST open fall switch features fixed settings of 180 240 PSI, specifically engineered to open on a pressure drop to 180 PSI and close on a pressure rise to 240 PSI. This sequence ensures optimal head pressure regulation, preventing compressor short cycling and maintaining system efficiency during