Signs Your Ductwork Needs Attention

Duct problems develop gradually and rarely announce themselves directly. These are the signs worth paying attention to.

  • Rooms that will not balance regardless of runtime. One bedroom runs hot all summer while the rest of the house is comfortable. That is almost always a duct problem in that branch, not the equipment.
  • Energy bills climbing without a change in how you use the system. Air escaping into the attic means the unit keeps running past when it should. The bill reflects every cubic foot it lost.
  • Dust accumulating faster than it used to. A return duct gap pulls attic air into the system before your filter gets a chance at it.
  • Weak airflow from specific registers. If certain rooms have always gotten less air, the duct serving them may have been undersized or improperly routed from the start.
  • Rattling, popping, or whooshing sounds when the system runs. A section that has come loose or a connection under stress makes noise. It is worth having it looked at before it fails completely.
  • A musty smell when the system runs. Air pulled through a gap near insulation or drywall carries odors into the living space.
  • The ductwork is original to a home built before the mid-1990s and has never been inspected. Sizing standards and materials have changed. Older systems were often not sized for the equipment running through them now.