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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AfterHow Much Does Air Duct Cleaning Cost in San Antonio?
Most San Antonio homeowners pay $350 to $700 for a full air duct cleaning, with the average single-story home landing near $450. Larger two-story homes in areas like Stone Oak or Alamo Heights often run $700 to $1,100 because they have more vents and longer duct runs. Below we break down every line item, what actually moves the price, and where you can save without cutting corners.
Air Duct Cleaning Cost Breakdown (2026)
Here is what the numbers look like across the San Antonio market right now. These ranges reflect real quotes for the equipment and labor involved, not teaser pricing that balloons once the crew is in your attic.
| Service | Typical Cost Range |
|---|---|
| Standard single-system home (up to 1,500 sq ft, 8-12 vents) | $350 – $500 |
| Mid-size home (1,500-2,500 sq ft, 12-18 vents) | $450 – $700 |
| Large or two-story home (2,500+ sq ft, 18-25 vents) | $700 – $1,100 |
| Additional HVAC system (second unit, guest house, casita) | $150 – $300 |
| Dryer vent cleaning (add-on) | $100 – $180 |
| Air duct repair (sealing, reconnecting disconnected runs, patching) | $200 – $650 depending on access and damage |
| Mold or microbial treatment | $300 – $900 |
| Return duct and plenum cleaning | $80 – $200 |
Two things drive almost every price difference you’ll see. The first is vent count. A 1980s ranch house off Bandera Road might have ten registers; a newer build out in Boerne or Helotes can have twenty-plus. That’s more duct length, more extraction time, and more filtration media. The second is access. Ducts buried behind finished drywall, systems set on a slab rather than in an attic, and cathedral ceilings all slow a crew down, and slow time costs money.
At Linden Air Duct Cleaning, every one of these numbers is put in writing before any work begins. You’ll know the full price for your home before a technician unloads a single piece of equipment. That’s not a promotional add-on. It’s how we operate on every job. If you want that written estimate for your specific house, call us at (980) 447-2498 and we’ll walk through it.
What Affects Air Duct Cleaning Pricing in San Antonio
San Antonio isn’t a generic market. The climate here, the housing stock, and how local homes are built all shape what a fair price actually is.
- Number of vents and system size. Each register adds time and filtration. A single-system, ten-vent home takes roughly two to three hours. A 25-vent two-story with a zoned system can take most of a day.
- Age and layout of the home. Homes built in the 1950s and 60s inside Loop 410 often have short, rigid metal duct runs that clean quickly. Newer construction in Stone Oak, Alamo Ranch, and the far Northwest Side uses longer flex duct runs, which hold more dust and take longer to do properly.
- Construction or renovation dust. If you’ve recently remodeled or moved into a newly built home, sheetrock dust and fine debris coat the inside of the ducts. That’s a heavier job than routine maintenance, and it’s one of the most common reasons we’re called out to San Antonio addresses.
- HVAC system type. A single central system is the baseline. Homes with two systems (common on larger two-story builds) or a separate unit for a casita or finished garage get quoted per system.
- Access and attic conditions. South Texas attics hit 130-plus degrees in July and August. Crews working in that heat take longer and need the right safety precautions. Ducts running through a second-floor soffit or behind a knee wall also raise labor time.
- Additional treatments. Mold treatment, sanitizing, or sealing disconnected runs are quoted separately because they’re separate work. They’re not padding on the base price.
One local note worth knowing: San Antonio’s mix of humid spring weather and dry, dusty summers means ducts here pull in both moisture and fine caliche dust. We regularly see duct interiors in the Alamo Heights and Terrell Hills area that have both a damp film near the air handler and dry grit farther out at the registers. A crew that only runs one pass with a vacuum won’t get both. Negative-pressure extraction, where the system holds the ducts under vacuum while brushes knock debris loose, is what handles that combination.
You can read more about how our home service handles San Antonio homes, but the short version is this: we quote by what your house actually needs, not by a flat rate that either overcharges small homes or under-serves large ones.
What a Written Price Before Work Starts Actually Means for You
The duct cleaning industry has a reputation problem, and it’s earned. Homeowners get quoted one number on the phone and a bigger number at the door. We built our process around killing that specific concern.
Before any work begins, you get the price in writing. Not a verbal estimate, not a “we’ll see once we’re in the attic” range. A written number. If the job turns out to be simpler than expected, you don’t pay for work that wasn’t needed. If it turns out to be more involved, that’s on us to have caught during the inspection, and we’ll explain exactly what we found before proceeding.
We also know that letting a stranger into your home is a real decision, especially if you’re home alone, managing kids during the day, or an older homeowner who’s been burned before. Every Linden technician is background-checked and identity-verified through The Threshold Standard. Before your appointment, you’ll get the technician’s name and photo. At the door, they show a photo ID badge. No exceptions, not a special request.
If a repair fails within the covered window, we come back at no charge. Our duct repairs carry a written guarantee with a free second visit if the repair doesn’t hold. You’ll also find the same accountability on dryer vent cleaning and air duct repair work.
How to Save on Air Duct Cleaning in San Antonio
There’s no secret discount code here, but there are legitimate ways to keep your cost down without sacrificing the work.
- Combine services in one visit. If your dryer vent needs attention too, bundling it with duct cleaning usually costs less than two separate trips. Dryer vent lint buildup is a genuine fire risk, so this isn’t just a discount play.
