Home air handler unit that moves heated and cooled air through the ductwork

Same-day air duct service in San Anselmo, CA

Air Duct Servicesin San Anselmo, CA

In San Anselmo, what ends up inside your ductwork depends on where in California you live - wildfire smoke one season, valley dust the next, coastal damp after that. We clean the system from the main trunk out, inspect it on camera and seal the leaks that waste conditioned air.

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Air Duct Service Co — San Anselmo, CA

Every air duct service, one San Anselmo call

From an older home with original ductwork to a sealed inland house that ran through smoke season, these are the six duct services San Anselmo homeowners book with us. Below is air duct in San Anselmo, CA in full — every service, the local conditions and the areas covered.

Technician feeding an air whip into a floor vent in a home living room

Cleaning & Care Air Duct Cleaning

Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each run is scrubbed individually, so years of dust and debris travel one way only — out of the ducts and into the machine. Around San Anselmo, a cleaning after smoke season clears what the returns collected while the skies were gray. The crews behind air duct cleaning in San Anselmo, CA are the same ones who cover the ZIP codes listed below.

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Technician inspecting a ceiling return vent with a flashlight inside a home

Cleaning & Care Air Duct Inspection

In Marin County, an inspection after smoke season shows how much residue the system stored. A camera goes inside your ductwork so you can see exactly what's in there — buildup, damage or blockages — before we recommend anything. Inspections are free. For air duct inspection in San Anselmo, CA, one call books the visit and a local tech takes it from there.

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Technician joining a duct section back together in a home attic

Repair Air Duct Repair

Crushed, torn or disconnected ducts leak the air you pay to heat and cool. Around San Anselmo, we repair original metal systems and modern flex retrofits alike. We repair and rebuild damaged sections so airflow is strong and even again. That local standard is what air duct repair in San Anselmo, CA means with Air Duct Service Co.

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Technician connecting a new flex duct to the furnace inside a home

Install & Replace Air Duct Installation

New duct runs for additions, remodels and system upgrades — sized, sealed and balanced so every room gets its share of heating and cooling. In San Anselmo, ADUs and garage conversions get ductwork sized for the space, not tied in as an afterthought. That is air duct installation in San Anselmo, CA, done the way it should be.

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Technician brushing mastic sealant onto a duct joint in a home attic

Repair Air Duct Sealing

Leaky joints quietly waste a big share of your airflow. We seal seams and connections with professional mastic for a tighter, more efficient system. Around San Anselmo, we replace heat-dried tape with professional mastic at seams, boots and plenum connections. That local standard is what air duct sealing in San Anselmo, CA means with Air Duct Service Co.

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Two technicians cleaning the ductwork in a home with a professional duct machine

Cleaning & Care Commercial Air Duct Cleaning

Offices, restaurants, retail and multi-unit buildings across San Anselmo — scheduled commercial duct cleaning with the same negative-air machine sealed onto the trunk, keeping your space comfortable, compliant and breathing clean. Offices across California often book after fire season, clearing the stored residue before staff complaints start. That is commercial air duct cleaning in San Anselmo, CA, done the way it should be.

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Need something else — a damper, a blower, a smoke problem, a bird in the flue? We cover all 27 air duct specialties. Call (888) 258-5005 and describe it.

Local conditions

San Anselmo ducts have San Anselmo problems

A duct system in San Anselmo may face wildfire smoke, valley heat, coastal moisture or all three across the year. This is what we actually find here, and what we check on every visit.

Coastal damp in the ductwork

Closer to the coast, the pattern flips: mild temperatures, marine-layer moisture and systems that sit idle for stretches. Dust inside those ducts sits in damp air, musty startup smells are common, and returns near the floor collect a heavier, damper load.

Open-window seasons load the system

California's mild months are open-window months, and everything outside - pollen, road dust, construction grit - comes in and a share of it settles into the returns. By the time the house closes up for summer heat or winter rain, the system has stored a season of it.

Pollen nearly all year

With something blooming in California in almost every month, pollen is not a season here so much as a rotation - trees, grasses, weeds in turn. Return ducts collect each wave, and allergy households feel the stored load most when the house is sealed tight.

ADUs, conversions and additions

Garage conversions and accessory units are going up across San Anselmo, and their ductwork is often the last thing planned - tied into a trunk that was never sized for another room. Those spaces stay uncomfortable until the run is installed, sealed and balanced properly.

San Anselmo sits in Marin County, and the ZIP list at the bottom of this page covers 2 serviceable ZIP codes — 94901 through 94960. The closest served neighbors are San Rafael, Larkspur, Fairfax, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-5005.

Cold air duct? Warm answer.

Same-day service, free estimates, licensed & insured — and a air duct that lights when you click the remote.

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Questions

Asked the way San Anselmo asks

The smoke is gone but my house still smells like it - why?

Because the ductwork kept it. Fine smoke particles settled into the dust inside your trunk and returns during the event, and every cycle since has released a little back into the rooms. In San Anselmo, a cleaning from the main trunk out removes that stored residue, and the startup smell goes with it.

How often should ducts be cleaned in California?

Every few years for most San Anselmo homes - sooner after a heavy smoke season, a remodel, or in allergy households. Coastal and inland systems age differently, so we camera-inspect free and show you your own trunk; the right interval comes from what is actually in there.

How do you clean the ducts - what is the process?

Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each individual run is scrubbed on its own, so loosened dust and smoke residue travel toward the trunk and into the machine - never back into your rooms. We finish at the registers and show you the before-and-after on camera.

Can cleaning help after wildfire smoke exposure?

It removes the indoor reservoir: smoke that settled into duct dust keeps recirculating long after outdoor air clears. Cleaning the trunk and returns, plus a fresh high-quality filter, is the combination Marin County homeowners use to close out a smoke season indoors.

What are the signs my ducts are leaking?

Rooms that lag the thermostat, long AC cycles on ordinary days, dust returning soon after cleaning and weak airflow at distant registers. In attic systems across San Anselmo, heat-dried tape and shifted joints are the standing culprits, and mastic sealing is the lasting fix.

Do you give prices over the phone?

No — and be wary of anyone who does. Every duct system is a different size and condition, so a phone price is a guess that changes at your door. Our inspections and estimates are free: a tech looks inside your actual ductwork first, then gives you one clear price before any work starts.

Where we work

San Anselmo, CA ZIP codes we serve

Air Duct Service Co is a national company with local technicians serving San Anselmo street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of California is covered from our California page. The San Anselmo list below covers 2 ZIP codes, 94901 through 94960.

94901 94960

Don't see your ZIP? San Anselmo also uses P.O. Box and single-organization ZIP codes that have no street addresses — call (888) 258-5005 and we will confirm coverage for your street address on the call.

Also serving nearby: San Rafael, CA · Larkspur, CA · Fairfax, CA · Corte Madera, CA · Mill Valley, CA · Belvedere, CA.