Duct leakage is the loss of conditioned air through gaps or cracks in ductwork. It wastes energy, reduces comfort, and can pull dust or pollutants into the system. Sealing leaks improves airflow balance and efficiency.
/dʌkt ˈliːkɪdʒ/
Duct leakage is the loss of conditioned air through gaps or cracks in ductwork. It wastes energy, reduces comfort, and can pull dust or pollutants into the system. Sealing leaks improves airflow balance and efficiency.
What is duct leakage?
It’s air loss through gaps in ductwork that reduces efficiency and comfort.
Source: The Cooling Company
Sealing leaks improves comfort and reduces energy waste.
After sealing leaks in attic ducts, a homeowner sees steadier room temperatures and lower energy bills.
Use mastic or foil tape for sealing—never cloth duct tape, which fails over time.
“Use mastic or foil tape for sealing—never cloth duct tape, which fails over time.”
Duct sealing is one of the most cost‑effective HVAC upgrades for energy savings.
How do I know if my ducts are leaking?
Uneven temperatures, high bills, or dusty air can indicate leaks.
Is duct leakage testing worth it?
Yes. It quantifies leakage so you can target the biggest losses.
Can duct leakage affect indoor air quality?
Yes. Leaks can pull contaminants from unconditioned spaces into the supply air.
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