What does removing the cut-off plate from a blower assembly affect?

Removing the cut-off plate from a blower assembly primarily affects airflow. The cut-off plate serves to direct and control the airflow within the assembly. By removing this component, the intended path for the airflow is disrupted, which can lead to increased or altered airflow patterns. This disruption can significantly reduce the system's efficiency in directing air where it is needed, potentially leading to uneven distribution or increased turbulence.

While the other options might be indirectly affected or have some relation to airflow, such as energy efficiency and temperature control being impacted by inadequate air movement, the most direct impact of the removal of the cut-off plate is on the airflow itself. Air filtration may also be impacted because improper airflow can allow more particles to bypass filtration, but the immediate and most significant effect is on how air is moved through the system.