This 3-hour HVAC training online video series provides guidance on how to properly use a Friction Chart and/or ACCA’s duct slide rule values for sizing duct in the field. The course concludes with the basic instructions for filling out a Manual D Speedsheet.

A copy of Understanding the Friction Chart and a filled in Manual D Speedsheet sample problem are included in the course package.

For the best results, it is recommended the ACCA Duct Calculation Slide Rule be purchased.