San Jose, CADuct Sealing in San Jose, CA
Call (408) 833-6715Duct sealing in San Jose homes
One room never gets warm. The system runs long. Dust returns a week after cleaning. These symptoms usually point to the same place: air leaving the duct before it reaches the register. A disconnected boot above a ceiling register is the classic cause here. The flex collar slips off the sheet metal, and conditioned air dumps straight into the attic.
What we seal depends on which generation of duct you have. Original galvanized trunk and branch from the 1950s and 60s leaks at every transverse joint and at the plenum takeoffs. Gray and black flex from the 1970s through the 90s has inner liners gone brittle in attic heat. Brittle liner cannot be sealed. It gets replaced. Newer R-6 and R-8 flex usually just needs mastic and a proper band clamp at the collar.
Panned joist returns in older houses are a separate problem. They pull attic air through unsealed framing cavities, so you breathe insulation fiber and rodent droppings. Undersized filter slots with 1-inch filters bypass at the edges too.
Mastic and mesh tape, not cloth duct tape. Cloth tape dries out and falls off in attic heat. We also seal the filter slot and plenum seams, since those leaks sit closest to the blower and cost the most airflow.
Same-day duct sealing available in San Jose, CA.
Call (408) 833-6715Other air duct cleaning services
- Air Filter Replacement: We swap out your dirty filter with the right size and rating for your system, so airflow improves and dust stops circulating through your San Jose home.
- Coil Cleaning: We clean the evaporator and condenser coils in your San Jose home's system when airflow drops or cooling costs climb, usually in a single visit.
- HVAC Duct Cleaning: We clean the ducts and vents throughout your San Jose home, clearing out the dust and debris that keep circulating every time your system runs.
- Air Vent Cleaning: We clean the vents and registers throughout your San Jose home, clearing out the dust and debris that keep ending up back in your rooms.
What Happens After You Call Us
Call and tell us your vent count and whether ducts run through the attic. We give a two hour arrival window, a text when the truck is twenty minutes out, and a free estimate.
We walk the house, pull a register cover, and check the trunk line before quoting. Vent count, attic run length, and torn flex duct set the price, and you get it in writing first.
We brush and vacuum every run, seal registers back down, test airflow at the farthest vent, and swap your filter on request. Drop cloths come up, the attic hatch gets wiped, and you pay the quoted number.
Need duct sealing today?
Available today in San Jose, CA. We give you the price before any work starts.
Call (408) 833-6715