Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Styles & brands we work with
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Before
AfterCommercial Duct Cleaning in San Antonio, TX
Commercial duct cleaning in San Antonio typically runs between $0.25 and $0.45 per square foot, with most office and retail spaces landing in the $900 to $3,200 range depending on square footage, ceiling height, and how long the system has gone without service. Our crews at Cardinal Air Duct San Antonio clean restaurant kitchens, medical offices, daycare centers, warehouses, and retail storefronts across Bexar County using negative-pressure extraction and rotary brush systems from Rotobrush and Nikro. If you manage a commercial property anywhere from the Medical Center to Brooks City Base, call (254) 347-3897 for a written quote before any work begins.
We’re the commercial branch of Cardinal’s Air Duct Cleaning division, and we bring the same playbook to every job: a written price handed to you before we touch a single register, background-checked technicians in uniform, and a 365-day guarantee on the work. Commercial buildings in San Antonio have their own set of problems, from construction dust in the Pearl District renovations to grease-laden air in Stone Oak restaurant kitchens to the fine limestone grit that blows in from the Hill Country and settles into return plenums. This page covers who needs the service, what we actually do on site, what it costs, and the questions building managers ask us most.
Cardinal Air Duct San Antonio is part of the home services family of Relay Home Co., founded in 2005. Every commercial booking runs on The Relay Standard: a live trackable arrival window, before-and-after photo documentation of the ductwork, and a digital invoice you can pay from your phone. No four-hour arrival windows, no price that moves once the tech is inside.
Key Takeaways for San Antonio Building Managers
- Cost range: Most commercial duct cleaning jobs in San Antonio fall between $900 and $3,200. Restaurants and medical facilities run higher because of grease and regulatory requirements.
- Timeline: A 5,000 square foot office takes about 4 to 6 hours. Larger facilities or heavy buildup can take a full day or two.
- Disruption: We work nights and weekends for restaurants, medical suites, and retail spaces so you don’t close for a day.
- Guarantee: Every commercial job is covered by the 365-Day Done Right Promise. If the work isn’t right, we come back at no charge.
- Price certainty: Written price before work starts. Always. No exceptions, no door-day surprises.
When You Need Commercial Duct Cleaning
San Antonio’s climate loads the deck against commercial HVAC systems. Summer days above 100°F force rooftop units to run 18 hours a day for months straight. High humidity breeds microbial growth inside duct liner. Spring brings oak pollen and cedar fever season, and fall brings dust from construction sites along Loop 1604. Here’s what building managers and owners tell us before they call:
- Dust accumulating on desks, shelves, and product within days of cleaning. That dust is not coming from outside. It’s recirculating through your ductwork because the filtration is bypassed or the return plenum is coated with years of buildup.
- Stuffy rooms or uneven temperatures between suites. One tenant on the east side of the building freezes while the west side sweats. Blocked duct runs and collapsed flex duct are the usual culprits. It’s not always a balancing issue.
- Odors that linger after the HVAC cycles off. Commercial kitchens deal with grease vapor. Medical buildings deal with biological material. Offices deal with musty, stale air from condensation inside the system. If you smell it when the unit kicks on, the ducts are holding it.
- Visible dust or debris at supply registers. Dark streaks at diffuser edges or visible dust balls on vent covers mean the interior of the duct is worse than what you can see.
- Staff complaints about allergies, headaches, or respiratory irritation. Employees spending eight hours a day breathing recirculated air that runs through a dirty coil and dust-lined ducts will feel it. HR complaints about “sick building” correlate strongly with neglected duct systems.
- Post-construction or renovation dust. San Antonio’s building boom around the Rim, Alamo Ranch, and downtown means drywall dust, carpet fibers, and paint overspray end up inside ducts of newly finished spaces. Builders rarely clean them before handover.
In San Antonio’s restaurant scene, especially around the Broadway corridor and Southtown, we regularly find grease accumulation inside exhaust and supply duct runs. That’s not just a comfort issue. It’s a fire hazard and a health code issue. Restaurant supply duct systems need Full System Cleaning on a different schedule than offices do, sometimes every 6 to 12 months depending on volume.
Our Commercial Duct Cleaning Process
We run negative-pressure extraction, which means the loosened debris goes straight into the vacuum, not back into your dining room or office floor. The equipment matters here. We use Rotobrush rotary brush systems to agitate caked-on debris, Nikro HEPA-rated vacuums to pull it out, and Abatement Technologies containment units to seal off work areas so dust doesn’t migrate into occupied spaces. Here’s the sequence on a typical commercial job in San Antonio:
- Site walk-through and system inspection. We map the duct layout, count registers and returns, check access points, and document the current condition with photos. You get a written quote after this walk-through, not a verbal guess.
- Containment setup. We seal supply and return openings, lay down floor protection, and set up Abatement Technologies containment units to create negative pressure in the work zone. This means air flows inward, not outward into finished spaces.
- System agitation. Our techs access the duct runs at strategic points and run Rotobrush rotary brush systems through the main trunks and branches. The rotating brushes knock loose the accumulated dust film, construction debris, and in commercial kitchens, the grease that has baked onto duct surfaces.
- HEPA extraction. A Nikro HEPA-rated vacuum unit pulls the loosened material out of the system and through HEPA filters. HEPA filtration captures 99.97% of particles down to 0.3 microns, which means what comes out of the vacuum exhaust is cleaner than the air in most San Antonio offices.
