Lochinvar & A.O. Smith 100290352 Limit 326070-701 OEM Compatibility: Genuine Lennox replacement

OEM Compatibility: Genuine Lennox replacement part ensures exact fitment and electrical alignment with existing furnace control boards and safety loops

Key Benefits ASME Section IV Certified: Specifically rated for low-pressure steam heating boiler safety with National Board capacity listing

Maintains proper airflow through outdoor condensing units

Reliable Performance: Built with high-quality electronic components to replace older mechanical controls for superior accuracy and longevity

Lochinvar & A.O. Smith 100290352 Limit 326070-701 OEM Compatibility: Genuine Lennox replacementThe Lochinvar & A. O. Smith 100290352 Limit Switch is a critical safety component designed for high performance hydronic and domestic hot water systems. This 220 degree high limit switch acts as a primary fail safe, monitoring internal temperatures to prevent thermal runaway. Engineering specifications confirm this is a manual reset limit switch, requiring a technician's physical intervention to restore operation after a tripa vital feature for