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 standard air duct cleanings in San Antonio run $350 to $700 for a typical single-story home with one HVAC system, and a two-story home with two systems usually lands between $600 and $1,100. Vent-only cleanings (no trunk line work) start closer to $250, while homes with heavy dust, recent remodeling, or pest debris can push past $1,200. Those numbers assume a licensed crew, professional equipment, and real containment – not a shop-vac and a leaf blower.
At Cardinal Air Duct Cleaning, you get a written price before a single register is pulled, it does not change at the door, and every job carries the 365-Day Done Right Promise. Call (737) 727-2314 and a live person picks up, any hour. We give you an exact range for your home in about five minutes on the phone.
Key Takeaways
- Typical San Antonio home: $350 – $700 for one system, $600 – $1,100 for two.
- Written price before work starts – never a verbal guess that shifts once the tech is inside.
- Every job backed by a written guarantee and a free second visit if a repair fails, good for 365 days.
- Professional-grade equipment matters: Rotobrush rotary brush systems, Nikro HEPA vacuums, and Abatement Technologies containment.
- You’ll get before-and-after photos and a digital invoice you can pay from your phone.
Air Duct Cleaning Cost Breakdown (2026)
Here’s how the pricing lands for San Antonio homes this year. These are the ranges our techs quote most often, before any add-ons.
| Service | Typical Price Range | Notes |
|---|---|---|
| Standard duct cleaning, 1 HVAC system | $350 – $700 | Vents, returns, trunk lines, one main system |
| Standard duct cleaning, 2 HVAC systems | $600 – $1,100 | Typical for two-story San Antonio homes |
| Vent-only cleaning | $250 – $400 | No trunk line work; smaller footprint homes |
| HVAC coil + blower cleaning | $150 – $350 add-on | Separate from ductwork; often bundled |
| Dryer vent cleaning | $125 – $250 | Single vent run; longer or roof-terminated runs cost more |
| Sanitizing / antimicrobial fogging | $75 – $200 | Optional; useful after pest or moisture issues |
| Filter replacement (Aprilaire, Honeywell) | $30 – $120 | Depends on media type and filter size |
| Heavy debris / remediation surcharge | $150 – $500 | Remodel dust, rodent nesting, water-damaged ducts |
What pushes a job toward the top of the range? Number of systems is the biggest factor, followed by system age, how much debris is in the trunk lines, and whether the return plenum needs containment work. Homes in older San Antonio neighborhoods like Monte Vista or Beacon Hill, where original ductwork has been patched over decades, routinely need more time than a newer build out in Stone Oak. If you’ve recently remodeled, drywall dust gets pulled through the returns and settles everywhere – that alone can add a couple hundred dollars to the visit.
What keeps a job at the low end? A single system, accessible attic or closet ductwork, and no moisture or pest problems. When we arrive, we do a walkthrough and confirm the scope before touching anything. That walkthrough is why the number you’re quoted on the phone is the number on your invoice. Read more about how our service works if you want the full picture before you book.
What Affects Air Duct Cleaning Pricing in San Antonio
Six things move the price the most. None of them are surprises when you know what to look for.
- Number of HVAC systems. A two-story home with an upstairs and downstairs unit means two separate duct networks, two returns, and roughly double the labor. This is the single biggest driver of cost difference in San Antonio.
- Home size and duct length. A 1,400-square-foot home in Alamo Heights runs a shorter duct network than a 3,500-square-foot house out near Boerne Stage. Longer runs mean more brush passes and more vacuum time.
- Duct material. Flexible duct (the foil-wrapped corrugated kind) traps debris in its ridges and needs slower, more careful cleaning than rigid sheet metal. Older homes with rigid galvanized ducts often clean faster and cheaper.
- Debris level. Restaurants, pets, smokers, and recent remodels all load up the system. Rodent activity in the attic – common here in spring when temperatures swing – leaves nesting material and droppings that require containment and sanitizing.
- Accessibility. Attic runs in a 110-degree San Antonio July are slower to work than a ground-floor closet setup. Tight attic spaces or ducts buried under blown-in insulation add time and cost.
- Add-ons. Coil cleaning, sanitizing, dryer vent work, and filter upgrades all bundle in. Many homeowners pair duct cleaning with dryer vent service since both share a similar debris problem.
One thing that does not move the price at Cardinal: the quoted number. Once we’ve walked the home and handed you a written price, it holds. No upcharges, no “well, we found something unexpected” conversation while the equipment is already running.
How We Do the Work (and Why Equipment Matters)
The tools a crew brings determine the outcome. A truck-mounted shop-vac pulls loose surface dust and leaves the stuck-on layer behind. Professional work looks different.
We run Rotobrush rotary brush systems, which use a spinning brush head on a flexible whip to agitate debris off the duct walls. That’s paired with Nikro HEPA-rated vacuums doing negative-pressure extraction – meaning the loosened debris goes straight into the vacuum, not back into your living room. On jobs that need it, we deploy Abatement Technologies containment units to seal off the work zone. We also stock filtration from Honeywell, Aprilaire, and Guardsman, so if your filter setup needs an upgrade, we handle it in the same visit.
Every technician is background-checked and arrives in uniform. You’ll know their name before you open the door. And when the work is done, you’ll see before-and-after photos and get a digital invoice you can pay from a link on your phone.
How to Save on Air Duct Cleaning
Real ways to keep the number down, without cutting the work that actually matters.
- Bundle services. Doing duct cleaning and dryer vent cleaning in one visit usually beats booking them separately. Same trip, same setup, less overhead passed to you.
