How do you read cfm on a air handler blower?

To read the CFM (cubic feet per minute) on an air handler blower, you typically need to refer to the manufacturer's specifications or the blower's rating label, which indicates its airflow capacity. CFM can also be measured using an anemometer or airflow meter placed at the supply vent to gauge the actual airflow. Additionally, you can calculate CFM using the formula: CFM = (Air Velocity in feet per minute) x (Area of the duct opening in square feet). Always ensure the system is set to the desired speed for accurate readings.