Lennox 74W76 Limit Switch 321042-401 This differential pressure switch features

This differential pressure switch features a dual-switching design with two independently adjustable SPDT snap-acting switches mounted on a single foot bracket

Always verify the fan blade pitch before installation to ensure proper airflow direction across the coil

and 50/50 glycol solutions with a 11

Designed for maximum precision in industrial and commercial HVACR applications

Lennox 74W76 Limit Switch 321042-401 This differential pressure switch featuresThe Lennox 74W76 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial Lennox HVAC systems. As a veteran grade furnace high limit switch, this OEM part is calibrated with a 200F cut out temperature to prevent heat exchanger damage and ensure safe operational cycles. This auto reset switch (Part #102135 11) is engineered for high demand environments, offering reliable continuity for