Manual D® or duct design: How are you calculating airways?
Posted on:
Member Exclusive Content
Login & continue reading at acca.org »
Something I’ve observed for quite some time, but it seems to need more attention lately, is how we are actually sizing airways— commonly referred to as ductwork. I appreciate when people say they’re using the Manual D® process when discussing duct designs.
Manager of HVAC Design Education at ACCA
Ed Janowiak is ACCA's Manager of HVAC Design Education and can be reached at ed.janowiak@acca.org or 703-824-8878.
Latest posts by Ed Janowiak (see all)
- Hey Ed, why does Manual J® use one person per bedroom plus one in the data collection part of the survey? - September 3, 2025
- Hey Ed, does placing the outdoor unit for a HP or CAC under the house make sense if there is enough clearance above for airflow? - August 27, 2025
- Hey Ed, should we try to place the outdoor unit for a HP or CAC in the shade? - August 20, 2025
Posted In: ACCA Now, Aside, Manual D, Residential, Residential Technical Tips
