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Before
AfterHow Much Does Duct Cleaning Cost in San Antonio?
Duct cleaning in San Antonio typically costs between $300 and $650 for a full-system cleaning of a standard 1,500 to 2,500 square foot home. Most homeowners in neighborhoods like Stone Oak, Alamo Heights, and Helotes pay around $420 to $480 for a complete job that includes all supply and return ducts, the main trunk lines, and the air handler. Larger homes, older systems with heavy buildup, or jobs that include sanitizing and deodorizing can push the total to $850 or more.
We give every customer a written price before any work starts, so there’s no guessing and no surprise line items at the end of the job. If you’d like a free estimate for your home, call us at (361) 470-8872 and a live person will answer, day or night.
Key Takeaways
- Typical duct cleaning in San Antonio runs $300 – $650, with most jobs landing between $420 – $480.
- Add-on services like sanitizing, mold treatment, or dryer vent cleaning typically add $75 – $200 each.
- Your home’s size, number of vents, accessibility of the ductwork, and how long it’s been since the last cleaning are the biggest cost drivers.
- Brandt HVAC provides a written price before work begins, every time, with no exceptions.
Duct Cleaning Cost Breakdown (2026)
Here’s what we see across the San Antonio market for duct cleaning as of 2026. These are real ranges based on the homes we service in Alamo Heights, Helotes, Shavano Park, Boerne, and everywhere in between.
| Service | Typical Price Range | What’s Included |
|---|---|---|
| Full duct cleaning (up to 10 vents) | $300 – $450 | Supply and return ducts, trunk lines, air handler blow-out |
| Full duct cleaning (10 – 16 vents) | $400 – $550 | All ducts, trunk lines, air handler, plus register cleaning |
| Full duct cleaning (17+ vents or 2 systems) | $550 – $750 | All ducts, both systems if applicable, detailed coil inspection |
| Sanitizing / antimicrobial fogging | $100 – $200 | Application to all supply and return ducts and plenums |
| Dryer vent cleaning (add-on) | $75 – $150 | Full dryer vent line from dryer to exterior |
| Return air duct replacement (if damaged) | $200 – $400 | Labor and materials for a standard return plenum |
| Air handler / blower housing cleaning | $100 – $200 | Access, vacuum, and wipe-down of blower assembly |
Those are the numbers we quote in this market. The single biggest variable is the number of vents and returns in your home. A 1960s ranch in Oak Hills with eight vents costs less to clean than a two-story home in Cibolo with 18 vents, two returns, and a zoned system. The second biggest variable is how long it’s been. If ducts haven’t been cleaned in a decade, the buildup requires more passes and more labor, and that pushes the price toward the higher end of the range.
We don’t pad quotes to cover unknown conditions. The written price covers the work as described, and that’s what you pay. For a free estimate on your specific home, call (361) 470-8872.
What Affects Duct Cleaning Pricing in San Antonio
Every home is a little different. These are the factors that move the price up or down in San Antonio specifically, based on the houses and duct systems we actually see here.
- Number of vents and returns. More vents mean more time on the ladder. A 2,800-square-foot home in Stone Oak with 16 supply runs and three returns simply takes longer than a 1,300-square-foot house in Terrell Hills with eight vents.
- Age and condition of the ductwork. San Antonio has a lot of homes built in the 1950s through 1980s, and many still have original metal ductwork. Rust, crumbling insulation, and years of dust mean slower work and, in some cases, repairs before cleaning makes sense. Flex duct installed in the 1990s is easier to clean but more prone to tears if handled roughly.
- Accessibility of the air handler. In many San Antonio homes, the air handler is in a closet, a garage, or a hot attic. Attic access in August is a real factor: our techs do the same thorough job, but a cramped, 130-degree attic adds time. We don’t cut corners on it.
- Pets and smoke. Homes with multiple dogs or cats, or any history of indoor smoking, usually have heavier buildup on the filter screens, blower wheel, and duct walls. That means more cleaning passes and sometimes sanitizing to get the odor out.
- Mold or moisture concerns. San Antonio humidity is real, and it does show up in ductwork. If we spot mold, we’ll tell you plainly. Cleaning it is only part of the fix – you’ll also want to address the moisture source. We can walk you through what we see and what it means before you spend a dollar.
