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.
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Before
AfterAir Duct Cleaning Company in San Anselmo, CA
Air duct cleaning in San Anselmo runs $450 – $850 for a typical single-family home, with most jobs scheduled within a few business days. The real challenge here isn’t finding someone with a truck-mounted vacuum; it’s finding a crew that understands how Ross Valley moisture, pre-1960s duct layouts, and heavy tree canopy change what “clean” actually means. We dispatch from our San Francisco Bay Area office and serve San Anselmo with background-checked, uniformed technicians who price every job in writing before touching equipment. Call us at (361) 326-5060 for a free estimate.
Why San Anselmo Homes Are Different
San Anselmo sits in the Ross Valley floor, and that geography shapes every duct system we open. Winter flooding from Corte Madera Creek and Sleepy Hollow Creek pushes a recurring cleanup cycle: homeowners whose crawlspaces took water end up with mold spores and creek silt pulled straight into return ducts. We’ve found this pattern repeatedly in the flats near Memorial Park and the lower stretches of San Anselmo Avenue after heavy storms.
The housing stock compounds the problem. Most San Anselmo homes were built between the 1920s and 1950s, bungalows and ranch-style houses with original or lightly retrofitted forced-air systems. Flexible duct runs snake through unconditioned crawlspaces and attics that stay damp for weeks thanks to valley fog drip and 40-plus inches of winter rain. That moisture feeds microbial growth on duct interiors and rust on metal fittings. Summer brings the opposite stress: wildfire smoke from Marin and Sonoma hills, plus oak, redwood, and eucalyptus pollen that clogs outdoor intake grilles in neighborhoods like Sleepy Hollow where the canopy is thickest.
Our Main San Anselmo Services
San Anselmo homeowners call us for three core jobs, each shaped by the valley’s specific conditions.
Air Duct Cleaning in San Anselmo
We clean supply and return ductwork using Rotobrush rotary brush systems and Nikro negative-air machines, the same equipment commercial crews run. In San Anselmo, that means agitating out creek silt that settled in low-lying return lines, then extracting it under contained negative pressure so nothing drifts into living spaces. Homes near downtown with original galvanized ducts need gentler brush selection than hillside contemporaries with flex runs. Every job gets a written price before we start and before-and-after photos of your own ducts. Air Duct Cleaning in San Anselmo
Dryer Vent Cleaning in San Anselmo
Dryer vent blockages in San Anselmo aren’t just lint. The dense tree canopy means leaf debris, pollen, and even small twigs collect in exterior terminations, especially on hillside homes in Sleepy Hollow where prevailing winds stack material against wall caps. We run rotary brushes through the full vent line and measure airflow before and after. A restricted dryer vent in a damp crawlspace also traps moisture against ductwork, accelerating corrosion. Dryer Vent Cleaning in San Anselmo
Duct Sealing in San Anselmo
Older San Anselmo homes with flex duct in crawlspaces often leak 20 – 30 percent of conditioned air through gaps at joints and seams. We seal with mastic and mechanical fasteners, not tape that fails in damp conditions. In valley homes, sealing also reduces the suction that pulls crawlspace moisture, mold spores, and rodent droppings into the airstream. We test leakage before and after with a duct blaster so you see the change in writing. Duct Sealing in San Anselmo
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 San Anselmo
We stock parts and filters for Honeywell, Aprilaire, and Abatement Technologies systems common in Marin County retrofits. Most replacements ship to our Bay Area office within 24 – 48 hours; if we don’t have it on the van, we’ll tell you exactly when it arrives before we leave your home. See our brands for the full roster.
Pricing for Air Duct Cleaning Company in San Anselmo, CA
| Service | Typical range in San Anselmo |
|---|---|
| Whole-home air duct cleaning (single system, up to 12 vents) | $450 – $650 |
| Whole-home air duct cleaning (larger home, 13 – 20 vents) | $650 – $850 |
| Dryer vent cleaning (standard through-wall run) | $150 – $250 |
| Dryer vent cleaning (long or rooftop run) | $250 – $350 |
| Duct sealing (Aeroseal or mastic, single system) | $1,200 – $2,400 |
| Return duct repair/replacement (crawlspace access) | $400 – $800 |
| Sanitizing/mold inhibitor application (after cleaning) | $150 – $300 |
| HVAC filter upgrade (Honeywell or Aprilaire media) | $85 – $200 installed |
Prices in San Anselmo run toward the higher end when crawlspaces are flooded or tight, requiring extra setup for extraction equipment, or when original ductwork needs repair before cleaning can proceed safely. The price we write down is the price you pay. No per-vent add-ons, no equipment charges that appear at the door.
Neighborhoods We Serve in San Anselmo
We work across the full town, from the flats to the hills. Most San Anselmo appointments are scheduled within two to four business days, with dispatch coordinated from our Bay Area office.
- Sleepy Hollow
- Memorial Park area
- San Anselmo Avenue corridor
- Sir Francis Drake Boulevard flats
- Red Hill and hillside zones
Service Area – Cities Near San Anselmo
Our crews cover the central and southern Marin County corridor. We regularly work in Fairfax, CA just up the Ross Valley, Kentfield, CA toward the eastern ridge, San Rafael, CA to the south, and Larkspur, CA along the highway corridor. Scheduling is handled from our Bay Area office with routes built to minimize drive time between jobs.
Serving San Anselmo, CA - Our Local Coverage Area
We’re based in the San Anselmo 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 San Anselmo
No permit is required for routine cleaning or dryer vent maintenance. Duct sealing and any duct replacement that alters the original layout may need a Marin County building permit; we handle the paperwork and inspection scheduling if your job crosses that line. Call (361) 326-5060 and we’ll tell you exactly what your specific scope requires.
We prioritize San Anselmo calls involving post-flood duct contamination, typically scheduling within 24 – 48 hours because mold spores propagate quickly in damp flex duct. We do not promise same-day dispatch for standard cleanings, but emergency contamination jobs move to the front of the route.
Yes. Our van-mounted Nikro negative-air units and Rotobrush portable systems fit most hillside access conditions. If your driveway or crawlspace opening is unusually restricted, we’ll ask for a photo or brief video call before the appointment so we bring the right equipment configuration.
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 San Anselmo Customers Say
"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."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H.