- Register, grille, and plenum cleaning. We remove, wash, and sanitize supply diffusers and return grilles. We also clean the supply and return plenums, which are the boxes where ducts connect to the air handler. Builders love to leave drywall scraps and soda cans in plenums. We see it constantly in new construction around Cibolo and Schertz.
- Photo documentation and walk-through. You get before-and-after photos of the duct interiors. We walk you through what we found and what we did, and we hand you a digital invoice payable by link before we leave.
For restaurants and medical facilities, we schedule the work overnight or on Sundays so you don’t close during business hours. San Antonio commercial kitchens around Alamo Heights and the Medical Center know us for showing up at 11:00 PM and being gone before the morning prep team arrives.
Commercial Duct Cleaning Pricing in San Antonio
Most standard commercial duct cleaning jobs in San Antonio run $900 to $3,200 for a typical space. Restaurants with grease-laden systems, medical buildings with stricter sanitation requirements, and large warehouses with extensive duct runs will come in higher. Here’s a breakdown by property type, based on what we quoted in the last twelve months across Bexar County:
- Small office or retail (under 3,000 sq ft): $900 to $1,600
- Mid-size office or medical suite (3,000 – 8,000 sq ft): $1,500 to $2,800
- Large office or retail (8,000 – 20,000 sq ft): $2,500 to $4,500
- Restaurant with grease buildup: $1,800 to $4,500 depending on kitchen exhaust integration and duct condition
- Warehouse or industrial: $2,000 to $6,000+ depending on duct length, height, and access difficulty
What moves the price in San Antonio? Ceiling height is the big one. Duct runs above 14 feet require lift equipment and slow the job down. Access matters too. Buildings in older parts of San Antonio, like Monte Vista or King William, often have tight mechanical rooms and limited roof access, which adds time. Grease in restaurant systems means heavier agitation and more passes with the Rotobrush. And if the Return Duct Cleaning reveals deteriorated liner or collapsed flex duct, that’s a repair conversation, not just a cleaning conversation.
Every quote is written and handed to you before work starts. That number does not move at the door. If the job reveals something unexpected mid-way, we stop, show you what we found, and get your sign-off on any change before we continue. That’s the Relay Standard, and it’s not optional for any Cardinal location.
Call (254) 347-3897 and we’ll walk your building, count your registers, and put a written number in your hand. Estimates are free.
FAQs – Commercial Duct Cleaning
How much does commercial duct cleaning cost in San Antonio?
Commercial duct cleaning in San Antonio typically costs $900 to $3,200 for most office and retail spaces, with restaurants and larger facilities running $1,800 to $6,000 depending on square footage, duct condition, and access difficulty. Call (254) 347-3897 for a written quote after a free site walk-through.
Can you clean commercial ducts without closing our business?
Yes. We schedule nights and weekends for restaurants, medical offices, and retail stores throughout San Antonio, from Downtown to Stone Oak to the Southside. The containment setup keeps work zones sealed so adjacent spaces stay fully operational. Tell us your hours and we’ll build the schedule around them.
How long does commercial duct cleaning take?
A 5,000 square foot office takes roughly 4 to 6 hours with a two-person crew. Larger facilities or systems with heavy grease or construction debris can take a full day or two. We map out the timeline during the walk-through and keep you updated through the live trackable arrival window on every booking.
Is commercial duct cleaning worth the cost?
In our experience, yes, for three measurable reasons: energy costs drop when airflow stops pushing through a dirty coil and clogged ducts, tenant and employee complaints about dust and stale air drop once the system is actually clean, and restaurant kitchens reduce fire and code risks when grease is pulled out of supply and exhaust runs. If the work isn’t right within 365 days, we return and correct it at no charge under the 365-Day Done Right Promise.
Do you clean kitchen exhaust ducts in San Antonio restaurants?
We clean supply and return duct runs in commercial kitchens, including grease-laden interior duct surfaces. That is not a substitute for a dedicated kitchen exhaust hood cleaning service if your inspector requires certified exhaust cleaning. We’ll tell you straight up what we cover and what needs a different specialist. Call (254) 347-3897 and we’ll walk your kitchen system with you.
Why San Antonio Businesses Call Cardinal Air Duct San Antonio
Commercial property managers don’t have time for vague quotes and no-show windows. They have tenants, health inspectors, and quarterly budgets. The Relay Standard exists because of people like you: a live arrival time you can track from your phone, before-and-after photos of the duct interiors we actually cleaned, and a digital invoice you can pay with a link before we pull out of the parking lot. No phone tag with a call center. A live person answers 24/7.
Omar Haddad runs Cardinal Air Duct San Antonio. Every tech who shows up at your building is background-checked, uniformed, and trained on professional-grade equipment: Rotobrush brush systems, Nikro HEPA vacuums, Abatement Technologies containment units. You’ll know the tech’s name before they arrive, and you’ll know exactly what they’re carrying.
We clean commercial ducts and offer Residential Duct Cleaning in every corner of San Antonio: Downtown office towers, medical suites in the Medical Center, restaurants in Alamo Heights and Southtown, retail strips along Bandera Road, warehouses off I-35 and Loop 410, schools in Northside ISD, and churches from Woodlawn Lake to Windcrest. The climate here is hard on HVAC systems. The ducts don’t clean themselves. We take care of it, on schedule, at a written price, with a full year of backing.
Call (254) 347-3897 for a free commercial duct cleaning estimate in San Antonio. We’ll walk the building, count the registers, and give you a number in writing before any work starts.
Written by Omar Haddad, Owner at Cardinal Air Duct San Antonio, serving San Antonio.