Lochinvar & A.O. Smith 100145023 Combustion Air Fan 30067439-890 Standard mechanical tools like wrenches

Standard mechanical tools like wrenches and screwdrivers are usually sufficient

preventing dry-run conditions in condensate return systems

05" WC pressure switch effectively prevents the heater from firing if the venting system is obstructed or if the inducer fan fails to reach the required static pressure

Larger models like the CGa-7 often require different orifice sizing to maintain safe combustion

While designed for R-134a

Lochinvar & A.O. Smith 100145023 Combustion Air Fan 30067439-890 Standard mechanical tools like wrenchesAs a veteran tech, you know that keeping a high BTU boiler running efficiently depends entirely on the air fuel ratio. The Lochinvar & A. O. Smith 100145023 Combustion Air Fan is a critical replacement component for Power Fin PB and PF series boilers and water heaters. Specifically engineered for 501 through 1300 1302 models, this 115V blower assembly provides the precise static pressure required to overcome heat exchanger resistance and ensure clean