- Ask for the full breakdown up front. A quote that separates base cleaning from return ducts, plenum work, and treatment fees tells you where the money goes. Flat quotes hide that. We give itemized written pricing on every estimate.
- Skip the upsell you don’t need. Not every home needs mold treatment or sanitizing. If your ducts are dusty but dry and free of microbial growth, that’s a cost you can skip. We’ll tell you plainly what your home does and doesn’t need.
- Clean on a maintenance rhythm, not a reaction. Homes that get ducts cleaned every three to five years pay less per visit than homes that go a decade and need heavy extraction. San Antonio’s dust load rewards routine care.
- Get a free estimate before you decide. Call (980) 447-2498 and we’ll talk through your home’s layout, vent count, and last cleaning. That conversation is free, and it’s often where the biggest savings come from, because we can rule out services you don’t actually need.
Repair or Replace? How Duct Problems Affect Your Price
Sometimes the quote comes back higher than expected because the ducts themselves have problems, not because the cleaning is bigger. Disconnected flex runs, crushed sections, and leaks at the plenum are common in San Antonio homes, especially older builds where the original ductwork has been patched over the years.
A disconnected run is worth fixing during a cleaning, because you’re already paying for access. If we’re in the attic anyway, reconnecting and sealing a run costs far less than a return trip. We’ll flag anything we find and quote the repair before we touch it. Every repair we do carries a written guarantee, so if it fails within the covered period, we come back at no charge.
One safety note we’ll never skip: if we find damage to the components that connect to your HVAC system’s electrical or gas side, we’ll stop and tell you to bring in a licensed HVAC technician. Duct cleaning is duct cleaning. Electrical and gas work belongs to the trade that’s licensed for it, and we won’t blur that line just to keep a job moving.
FAQs – Air Duct Cleaning Cost in San Antonio
Is $99 air duct cleaning real?
No. A $99 “whole-home duct cleaning” is a door-opener, not a finished price. In practice those ads lead to a technician arriving, finding “problems,” and quoting $600 or more on the spot to actually do the job. A legitimate full cleaning in San Antonio runs $350 to $1,100 depending on home size. If a price sounds too low to cover the labor and equipment, it is. Call (980) 447-2498 for a written estimate that reflects your actual home.
How often should San Antonio homes get their ducts cleaned?
Every three to five years for most homes. San Antonio’s dusty summers and humid springs mean ducts accumulate faster here than in drier or more stable climates. Homes with pets, recent remodeling, or anyone with allergies should lean toward the three-year end. If it’s been longer than five years, expect a heavier job and a price closer to the top of the range.
Does duct cleaning help with allergies in San Antonio?
It can, especially during our spring and fall pollen stretches, but it’s not a cure. Cleaning removes the dust, pollen, and debris that ducts hold and re-circulate. If your ducts have mold growth from our humid season, that’s a separate treatment quoted at $300 to $900 and it matters more for allergy symptoms than routine dust. We’ll tell you honestly which category your home falls into.
Can you clean my ducts and dryer vent the same day?
Yes, and bundling saves you money. Dryer vent cleaning runs $100 to $180 as an add-on, versus a separate service call. Clogged dryer vents are a leading cause of house fires, so if it’s been more than a year since yours was cleaned, this is worth doing while we’re there. Call (980) 447-2498 to schedule both in one visit.
What happens if the cleaning or repair isn’t right?
We make it right. Every duct repair carries a written guarantee, and if a covered repair fails, we come back at no charge. That’s the 365-Day Done Right Promise, and it’s on every job in writing, not a verbal assurance. If you’re not satisfied after a cleaning, call the number on your invoice and a live person answers, day or night.
Do you charge extra for two-story homes in San Antonio?
Yes, because the work is genuinely larger. Two-story homes in Stone Oak, Alamo Ranch, and the Northwest Side typically have more vents and longer duct runs, which puts them in the $700 to $1,100 range rather than the $350 to $500 single-story range. The written quote reflects your actual vent count, so you’ll see exactly where the number comes from.
Free Estimates for San Antonio Homeowners
Every home is different, and the honest answer is that the only price that matters is the one for your house. We’ll give it to you in writing before any work begins, show the technician’s photo and name before the visit, and stand behind the work with a written guarantee. Call (980) 447-2498 for a free estimate, and a live person will answer whenever you call.
More San Antonio Guides
- Air duct cleaning service in San Antonio
- Dryer vent cleaning cost and service
- Air duct repair for disconnected and crushed runs
- How often air ducts should be cleaned
- Signs you need air duct cleaning
- Dryer vent cleaning in San Antonio
- Air duct repair in San Antonio
- Air duct cleaning in New Braunfels
- Air duct cleaning in Boerne
- Air duct cleaning in Helotes
- Air duct cleaning in Schertz
- Air duct cleaning in Converse
Written by Marcus Veale, Owner at Linden Air Duct Cleaning, serving San Antonio since 2004.
Pricing reflects the San Antonio market as of 2026. Linden Air Duct Cleaning offers free estimates – call (980) 447-2498.
What Our Customers Say
"Priced by the system, not by the vent, and he told me up front. No pressure to add the sanitizer and I said no without any fuss."
- Faith N."We had construction dust packed into every register after a remodel. They sealed off the returns, used negative pressure, and left the floors cleaner than they found them."
- Paul E."I liked that I knew who was coming in. Name and photo texted ahead, badge at the door. He was quiet, careful with the furniture, and thorough."
- Cheryl A.