Signs of leaky or poorly performing ducts
- Rooms that are always hotter or colder than others
- Dusty air or visible gaps and disconnected ducts
- High energy bills with no other explanation
- Ducts in an attic, crawlspace or basement that feel hot or cold
Duct leakage testing
A technician can pressurize the duct system with specialized equipment and measure how much air escapes. Results show how leaky the system is and help prioritize repairs.
Duct sealing
Sealing typically uses mastic or approved tape at joints and connections, and sometimes added insulation. Some areas have standards or incentives for duct sealing, so ask your contractor and check locally.
What to ask
Ask whether testing is done before and after sealing, what materials are used, and what results you can expect. We're a referral service, not a contractor. We can help you look for independent local contractors, but we can't promise availability, pricing or response times.