- Book in the shoulder seasons. Spring and fall are quieter in San Antonio than the peak summer AC scramble. Scheduling in March or October often means more flexibility and sometimes better rates.
- Start with an honest estimate. Some homes genuinely don’t need a full cleaning yet. If your ducts are in decent shape, we’ll tell you. Free estimates mean there’s no cost to finding out – call (737) 727-2314.
- Handle the small stuff yourself. Replacing standard filters on schedule (every 1 – 3 months in San Antonio’s dusty, pollen-heavy air) keeps debris from building up in the first place. Cleaner ducts between professional visits mean less work when we show up.
- Fix moisture problems first. A leaky duct near a sweaty attic line breeds mildew fast in our humidity. Addressing the source before cleaning prevents the problem from coming right back.
- Ask about multi-system discounts. When a home has two systems, ask whether both can be done in one visit at a combined rate. It’s a straight question and worth asking.
The biggest savings come from avoiding the problem entirely and catching issues early. A yearly duct check costs far less than remediation after a rodent infestation or water event. Our inspection process walks the whole system, not just the vents you can see.
Repair vs. Replace: When Duct Cleaning Isn’t the Fix
Cleaning fixes dirty ducts. It does not fix crushed ones, disconnected joints, or ducts that leak 30% of your conditioned air into the attic. If a camera inspection shows damage, the honest recommendation is repair or replacement – and cleaning alone won’t solve the comfort problem.
We can usually tell on arrival which situation you’re in. If it’s a repair, that work carries a written guarantee, plus a free return visit if the repair fails. If it’s replacement, we’ll say so plainly rather than sell you a cleaning that won’t help.
Can You Clean Air Ducts the Same Day in San Antonio?
Often yes. Same-day and next-day slots are frequently available, especially for standard single-system homes. When you call (737) 727-2314, a live person answers any hour and gives you a real arrival window you can track through The Relay Standard booking experience.
The Relay Standard means a live, trackable arrival time instead of a four-hour “sometime this afternoon” window. You’ll get a heads-up before the tech arrives, so you’re not stuck waiting.
FAQs – Air Duct Cleaning Cost
How much does air duct cleaning cost in San Antonio?
Most San Antonio homes pay $350 to $700 for a single-system cleaning, and $600 to $1,100 for two systems-see our San Jose, CA price guide for Silicon Valley-area pricing. Vent-only jobs start around $250. The exact number depends on system count, home size, and debris level. Call (737) 727-2314 for a free estimate – we’ll give you a range in minutes.
Is it cheaper to clean or replace air ducts in San Antonio?
Cleaning is almost always cheaper up front – typically $350 to $1,100 versus $2,000 and up for replacement. But if your ducts are crushed, leaking, or disconnected, cleaning won’t fix the underlying problem. We’ll tell you which situation you’re in after inspecting the system. Call (737) 727-2314 and we’ll help you decide before you spend anything.
How much does duct cleaning add to an HVAC service?
Bundling duct cleaning with HVAC coil and blower cleaning usually costs $150 to $350 more than duct work alone. It’s worth doing together since the coil and blower sit at the center of the system and catch whatever the ducts don’t. Call (737) 727-2314 to price a combined visit.
Do I need to be home during the cleaning?
Yes, it’s best to be home. A standard single-system cleaning typically runs 2 to 3 hours, and a two-system home can take 3 to 5 hours. Being there lets us walk you through the before-and-after photos and confirm the scope. Call (737) 727-2314 to lock in a time that works.
Why is my quote higher than another company’s?
Cheaper quotes usually skip containment, use a shop-vac instead of HEPA extraction, or don’t count both systems. Those shortcuts show up later as dust resettling or a system that still runs dirty. Our written price covers professional equipment, background-checked techs, and the 365-Day Done Right Promise. Call (737) 727-2314 and we’ll show you exactly what’s included.
What You Get With Cardinal Air Duct Cleaning
Cardinal is part of the Relay Home Co. family, founded in 2005. Every location is independently owned but held to The Relay Visibility Guarantee, which means the same standard in every home:
- Written price before any work starts – always included, never optional.
- 365-Day Done Right Promise – if the work isn’t right within a year, we come back and correct it at no charge.
- Written guarantee on every repair, plus a free second visit if the repair fails.
- Live, trackable arrival window and a head’s-up before the tech arrives.
- Before-and-after photos and a digital invoice payable by link.
- A live person on the phone, 24/7 – no voicemail loops.
We don’t do countdowns or pressure tactics. We give you a number, explain it, and let you decide. That’s the whole model.
Ready to Get Your Price?
Air duct cleaning in San Antonio runs $350 to $1,100 for most homes, and you deserve to know exactly where your home falls before anyone shows up-check our San Francisco, CA price guide to see how costs compare in the Bay Area. Call (737) 727-2314 for a free estimate. A live person answers any time, hands you a written price, and books a window you can actually track. That’s The Relay Standard – and it’s how we’ve done it since joining the Relay Home Co. family in 2005.
Pricing reflects the San Antonio market as of 2026 and is written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving San Antonio since 2005. Cardinal offers free estimates – call (737) 727-2314.
What Our Customers Say
"Booked a slot in the app, got a reminder text, and watched the crew's van on the map as it came. Cleaned all the vents and the main trunk. Easy from start to finish."
- Rob J."Cleaning plus HVAC coil clean. Tech texted when he was ten minutes away. No surprises on the price."
- Evan S."Dryer vent fix fixed the burning smell. The clog was behind the elbow and the whole laundry room smells normal now."
- Dennis K.