Air Duct Cleaning in Milpitas, CA

It depends on what the metal around it looks like. On the 1960s–80s tract homes out on the flats, the supply plenum and trunk are site-built sheet metal, and the access door is often just a panel someone cut, screwed back on, and sealed with duct tape that has since dried out. If the frame is straight and the surrounding metal is solid, we can re-gasket it and refasten it so it actually seals. If the edges are chewed up from repeated openings, the screw holes are stripped, or the panel has been cut oversize, replacing it with a proper hinged or gasketed access door is the better call, and it makes future cleanings easier. On newer townhomes and condos near the transit corridor, the air handler is usually in a closet with a factory panel, and that almost always just needs new gasket material rather than replacement.

A few things come up repeatedly. Early flex duct in attics from the original tract construction: the inner liner sags, the outer jacket cracks, and runs get crushed where someone stored boxes or walked across them. Rodent activity, which gets worse the closer you are to the foothill edge, in crawlspaces and attics alike. We find droppings on top of duct runs and sometimes nesting inside a boot or a disconnected flex line, and that becomes an odor problem through the registers. There's also dust loading. The afternoon wind through the bay gap pushes fine dust across the flats, and the landfill and industrial corridor plus I-880 add their own particulate, so return sides and filter cabinets here load up faster than you'd expect.