Signs You Have Leaky Air Ducts

Most homeowners spot leakage indirectly — through symptoms, not the leaks themselves.

• Some rooms consistently hotter or colder
• Heating or cooling bills climbing year over year
• Dust appearing on registers within days
• System runs constantly but rooms never reach setpoint

Plenum seams, takeoff collars, joints between flex and sheet metal, and where boots meet drywall. Almost never the middle of a run.

Mechanical fasteners, mastic on seams, foil tape where appropriate, and verification with a manometer or smoke test that the leak is actually closed.