Trane BLW0343 Blower Assembly

The Trane BLW0343 is a blower assembly that is part of furnaces as well as air handler fans. It has a protective enclosure around a fan and motor assembly. The most likely configuration of an axial fan, with the blades driving directly perpendicular to the BLW0343 axis, is similar to centrifugal fans, which have angled blades that push air radially. This axial arrangement effectively draws the heat exchanger in the furnace or the cooling coil in the air handler into the cabinet. The HVAC systems can maintain enough airflow for the motor's ability to spin the fan blades at the necessary speed.