Lochinvar & A.O. Smith 100145019 Air Fan 321142-301 which can lead to motor

which can lead to motor burnout or insufficient airflow across the heat exchanger

These units are factory-calibrated

This 4-way reversing valve features a 1/2-inch x 3/8-inch ODS (Outside Diameter Sweat) connection configuration

Precise Electrical Compatibility: Native 12VDC coil operation ensures seamless integration with low-voltage DC control circuits and mobile HVAC equipment

Lochinvar & A.O. Smith 100145019 Air Fan 321142-301 which can lead to motorThe Lochinvar 100145019 Combustion Air Fan is a critical replacement component designed for high efficiency hydronic boilers and volume water heaters. Engineered for precise pre mix combustion air delivery, this centrifugal blower assembly ensures optimal air to fuel ratios across various firing rates. Originally sourced under part numbers such as Lochinvar FAN3032, it is compatible with select Knight XL and Copper Fin II models, as well as A. O.