Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Before
After
Before
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Before
AfterAir Duct Cleaning Company in Cotati, CA
Air duct cleaning in Cotati, CA typically runs $350 – $650 for a whole-home system, with most jobs completed in a single morning. What drives the price isn’t just square footage; it’s whether we’re working through a 1920s crawlspace with original galvanized metal ducts or pulling flexible plastic runs from a 1990s Rancho Cotate tract home. Hollis Air Duct Cleaning dispatches crews from our San Francisco Bay Area office, and we’ve learned that Cotati’s tight 2.5-square-mile footprint packs two completely different housing eras into every service route. Call us at (361) 326-5060 for a free written estimate before any work starts.
Why Cotati Homes Are Different
Cotati sits in the Sonoma coastal fog belt, where cool, damp mornings burn off into hot dry afternoons. That daily dew-and-dry cycle forces fine particulate and pollen through every mastic joint and return grille in ways you don’t see inland. The city’s heavy seasonal cypress and eucalyptus pollen load adds a fine organic dust that clogs systems differently than the urban particulate in Rohnert Park or Petaluma.
The housing stock splits sharply. Around the old downtown hexagon, pre-WWII cottages on gridded streets have accessible crawlspaces and original metal ductwork, often octopus layouts that haven’t been touched in decades. Out along the 101 corridor, Rancho Cotate and the west-side subdivisions hold 1980s – 2000s tract homes built with cheap flex duct runs that sag, tear, and collect debris at the low points. Our technicians have learned to schedule Rancho Cotate’s flex-duct systems on the hottest weekday mornings in August, when the heat keeps the plastic pliable enough to pull without tearing. Downtown’s old metal ducts get handled early, before afternoon fog makes those crawlspaces too wet to work in. Two duct types, often on the same street, each needing a different approach.
Our Main Cotati Services
Most Cotati homeowners call us for one of three jobs. Each has its own page with full pricing and details.
Air Duct Cleaning in Cotati
We clean both the supply and return runs, starting with a Rotobrush rotary brush system that scrubs the duct walls while a vacuum pulls the debris out. In Cotati’s older homes, we’re often clearing decades of compacted pollen and fine dust from galvanized steel that was never sealed properly. In the newer tracts, we’re pulling construction debris and sag-point clogs from flex duct that was installed fast and cheap. Every job gets a written price before we touch anything. Air Duct Cleaning in Cotati has the full breakdown.
Dryer Vent Cleaning in Cotati
Cotati’s damp morning fog and the lint load from heavy eucalyptus pollen create a sticky, dense buildup in dryer vents that pure heat alone won’t clear. We use a combination rotary brush and high-velocity air whip to break it loose, then verify airflow with a manometer. The 365-Day Done Right Promise covers this too; if your dry times creep back up within a year, we return at no charge. Dryer Vent Cleaning in Cotati has pricing and scheduling details.
Duct Sealing in Cotati
Sealing is where Cotati’s climate really shows. Those daily expansion and contraction cycles from fog to heat open gaps at joints and plenum connections that mastic alone won’t hold. We apply duct sealing mastic with embedded fabric reinforcement at every joint, then pressure-test the system to verify the seal holds. Older metal systems see the biggest gains; flex duct often needs replacement of damaged sections first. Duct Sealing in Cotati explains when sealing makes sense versus when replacement is the honest call.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Cotati
We stock parts and filtration products from Aprilaire, Abatement Technologies, and Guardsman, and we carry Rotobrush rotary brush heads and Nikro negative-air machine hoses in our Cotati-area vans. Most filter replacements and component swaps happen same visit. See our brands for the full equipment roster.
Pricing for Air Duct Cleaning Company in Cotati, CA
| Service | Typical range in Cotati |
|---|---|
| Whole-home air duct cleaning (single system) | $350 – $650 |
| Whole-home air duct cleaning (two systems) | $550 – $950 |
| Dryer vent cleaning (ground-floor, single run) | $120 – $180 |
| Dryer vent cleaning (second-story or rooftop termination) | $180 – $260 |
| Duct sealing (whole system, accessible crawlspace) | $800 – $1,400 |
| Duct sealing (partial, problem zones only) | $350 – $600 |
| Flex duct section replacement (per run) | $180 – $320 |
| Return grille and register deep cleaning | $75 – $125 |
| HEPA filtration upgrade (Aprilaire or Guardsman) | $280 – $450 |
| System sanitizing treatment (post-cleaning) | $95 – $150 |
What pushes Cotati prices toward the high end: multiple flex-duct runs with sag or tear damage, crawlspaces with standing moisture from fog-season seepage, and older metal systems with rusted joints that need repair before sealing. What we don’t do: quote a low per-vent teaser and rewrite the invoice at your door. The price is written down before any work starts, and it does not move.
Neighborhoods We Serve in Cotati
Our crews cover all of Cotati’s compact service area in a single dispatch day. These are the neighborhoods we work most often:
- Downtown Cotati (historic hexagon, pre-WWII cottages)
- Rancho Cotate (1980s – 2000s tract homes, flex-duct systems)
- Westside subdivisions (mixed-era builds near the 101)
- Old Redwood Highway corridor (transitional housing stock)
- Cotati Avenue commercial-residential mix
Most Cotati appointments book within a three-day window; the city’s small footprint means we’re rarely more than fifteen minutes from the next job.
Service Area – Cities Near Cotati
We schedule Cotati alongside our regular Sonoma County routes. Homeowners in Rohnert Park, CA often share the same pollen and fog conditions, while Petaluma, CA sits just south with similar coastal influence. We also run north to Santa Rosa, CA and west to Sebastopol, CA for full-system jobs that need the full Rotobrush and Nikro rig setup.
Serving Cotati, CA - Our Local Coverage Area
We’re based in the Cotati area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning Company in Cotati
No permit is required for standard cleaning or sealing in Cotati; only full duct replacement triggers building department review. If we find your system needs replacement rather than cleaning, we’ll flag it in writing before any permit conversation starts. Call (361) 326-5060 if you want us to check your setup.
Most Cotati appointments schedule within three business days, and our Bay Area dispatch keeps crews rotating through Sonoma County daily. We don’t promise same-day, but we do promise to show up inside the window we give you, uniformed and background-checked, with the price already written down.
Yes, we work with Rancho Cotate and downtown HOA properties regularly. We carry proof of insurance and can provide a certificate of insurance naming your HOA if required. The 365-Day Done Right Promise applies the same whether you own a cottage on the hexagon or a unit off East Cotati Avenue. Call (361) 326-5060 and we’ll coordinate access with your property manager.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Cotati Customers Say
"Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O."Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W."Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q.