Clean vent register grille on the wall of a home

Same-day air duct service in San Antonio, TX

Air Duct Servicesin San Antonio, TX

When the AC runs ten hours a day, even a modest dust load inside the ductwork gets delivered to every room thousands of times a season in Bexar County. A trunk-first cleaning and an honest leak check are the two things that actually change what the house breathes.

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Air Duct Service Co — San Antonio, TX

Every air duct service, one San Antonio call

Cleaning, inspection, repair, installation, sealing and commercial work - the full air duct service list for San Antonio, with free inspections and the same crew on every job. This page covers air duct in San Antonio, TX end to end — the services, the local picture and the ZIP codes served.

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 Antonio, attic systems get the same trunk-first treatment, with every sagging flex run scrubbed along its full length. Air Duct Cleaning in San Antonio, TX is one call away, every day of the week.

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

Cleaning & Care Air Duct Inspection

Around San Antonio, findings come back in plain language: what is clean, what needs work soon, and what can safely wait. 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. The crews behind air duct inspection in San Antonio, TX are the same ones who cover the ZIP codes listed below.

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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. We repair and rebuild damaged sections so airflow is strong and even again. Air Duct Repair in San Antonio, TX starts with a real look at the problem — never a guess over the phone.

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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. Air Duct Installation in San Antonio, TX runs on one standard: done properly, checked, and shown to you before we leave.

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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. Air Duct Sealing in San Antonio, TX is one call away, every day of the week.

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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 Antonio — scheduled commercial duct cleaning with the same negative-air machine sealed onto the trunk, keeping your space comfortable, compliant and breathing clean. In Bexar County, property managers get a camera record of each system, so condition is documented unit by unit. The crews behind commercial air duct cleaning in San Antonio, TX are the same ones who cover the ZIP codes listed below.

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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 Antonio ducts have San Antonio problems

A duct system in San Antonio cools through a brutal, months-long season from inside a superheated attic. This is what we actually find here, and what we check on every visit.

Cooling the attic by accident

When attic joints separate, a San Antonio system spills cooled air into the one space that never needs it. The rooms below drift warm, the unit runs near-constantly on the hottest days, and the cause sits overhead: leaks that sealing fixes for good.

Cedar, oak and grass pollen

Texas pollen is famous for a reason - cedar in winter, oak in spring, grasses after that. Return ducts store each wave and recirculate it between seasons, so the house keeps a pollen reserve long after the outdoor count drops.

Slab homes, all-attic systems

With no basements, San Antonio ductwork lives entirely in the attic - long flex runs snaking over joists, sagging between straps and kinking at turns. A sagging run traps dust and slows airflow; a kinked one starves the room it feeds, usually the far bedroom.

Two systems, twice the ductwork

Two-story San Antonio homes usually carry separate upstairs and downstairs systems, which means two trunks aging on their own schedules. The upstairs system - all attic, all heat - almost always needs attention first, and it is the one driving the summer comfort complaints.

San Antonio sits in Bexar County, and the ZIP list at the bottom of this page covers 65 serviceable ZIP codes — 78201 through 78285. The closest served neighbors are Balcones Heights, Olmos Park, Alamo Heights, 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 Antonio asks

Why does my AC run all day and still not cool?

Before blaming the unit, check the ducts. In San Antonio, separated attic joints and leaking returns are behind a large share of weak-cooling calls: the system loses cooled air overhead and pulls hot attic air in its place. An inspection shows both on camera, and sealing plus repair often restores cooling the equipment always had.

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 travels 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 dirty ducts make allergies worse here?

They hold the reservoir. Cedar, oak and grass pollen collect in the returns across their seasons and keep recirculating between them, so a San Antonio house can feel pollinated in a month when nothing outside is blooming. Cleaning the trunk and returns removes that stored load.

Why is the far bedroom always hot?

It sits at the end of the longest attic run, and that run sags, kinks or leaks on the way in most Bexar County homes. Air arrives weak and warmed. Tracing the run on inspection, then repairing, re-strapping and sealing it, is the usual fix - no larger AC required.

What are the signs my ducts are leaking?

Rooms that never reach the set temperature, an AC that runs long cycles on ordinary days, dust that returns quickly after cleaning and an attic hatch that feels cool when the system runs. Failed tape in attic heat is the standing San Antonio culprit, and mastic sealing is the lasting repair.

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 Antonio, TX ZIP codes we serve

Air Duct Service Co is a national company with local technicians serving San Antonio street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of Texas is covered from our Texas page. The San Antonio list below covers 65 ZIP codes, 78201 through 78285.

78201 78202 78203 78204 78205 78206 78207 78208 78209 78210 78211 78212 78213 78214 78215 78216 78217 78218 78219 78220 78221 78222 78223 78224 78225 78226 78227 78228 78229 78230 78231 78232 78233 78234 78235 78236 78237 78238 78239 78240 78241 78242 78243 78244 78245 78247 78248 78249 78250 78251 78252 78253 78254 78255 78256 78257 78258 78259 78260 78261 78263 78264 78266 78284 78285

Don't see your ZIP? San Antonio 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: Balcones Heights, TX · Olmos Park, TX · Alamo Heights, TX · Terrell Hills, TX · Castle Hills, TX · Leon Valley, TX.