San Francisco homes were built across a century of styles, and their duct systems range from original metal in older neighborhoods to flex in attic retrofits. Our negative-air machine seals onto the main trunk and puts the whole system under suction first, then every run is scrubbed individually.
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From an older home with original ductwork to a sealed inland house that ran through smoke season, these are the six duct services San Francisco homeowners book with us. Below is air duct in San Francisco, CA in full — every service, the local conditions and the areas covered.
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. The crews behind air duct cleaning in San Francisco, CA are the same ones who cover the ZIP codes listed below.
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Cleaning & Care
Air Duct Inspection
For a San Francisco home you just bought, the inspection shows the condition of the one system nobody ever shows buyers. 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. It is why air duct inspection in San Francisco, CA keeps getting recommended to neighbors.
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Repair
Air Duct Repair
Crushed, torn or disconnected ducts leak the air you pay to heat and cool. In San Francisco, the repair list often starts overhead: heat-dried joints, shifted takeoffs and brittle flex runs in the attic. We repair and rebuild damaged sections so airflow is strong and even again. Air Duct Repair in San Francisco, CA starts with a real look at the problem — never a guess over the phone.
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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 Francisco County, attic installs are routed and strapped to avoid the sags and kinks that choke older systems here. For air duct installation in San Francisco, CA, one call books the visit and a local tech takes it from there.
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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. Returns get sealed too, so the system stops pulling unfiltered attic or crawlspace air through return gaps. That local standard is what air duct sealing in San Francisco, CA means with Air Duct Service Co.
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Cleaning & Care
Commercial Air Duct Cleaning
Offices, restaurants, retail and multi-unit buildings across San Francisco — scheduled commercial duct cleaning with the same negative-air machine sealed onto the trunk, keeping your space comfortable, compliant and breathing clean. That local standard is what commercial air duct cleaning in San Francisco, CA means with Air Duct Service Co.
Get a free estimateNeed 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.
A duct system in San Francisco 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.
Inland San Francisco summers push attics to extremes, and the ductwork living there ages fast - tape dries, flex jackets get brittle, joints separate. Cooled air leaks overhead while the system runs long afternoons, and sealing is usually where the fix starts.
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.
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.
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.
San Francisco sits in San Francisco County, and the ZIP list at the bottom of this page covers 31 serviceable ZIP codes — 94102 through 94188. The closest served neighbors are Colma, Daly City, Brisbane, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-5005.
Same-day service, free estimates, licensed & insured — and a air duct that lights when you click the remote.
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.
Usually the run serving it: a separated attic joint, a kinked flex run, or a conversion room tied into an undersized trunk. In San Francisco we trace the run on the inspection camera, and repair, sealing or a properly sized new run fixes it at the cause.
Yes - original ductwork is the most common hidden cause of comfort and dust complaints in older San Francisco homes. The camera shows buildup, leaks and undersized returns plainly, and you can decide what, if anything, is worth doing from evidence.
Yes - offices, restaurants, retail, medical suites and multi-unit buildings across San Francisco, scheduled around your hours. Commercial systems get the same method: the negative-air machine sealed onto the trunk, every run cleaned individually, and a camera record of condition.
In inland San Francisco homes with attic systems, leaks spill cooled air into a hot attic on every cycle, and sealing them means the equipment runs less to hold temperature. We leak-check on every inspection and tell you plainly which work would actually pay off.
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.
Air Duct Service Co is a national company with local technicians serving San Francisco 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 Francisco list below covers 31 ZIP codes, 94102 through 94188.
Don't see your ZIP? San Francisco 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: Colma, CA · Daly City, CA · Brisbane, CA · South San Francisco, CA · Sausalito, CA · Belvedere, CA.
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