Free to use · No lead fees
Duct sealing near you.
Seal leaky ducts so cooled and heated air reaches your rooms instead of the attic. Leaky ducts are a common cause of uneven temperatures and high bills.
- Free for homeowners
- No lead fees for pros
- Rankings can't be bought
What's included
Duct sealing
- 1
Inspecting ducts and connections
- 2
Sealing joints with mastic or foil tape
- 3
Reconnecting loose runs
- 4
Testing airflow at vents
What's included
- Inspecting ducts and connections
- Sealing joints with mastic or foil tape
- Reconnecting loose runs
- Testing airflow at vents
Signs it's time
- Rooms that never cool or heat evenly
- Dusty house even after cleaning
- High bills with no system problem
Typical price
$1,000–$6,000
duct sealing · national average
How duct sealing is priced
Usually priced by the size of the system and how accessible the ducts are. Prices vary by area, so compare quotes from two or three local pros for the same scope.
Questions to ask before you hire
- 01Will you test for leaks before and after?
- 02What sealant do you use?
- 03Do any ducts need replacing instead?
FAQ
Duct sealing questions
How much does duct sealing cost?
Duct sealing typically costs $1,000–$6,000 nationally, according to HomeGuide. Prices vary by area and by the job, so compare quotes from two or three local pros for the same scope.
Is duct tape good for sealing ducts?
Not for long. Pros use mastic or foil tape rated for ducts.
Does duct sealing lower bills?
It can, especially when ducts run through a hot attic.
Homeowner guides
AC and heating repair advice
- AC running but not cooling? 6 things to check
- How often should you change your air filter?
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- AC frozen up? Why it ices over and what to do
- AC leaking water inside? Common causes and fixes
- Furnace blowing cold air? What to check first
- How to hire an HVAC contractor
Areas we serve
Find duct sealing pros near you
Pick your area to see local pros and typical prices for this job.
- Dallas–Fort Worth
- More metros are on the way. Pros in any area can already be listed, and we're adding new cities as local pros join.
Get free quotes for duct sealing
Tell us about the job once. We match you with up to three local pros. No account, no fee, and your request is never resold.