Installing duct hangers too far apart, causing sagging between supports
1st YearInstallation
Follow SMACNA hanger spacing — typically 8 ft max for rectangular duct and 10 ft for round. When in doubt, add a hanger. Sagging duct causes poor airflow,…
Safer field move
Follow SMACNA hanger spacing — typically 8 ft max for rectangular duct and 10 ft for round. When in doubt, add a hanger. Sagging duct causes poor airflow, condensation, and code violations.
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Can you verify this before I keep going? I’m looking at: Installing duct hangers too far apart, causing sagging between supports. What’s the approved correction for this job?
Do not
Do not hide, force, cover, or “make it work” if this affects safety, access, airflow, rated assemblies, supports, equipment, or inspection. Stop and verify the approved correction.