- Add-ons: Sanitizing fogging, dryer vent cleaning, or UV light installation are separate line items. Each one adds $75 – $200 or more depending on your system. We price each add-on separately on the written quote, so you can take it or leave it.
One thing that doesn’t affect price: how we treat you at the door. Every Brandt HVAC technician arrives in uniform, with a photo ID badge, and we send you their name and photo before they show up. That’s the Threshold Verified standard, and it costs you nothing.
How to Save on Duct Cleaning
There are honest ways to keep duct cleaning affordable in San Antonio without compromising the work. Here’s what we tell our own customers.
- Change your filter before you call. A fresh filter helps, but it won’t undo years of buildup in the ducts. What it does do is give us a cleaner starting point and make the job slightly faster. That means a lower labor total on some jobs.
- Combine services. If you’re having your system tuned up anyway, ask us about adding duct cleaning to the same visit. Combining a home HVAC tune-up with duct cleaning often saves $40 – $80 compared to booking them separately.
- Clean the easy things yourself. You can vacuum your vent covers and wipe down the registers with a damp cloth. It’s simple, it’s safe, and it’s something every homeowner should do seasonally. It won’t clean the ductwork inside, but it keeps surface dust from getting pulled back in.
- Don’t buy duct cleaning from a door knocker. San Antonio gets its share of traveling crews offering $99 whole-house duct cleaning. That number is almost always a bait price. The final invoice ends up at $400 – $700, and the work is often not done with real equipment. A real duct cleaning uses negative air machines, brush systems, and takes two to four hours. If someone says 45 minutes for $99, hang up.
- Get a written price before the work starts. That’s our rule, and it should be yours with any company you hire. If they can’t or won’t put the number in writing before starting, find someone else. We give you a written price on every quote, no exceptions.
Call (361) 470-8872 for a free estimate. We’ll tell you what your system needs, what it doesn’t, and what the written price is. No pressure, no gimmicks.
What Duct Cleaning Actually Involves in San Antonio
This is the part most people don’t know. Duct cleaning, done right, is not just vacuuming out vent openings. The real work happens in the trunks, the returns, and the air handler.
A proper job starts with sealing off the supply and return registers, then connecting a negative air machine to the duct system. That machine pulls the entire system under vacuum, so dust doesn’t blow back into your living room while we work. We then run agitation tools through each duct run to break loose the film of dust, pollen, and San Antonio’s distinctive limestone dust that clings to the walls of the ducts. The debris gets pulled back to the machine and collected.
After the ducts are clean, we open the air handler and inspect the blower wheel, the evaporator coil, and the drain pan. On most San Antonio homes, the coil is dirty enough to notice. We’ll show you before and after, and if the coil needs deeper cleaning, we’ll tell you directly and give you a separate written price.
If we spot mold, we do not pretend sanitizing fixes the root cause. San Antonio humidity makes moisture problems common, especially in homes where the AC runs constantly from May through September. We’ll show you the source, whether it’s a clogged drain line, a leaking duct in a humid attic, or something else, and give you options.
For homeowners who want to know exactly who is in their home, here’s how we work: when you book a Duct Cleaning in San Antonio appointment with us, you get the technician’s name and photo before the visit, and they wear a photo ID badge at your door. We don’t send people you weren’t told to expect. That promise is part of the Threshold Verified standard, and we stand behind it.
How Often Should You Clean Your Ducts in San Antonio?
The short answer: every 3 to 5 years for most homes. In San Antonio, there are a few local factors that push many homeowners toward the 3-year mark.
- Dust and dirt. San Antonio sits on limestone and clay, and our dry months kick up a lot of fine dust. If you live near new construction in areas like Schertz, Converse, or Fair Oaks Ranch, you’re breathing that construction dust year-round. It ends up in the ducts.
- Pets. Two dogs and a cat can generate enough hair and dander to make annual checkups worth it, even if full cleaning stays at 3 to 5 years.
- Allergies. Cedar fever in December and January, mountain cedar through spring, and ragweed in fall are facts of life here. Clean ducts don’t cure allergies, but dirty ducts keep redistributing dust and pollen back into the air every time the blower runs.
- Renovation dust. If you’ve done drywall work, flooring removal, or major remodeling, have the ducts cleaned afterward. Sheetrock dust will settle in the ducts and then circulate for years.
