Most 100208251 units are standard control transformers

ensuring the 1/2-inch shaft and mounting lugs align perfectly

meeting the latest UL standards for smoke control systems

eliminating the need for limit switches and protecting the gear train

reducing energy waste and preventing bypass flow when the valve is commanded closed

Lochinvar & A.O. Smith 100145009 Fan Assembly 30067439-890 Most 100208251 units are standardThe Lochinvar & A. O. Smith 100145009 Fan Assembly is a critical combustion blower component designed for high efficiency commercial boilers and water heaters. Also identified by part number FAN3037, this combustion fan motor provides the precise air to fuel ratio required for stable ignition and consistent thermal output. Engineered to withstand high static pressures and continuous duty cycles, the 100145009 blower ensures optimal flame signals and