Crushed runs, disconnected sections, and duct laid out for a floor plan the house doesn't have anymore.
Flexible duct crushed under stored items in a crawlspace, a run knocked loose during other attic work, or duct that was cut and never properly reconnected after a remodel all show up the same way: a register with weak or no airflow that sealing alone won't fix. These need physical repair — reconnecting, resupporting or replacing the damaged section — not another pass with mastic.
Replacement comes up on older, undersized or poorly routed duct systems, sometimes original to a house that has since been remodeled or added onto, where the branch feeding a room was never sized for what that room needs. Where that's the finding, you'll hear it as a duct problem rather than being told the fix is a bigger furnace.
Describe the problem and we'll tell you whether it's cleaning, sealing, repair, or not a duct problem at all.
Get Matched With a Duct ContractorA short description is enough — we'll follow up to sort out what it actually needs.