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 Larkspur, CA
Hollis Air Duct Cleaning handles duct cleaning and sealing in Larkspur’s two distinct housing environments: the historic bungalows and Victorians downtown, and the mid-century hillside homes of Madrone Canyon and Palm Hill. The coastal damp here creates a different set of problems than inland markets – rust flakes in galvanized ductwork, pollen infiltration from oak woodlands, and moisture-driven mold rather than dust from heavy heating cycles. We dispatch crews from our San Francisco Bay Area office and serve Larkspur with the same written pricing and 365-Day Done Right Promise we apply to every job. Call (361) 326-5060 for a free estimate.
Why Larkspur Homes Are Different
Larkspur’s geography splits the town into two duct ecosystems that demand different approaches. Downtown, the late-1800s to 1920s bungalows and Victorians often carry retrofitted heating systems with ductwork cobbled into tight crawl spaces and walls never designed for it. Hillside neighborhoods like Madrone Canyon and Palm Hill hold post-war ranch homes with original galvanized steel ducts that rust from the inside out in Marin’s fog belt.
The mild coastal climate means ducts here rarely face the thermal stress of inland valleys. The real enemy is moisture. Winter damp sits in idle ductwork for months, and when the first cold snap hits, heating systems blow a visible puff of rust flakes into living rooms – something we see regularly in Madrone Canyon callouts. Spring pollen from surrounding oak woodlands gets drawn into return vents and embeds in damp duct walls, so Larkspur cleanings often target allergen loading and microbial growth rather than simple dust accumulation.
Our Main Larkspur Services
Most Larkspur homeowners call us for one of three jobs, each handled on its own dedicated page with local pricing and conditions.
Air Duct Cleaning in Larkspur
Our Air Duct Cleaning in Larkspur service uses Rotobrush rotary brush systems and Nikro negative-air machines to remove the rust flakes, pollen residue, and mold spores that accumulate in coastal ductwork. For downtown Victorians with retrofitted systems, we access tight crawl spaces and older plenums without damaging original structure. Hillside homes get particular attention to galvanized duct corrosion and leak points where fog-driven moisture enters.
Dryer Vent Cleaning in Larkspur
Our Dryer Vent Cleaning in Larkspur service addresses the extended vent runs common in hillside homes, where dryers sit on lower levels and exhaust through long vertical or horizontal lines. The coastal humidity here causes lint to clump and adhere to vent walls more aggressively than in dry climates, increasing fire risk and drying times. We clear the full run and verify airflow with a meter before leaving.
Duct Sealing in Larkspur
Our Duct Sealing in Larkspur service targets the leak points that draw in Marin’s damp outside air. Original galvanized ducts in Madrone Canyon and Palm Hill homes have separated seams and rusted joints that bypass conditioned air into crawl spaces and wall cavities. We apply duct sealing mastic and mechanical fasteners to restore system pressure and stop the moisture intrusion that drives mold growth.
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 Larkspur
We stock parts and filtration products from Honeywell, Aprilaire, and Abatement Technologies for Larkspur systems, with same-day availability on most common components. See our brands for the full equipment roster.
Pricing for Air Duct Cleaning Company in Larkspur, CA
| Service | Typical range in Larkspur |
|---|---|
| Whole-home air duct cleaning (single system) | $450 – $750 |
| Whole-home air duct cleaning (dual HVAC system) | $700 – $1,100 |
| Dryer vent cleaning (standard run, single story) | $120 – $180 |
| Dryer vent cleaning (extended run or multi-story) | $180 – $280 |
| Duct sealing (partial, targeted leaks) | $350 – $550 |
| Duct sealing (whole-home, single system) | $650 – $950 |
| HVAC mold remediation add-on | $200 – $400 |
| Return vent deep cleaning (per vent, if needed separately) | $45 – $75 |
Prices move higher in Larkspur when crawl-space access is restricted downtown or when hillside homes require ladder work for exterior vent access. We write the full price before touching anything, and that number does not change at the door.
Neighborhoods We Serve in Larkspur
We cover all of Larkspur with crews dispatched from our Bay Area office. Most appointments are scheduled within a few days, with routing that groups hillside jobs and downtown jobs for efficient coverage.
- Downtown Larkspur (historic core, bungalows and Victorians)
- Madrone Canyon (mid-century hillside, original galvanized ducts)
- Palm Hill (post-war ranch homes, extended vent runs)
- Escalle (residential fringe, mixed-age housing)
- Larkspur Landing (newer construction, modern flex duct)
Service Area – Cities Near Larkspur
Our crews regularly route through central Marin County, with Kentfield, CA and Corte Madera, CA immediately adjacent to Larkspur, San Rafael, CA to the north, and Mill Valley, CA to the south. Scheduling is coordinated from our San Francisco Bay Area office to minimize drive time and keep appointments inside quoted windows.
Serving Larkspur, CA - Our Local Coverage Area
We’re based in the Larkspur 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 Larkspur
No permit is required for standard duct cleaning or dryer vent cleaning in Larkspur. Duct sealing that involves modifying or replacing duct sections may trigger a minor permit if the work alters the HVAC system’s capacity or routing; we flag this during the estimate and handle the paperwork if needed. Call (361) 326-5060 to discuss your specific setup.
Most Larkspur appointments are available within three to five business days, with some flexibility for routing alongside nearby Corte Madera, CA or Kentfield, CA jobs. We do not promise same-day dispatch, but we do promise to arrive inside the window we quote. Call (361) 326-5060 for current availability.
Yes. Our technicians carry ladder equipment rated for hillside access and are trained on The Garrison Standard protocols for working on sloped properties safely. We assess access during the estimate call and bring appropriate gear, so the job proceeds without delay once we arrive. Call (361) 326-5060 to arrange a walkthrough.
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 Larkspur 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.