Air Duct Repair in San Jose, CA
Call (408) 660-8217One room never cools and the attic feels like it does
That is usually a duct failure, not a bad thermostat. Flex duct pulls loose at the collar. The boot drops off the register box. Conditioned air then feeds the attic. In 1950s–70s San Jose tract homes, the trunk is rigid galvanized sheet metal with branch takeoffs. Later remodels spliced insulated flex onto that metal. The splice is where things separate.
Repair starts with finding the break, not guessing. We pull registers and look up the boot. Then we follow runs through the attic. Thermal cycling over a long cooling season loosens flex liner at the collars. Mastic and a proper inner-liner band hold. Foil tape alone on dusty metal does not. Unsealed plenum seams are a separate issue. They pull attic insulation fibers and dust straight into the supply air.
Crawlspace runs in pre-war and hillside homes fail differently. Soil moisture soaks the jacket. Rodents chew entry holes and nest inside. Damaged sections there get replaced, not patched.
Most tract homes have one hallway return doing all the filtration. If that return is leaking or undersized, sealing supplies only shifts the problem. We check static pressure and return sizing before calling a repair finished. Spring pollen and late-summer smoke residue make a leaky return obvious fast.
Serving San Jose, CA and Surrounding Areas
Also serving: Palo Alto, Gilroy, Stanford, Los Altos Hills, East Foothills, Atherton, San Martin, Fremont, Santa Clara, Milpitas
Same-day air duct repair available in San Jose, CA.
Call (408) 660-8217Other air duct cleaning services
- Air Filter Replacement: We'll swap out the dirty filter in your San Jose home, check the fit, and show you when to change it next.
- Duct Sealing: If your San Jose home has rooms that never cool down or dusty vents, we'll find the leaks in your ductwork and seal them.
- Coil Cleaning: We clean the coils in your San Jose system when airflow drops or cooling costs climb, so your unit stops working harder than it needs to.
- HVAC Duct Cleaning: We clean the ductwork throughout your San Jose home to clear out built-up dust and debris, so call us if your vents smell musty or your allergies flare up indoors.