Lochinvar & A.O. Smith 100093809 Door Assembly 320720-756 Precision Engineering: The counterclockwise lead

Precision Engineering: The counterclockwise lead end rotation and Fasco U62B1 motor type ensure exact mechanical alignment with original factory specifications

Low Air Consumption: Engineered for efficiency with a

Common Questions What is the primary difference between the T-4054-1 and T-4054-2

Safety Restored: Includes a factory-set electrode gap and orifice size to provide the optimal natural gas pilot assembly flame for consistent main burner ignition

The manual reset is a safety feature that prevents the switch from automatically re-closing after a pressure drop or rise

Lochinvar & A.O. Smith 100093809 Door Assembly 320720-756 Precision Engineering: The counterclockwise leadThe Lochinvar & A. O. Smith 100093809 Door Assembly is a critical combustion chamber component engineered for natural gas water heater models, specifically designed for 40S40 and 50T50 series units. As a veteran grade manifold door assembly, this part provides the essential seal required to maintain proper atmospheric pressure and thermal containment within the burner chamber. It features an integrated door switch that serves as a vital safety