The best time to clean ducts in San Antonio is spring or fall, when the AC isn’t running around the clock and the schedule is more flexible. But we take calls 24/7 and will schedule your cleaning when it works for you. A live person answers at (361) 470-8872, even on weekends and holidays.
Is Duct Cleaning Worth It in San Antonio?
It depends on your house. Here’s the straight talk.
If your home has been lived in for more than five years with no duct cleaning, you have dust layered in duct walls, probably a dirty blower wheel, and possibly a film on the evaporator coil. Cleaning makes the air fresher, can improve airflow, and gives you a baseline for knowing exactly what’s in your system. In our experience across San Antonio, the homes that benefit most are older homes with original ducts, homes with pets, homes with smokers, and homes with allergy-sensitive family members.
If your home is brand new or the ducts were cleaned in the last two years, you probably don’t need it yet. We’ll tell you that too. We’d rather earn a customer for life than sell a job no one needs. If you call us and we don’t think your ducts need cleaning, we’ll say so and recommend a home tune-up instead.
One warning: don’t fall for health claims that duct cleaning cures asthma or allergies. That’s not how it works. Clean ducts reduce recirculated dust, but duct cleaning is not a medical treatment. Any company that promises a medical cure from duct cleaning is misrepresenting the service.
FAQs – Duct Cleaning Cost
How much does duct cleaning cost in San Antonio?
Duct cleaning in San Antonio costs $300 to $650 for a standard single-family home. Most jobs fall between $420 and $480. Your exact price depends on the number of vents, the size of your system, and the condition of your ductwork. Call (361) 470-8872 for a free, written estimate.
Is it cheaper to clean ducts or replace them?
Cleaning is almost always cheaper. A professional duct cleaning runs $300 to $650, while replacing ductwork in an average San Antonio home costs $2,500 to $6,000 or more depending on access and material. Replacement only makes sense if the ducts are damaged, disconnected, or filled with mold. If you’re unsure which you need, we’ll inspect and tell you honestly.
How much does sanitizing cost after duct cleaning?
Sanitizing or antimicrobial fogging after a duct cleaning typically adds $100 to $200 in San Antonio. This service treats the interior duct surfaces to reduce bacteria and odor. Not every home needs it, and we only recommend it when we see a reason to. Get the written price before deciding.
Can you come today for duct cleaning?
Often yes. We keep same-day and next-day slots for duct cleaning across San Antonio, and our phones are staffed by a live person 24 hours a day. Call (361) 470-8872 and we’ll tell you exactly when we can be there and who will be standing at your door, with their name and photo sent to you beforehand.
Does the price include cleaning the air handler and coil?
A standard duct cleaning includes blowing out the air handler housing and inspecting the coil. A deeper coil cleaning, if needed, is priced separately and typically adds $100 to $200 depending on access. We show you the coil before and after, and we never add the service without your written approval.
How long does duct cleaning take?
Most San Antonio homes take 2 to 4 hours for a full duct cleaning. Larger homes, two-system houses, or heavy buildup can take up to 6 hours. We set the expectation in writing before we start, so you know how long we’ll be in your home.
Get a Free Duct Cleaning Estimate in San Antonio
You don’t need to guess what duct cleaning costs in your home. Call Brandt HVAC Co San Antonio at (361) 470-8872 and we’ll give you a free, written estimate. No work starts until you see the price in writing and approve it.
When you call, a live person answers, not a phone tree. You’ll know the technician’s name and see their photo before they arrive, and they’ll show you a photo ID badge at the door. That’s how Devin Marlowe runs every job, and it’s the standard we hold for every home we enter. If the repair or cleaning ever fails within the 365-day guarantee period, we return at no charge, no argument, under the 365-Day Done Right Promise.
Pricing reflects the San Antonio market as of 2026. Brandt HVAC Co San Antonio offers free estimates – call (361) 470-8872.
Written by Devin Marlowe, Owner at Brandt HVAC Co San Antonio, serving San Antonio since 2003.
What Our Customers Say
"Frozen evaporator coil in July. Cleaned it, replaced a clogged filter, and checked the airflow. Gave me a simple schedule for filters."
- Hannah L."Maintenance plan is simple and the tech showed me the readings, not just said it was fine."
- Maribel C."Condenser fan motor replaced the same day. Clean, quick, and the quote didn't change."
- Lamar R.