Air Duct Replacement in San Jose, CA

When does replacing ducts beat cleaning or patching them?

Ask what the liner is made of. Flex duct in San Jose attics gets thermally cycled every cooling season. The inner liner pulls loose at the collar. The outer jacket stays inflated. The run looks fine from the hatch. Cleaning a torn liner accomplishes nothing. Same answer for rodent or bird nesting: contaminated insulation is replaced, not vacuumed.

Galvanized trunks from the 1950s–70s tract stock often survive. The sheet metal is usually sound. What fails is the joint sealing and the boots dropping into ceilings. On older wrapped duct, insulation and tape should be tested before anyone disturbs it. That matters on pre-war and early postwar homes here, and it changes how the work is staged.

Panned joist returns are the other honest reason to replace. A framing cavity lined with sheet metal cannot be sealed properly. Neither can one undersized hallway return grille carry the filtration load for a whole house. Replacement is the chance to run actual return duct and add a second return.

California requires duct leakage testing by a third-party HERS rater on most duct replacement, under permit. Budget time for that, not just install days.

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 replacement available in San Jose, CA.

Call (408) 660-8217

Other 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.