Air Duct Cleaning in Gilroy, CA

Frequently Asked Questions

My filter looks gray a few weeks after I change it — is that normal in Gilroy?

It's normal here, and it's the most common thing we hear in this part of the valley. You're surrounded by working farmland, and during tilling and harvest the dry-season field dust drifts straight into town. Add Highway 101 traffic particulate and you have a load most mid-Peninsula homes never see. A filter going gray fast isn't a sign your system is broken, but it does mean the dust that gets past the filter is settling in the return plenum and the supply runs. If you're changing filters on a short cycle and still seeing dust on registers, that's the point where cleaning the ductwork itself makes a difference instead of chasing filters.

How often should ducts actually be cleaned on a house out here?

Shorter intervals than a north-county home, generally. The combination of agricultural dust drift, burn season haze, and a May-through-October cooling season means your blower runs hard for months while pulling that air through. Homes closer to open fields or with a lot of road exposure load up faster than homes tucked into the middle of a subdivision. Rather than give you a fixed number, we'd rather look at what comes out of your returns. The state of the plenum and the first few feet of flex duct tells us more than a calendar does.

What usually goes wrong with the ductwork in the 1990s–2000s stucco homes here?

Attic flex duct is the main issue. Those subdivisions were built with flexible duct run through the attic, and after twenty-plus years of Gilroy summer attic heat the outer jacket gets brittle, support straps sag, and runs develop low spots where dust settles and stays. We also see loose or pulled connections at boots and at the plenum, which lets hot, dusty attic air get drawn into the system directly. Since most of these homes are single-zone, one bad run at the far end of the house shows up as a bedroom that never cools in August. We note that kind of thing when we're in the attic and tell you what we found.

What does duct cleaning cost for a Gilroy home?

No prices here, but we can tell you what moves the number in this town. Count of supply runs is the biggest factor, and the larger stucco subdivision homes tend to have more of them than older downtown houses. Attic access matters too. A tight scuttle and a long crawl over joists in summer attic heat is slower work than an open, walkable attic. How heavily loaded the system is plays in as well; a return plenum caked from years of field dust takes real time to clean properly. Older downtown homes sometimes have retrofitted or mixed-era ductwork, which can add time. We walk the house and tell you where it lands before anything gets touched.