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
After
Before
AfterAir Duct Cleaning Company in Mill Valley, CA
Air duct cleaning in Mill Valley runs $420 to $720 for a typical 2,000-square-foot home, with older hillside builds on crawl-space foundations often landing at the higher end. Our crews work differently here than they do in drier Marin towns because Mill Valley’s redwood-canyon moisture changes what’s actually inside your ducts. Call (980) 447-2498 and we’ll give you a written price before any work starts.
Why Mill Valley Homes Are Different
Mill Valley sits in a fog-collecting canyon at the base of Mount Tamalpais, where marine moisture from the Pacific lingers hours longer than in surrounding towns. What that means for your ducts is straightforward: interiors stay damp, and biological growth – mold, mildew, the stuff you’ll smell when the heat kicks on – forms far more readily than simple dust accumulation. The marine layer here regularly produces some of the highest sustained humidity in Marin County, with fog persisting into midday even during summer months.
The housing stock makes it worse. Mill Valley runs heavily toward 1920s-to-1940s craftsman cottages and hillside builds on sloped lots with crawl-space foundations. In these homes, flex ductwork often runs through damp, under-ventilated subfloor zones, and retrofitted heating systems commonly left behind poorly sealed duct joints that continuously draw humid exterior air from below the floor. Temperatures stay mild, so HVAC systems run infrequently, which means ducts never really dry out between cycles. In the redwood-shaded streets near Cascade Canyon, we routinely open registers to find visible mold on the inner duct liner. No plumbing leak, no flood. Just fog-season air pulled through unsealed returns, week after week.
There’s also the wildland-urban interface factor. Mill Valley is deep in fire country, and post-wildfire smoke infiltration into ductwork is a recurring need here that flat, drier neighbors face at far lower intensity. Smoke particles don’t simply vanish when the sky clears; they settle into duct interiors and recirculate for months.
Our Main Mill Valley Services
The two calls we take most from Mill Valley homeowners are full duct cleanings prompted by visible mold or post-wildfire smoke, and dryer vent cleanings in older homes where vent runs were never updated. Here’s what each involves here.
Air Duct Cleaning in Mill Valley
We run professional-grade negative-pressure extraction equipment from Rotobrush and Nikro to pull accumulated biological growth, smoke residue, and years of canyon dust out of your supply and return runs. In Mill Valley homes on crawl-space foundations, the real work is often in the subfloor section of the duct system, where humid air has been infiltrating through failed joints. We treat that as a system problem, not just a register-cleaning job. Full details on what we find and how we fix it are on our Air Duct Cleaning in Mill Valley page.
Dryer Vent Cleaning in Mill Valley
Dryer vents in Mill Valley run long and sometimes kinked through older construction, and the humid ambient air means lint holds moisture and clings rather than drying and blowing clear. We disassemble, brush, and negative-pressure extract the full run from dryer to exterior termination, checking for the damaged flex connections that show up often in these older homes. Our technician’s name and photo come to you before the visit. The full process is spelled out on our Dryer Vent Cleaning in Mill Valley page.
Air Duct Repair in Mill Valley
When a Mill Valley home’s ducts are torn, disconnected, or pulling in subfloor air, cleaning alone won’t help. We seal joints, replace damaged flex sections, and rebuild connections so the system moves conditioned air without dragging crawl-space humidity along with it. Every repair is covered by a written guarantee, and if a covered repair fails within 365 days, we return at no charge. See exactly what we repair on our Air Duct Repair in Mill Valley page.
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 Mill Valley
We work with ducting and air-quality components from Nikro, Honeywell, Aprilaire, and Abatement Technologies. Parts and filtration upgrades for these systems are stocked in our Bay Area supply chain, so most Mill Valley jobs complete without waiting on a second appointment. See our brands for the full list.
Pricing for Air Duct Cleaning Company in Mill Valley, CA
| Service | Typical range in Mill Valley |
|---|---|
| Air duct cleaning (single system, up to 10 vents) | $390 – $520 |
| Air duct cleaning (larger home, 11 – 20 vents) | $550 – $720 |
| Crawl-space duct cleaning add-on | $110 – $180 |
| Mold treatment for duct interiors (heavy colonization) | $120 – $240 |
| Dryer vent cleaning (standard roof or wall termination) | $120 – $180 |
| Dryer vent cleaning (20+ foot run or crawl-space exit) | $160 – $220 |
| Dryer vent lint trap bypass replacement | $60 – $95 |
| Duct joint sealing (per access point) | $40 – $70 |
| Flex duct replacement (per 10-foot section) | $90 – $145 |
| Register replacement (ceiling or floor, standard 4×10) | $35 – $55 |
Two things tend to push Mill Valley pricing upward: crawl-space access that requires working in confined subfloor zones, and heavy mold or smoke contamination that means more extraction time and possible liner treatment. Whatever the final number, it’s put in writing before any work begins. No surprise invoices at the end.
Neighborhoods We Serve in Mill Valley
Our crews work throughout Mill Valley on a scheduled basis, so we group jobs by area to keep dispatch efficient. Call us and we’ll give you a firm window based on where you are and what we’re doing nearby that week.
- Cascade Canyon
- Sycamore Park
- Tam Valley
- Blithedale Canyon
- Strawberry
Service Area – Cities Near Mill Valley
We serve homeowners across the southern Marin corridor. If you’re across Richardson Bay in Sausalito, CA or up the 101 in Corte Madera, CA, the same pricing and written-guarantee terms apply. We also cover Larkspur, CA and Kentfield, CA with regularly scheduled routes. Scheduling and dispatch are coordinated from our San Francisco Bay Area office, but the crew at your door is assigned from the local Mill Valley schedule.
Serving Mill Valley, CA - Our Local Coverage Area
We’re based in the Mill Valley 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 Mill Valley
We schedule Mill Valley jobs by neighborhood rotation, typically within a few days of your call. When wildfire smoke has recently blown through, we prioritize affected areas. Call (980) 447-2498 and we’ll give you a firm day and window before you commit.
No permit is required for duct cleaning or dryer vent cleaning, and the work is interior to your unit so HOA review doesn’t apply. If a repair requires replacing exposed exterior vent caps or terminations on a hillside home, we’ll tell you before starting and you can check with your HOA if needed.
Yes. Our trucks carry equipment sized for narrow roads and tight parking, and our crews are used to working on sloped lots with crawl-space entries. There’s no area inside Mill Valley we don’t service, from downtown flats to the steepest Tamalpais-adjacent streets.
If you want an honest look at what’s inside your ducts and a price you’ll see in writing before anyone touches your home, call (980) 447-2498. Marcus Veale and the Linden team serve Mill Valley with the Threshold Standard on every job: background-checked, photo-badged technicians whose name and photo arrive before they do.
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 Mill Valley Customers Say
"We had construction dust packed into every register after a remodel. They sealed off the returns, used negative pressure, and left the floors cleaner than they found them."
- Paul E."I liked that I knew who was coming in. Name and photo texted ahead, badge at the door. He was quiet, careful with the furniture, and thorough."
- Cheryl A."Thorough job on all eleven vents and the main trunk. Took longer than the three hours they quoted, but he told me early and kept working. Air feels fresher."
- Meredith L.