Rheem-Ruud 70-21859-04 2-Blades Fan Blades 8"DIA 19°Blade Angle 1/2"Shaft DIA CCW

The Rheem-Ruud 70-21859-04 is a replacement fan blade for use in various HVAC systems, most notably furnaces made by Rheem, Ruud, and possibly other brands. It is a crucial component that aids in the circulation of warm air throughout your home during heating operations. This is how it works. The fan blade is linked to a motor shaft that rotates quickly. The blades' 19-degree angle is specifically intended to efficiently push air through the furnace's heat exchanger. The heat exchanger now warms the air, which is subsequently distributed throughout your home via ducts and vents. This two-blade design achieves a balance of airflow and sound. While multi-blade fans may deliver somewhat more airflow, they also produce more noise. The 8" diameter guarantees it fits within the designated space within the furnace cabinet.