Metal ductwork running through a home, insulated and sealed at the joints

Same-day air duct service in Sunnyvale, CA

Air Duct Servicesin Sunnyvale, CA

After a smoky summer, Santa Clara County homes can hold onto the smell long after the air outside clears - because the ductwork stored the fine particles and keeps recirculating them. A trunk-first cleaning removes the reservoir the smoke settled into.

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Air Duct Service Co — Sunnyvale, CA

Every air duct service, one Sunnyvale call

From an older home with original ductwork to a sealed inland house that ran through smoke season, these are the six duct services Sunnyvale homeowners book with us. Below is air duct in Sunnyvale, 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. In Santa Clara County, open-window months load systems steadily, and every run gets scrubbed along its full length. Booking air duct cleaning in Sunnyvale, CA takes one call, and the tech arrives with everything the job needs.

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

Cleaning & Care Air Duct Inspection

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. That is air duct inspection in Sunnyvale, CA, done the way it should be.

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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. Damaged sections are rebuilt and sealed with mastic, so the fix holds through heat, damp and the odd tremor. We repair and rebuild damaged sections so airflow is strong and even again. When neighbors talk about air duct repair in Sunnyvale, CA, this is the visit they mean.

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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. Older-home retrofits plan the return properly - the undersized return is the classic original-system flaw. For air duct installation in Sunnyvale, CA, one call books the visit and a local tech takes it from there.

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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. In Santa Clara County, a sealed system also keeps smoke-season air where it belongs - inside, filtered, instead of leaking at every joint. It is why air duct sealing in Sunnyvale, CA keeps getting recommended to neighbors.

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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 Sunnyvale — scheduled commercial duct cleaning with the same negative-air machine sealed onto the trunk, keeping your space comfortable, compliant and breathing clean. The same negative-air method scales up: one machine sealed onto the trunk, every run cleaned individually, no shortcuts on bigger systems. It is why commercial air duct cleaning in Sunnyvale, CA keeps getting recommended to neighbors.

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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

Sunnyvale ducts have Sunnyvale problems

A duct system in Sunnyvale 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.

The smell that outlasts the smoke

Owners across Santa Clara County notice it every year: weeks after a smoke event, the AC or heat still carries a faint campfire note at startup. That is smoke residue stored in duct dust, releasing a little with every cycle. Cleaning the reservoir is what ends it.

Inland heat bakes attic systems

Inland Sunnyvale 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.

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.

Earthquake country shakes joints loose

Small tremors are a fact of life in Sunnyvale, and duct joints in attics and crawlspaces shift a little with each one. Over years, takeoffs loosen and seams open. A comfort problem with no obvious cause is worth a camera look at the connections overhead.

Sunnyvale sits in Santa Clara County, and the ZIP list at the bottom of this page covers 4 serviceable ZIP codes — 94085 through 94089. The closest served neighbors are Santa Clara, Mountain View, Cupertino, 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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How it works

How it works in Sunnyvale, CA

Every Sunnyvale visit runs the same way — booked in one call, checked inside the ducts, and finished with the before-and-after shown to you, not just described.

1. You call, we book

Call (888) 258-5005 and tell us what the house is telling you — dust that comes back within days, rooms that never quite cool, airflow that feels weak. We book a local Sunnyvale tech, same day whenever a slot is open.

2. Free duct inspection

The visit starts with a look inside the ductwork — at the registers and at the main trunk — so the diagnosis is something you can see for yourself, and the inspection is free.

3. The work itself

A negative-air machine seals onto the main trunk and pulls debris out under vacuum while each register is cleaned in turn, so the dust leaves through the machine — not into your Sunnyvale home.

4. Before and after, shown

You see inside the ducts before we start and after we finish, and any work beyond the cleaning is priced and agreed before it begins. Estimates are always free.

Reviews

Sunnyvale reviews

5 stars — based on 100+ reviews. Sunnyvale homeowners rate Air Duct Service Co five stars across Google and Facebook, and they mention the same things: the free inspection, the sealed negative-air setup that keeps the dust out of the house, and ducts they could see before and after. Call (888) 258-5005 and put us to the same test.

Questions

Asked the way Sunnyvale asks

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.

Why does one room never cool like the rest?

Usually the run serving it: a separated attic joint, a kinked flex run, or a conversion room tied into an undersized trunk. In Sunnyvale we trace the run on the inspection camera, and repair, sealing or a properly sized new run fixes it at the cause.

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 Sunnyvale, heat-dried tape and shifted joints are the standing culprits, and mastic sealing is the lasting fix.

Do you clean ducts in commercial buildings here?

Yes - offices, restaurants, retail, medical suites and multi-unit buildings across Sunnyvale, 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.

Will sealing ducts help my energy use?

In inland Sunnyvale 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.

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

Sunnyvale, CA ZIP codes we serve

Air Duct Service Co is a national company with local technicians serving Sunnyvale 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 Sunnyvale list below covers 4 ZIP codes, 94085 through 94089.

94085 94086 94087 94089

Don't see your ZIP? Sunnyvale 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: Santa Clara, CA · Mountain View, CA · Cupertino, CA · Los Altos, CA · Los Altos Hills, CA · Saratoga, CA.