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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AfterFast, Reliable Air Duct Cleaning Across League City
Air duct cleaning in League City typically runs $350 – $650 for a full residential system and $800 – $2,400 for commercial jobs, with most homes scheduled within a few business days. We’re the local Air Duct Cleaning crew that serves League City from our Houston dispatch office, and we know the difference between a routine dust removal and the moisture-driven problems this city’s ground creates.
League City sits on some of the most flood-prone ground in the Houston metro, so the high water table and saturated soil push moisture up through slab penetrations and into duct systems even in subdivisions that were never officially “flooded.” We routinely camera-inspect duct interiors here and find water lines and mold growth in homes with no flood claim on record. That is not a scare tactic. It is what our technicians see when they pull the covers off supply boots in Clear Creek and Mar Bella and the older neighborhoods near Main Street. If you smell something musty when the AC kicks on, there is a reason, and it usually starts at the slab, not the register.
Our phones are answered by a live person 24 hours a day, 7 days a week. Call (361) 326-5060 and we will get you scheduled, price it in writing before we start, and back the work with our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is League City’s Preferred Air Duct Cleaning Company
We have been part of the Garrison Partners family since 2004, and our League City work is built on showing up inside the window, pricing before we touch anything, and leaving the site clean. The Garrison Standard is not a slogan. It is an operational code: written price, written guarantee, technician accountability.
Our crews are background-checked and uniformed. You know who is walking into your home before they arrive. We use Rotobrush rotary brush systems, Nikro negative-air machines, and HEPA filtration on every job, and we explain what each tool does while we are working. No jargon without translation.
The 365-Day Done Right Promise covers every job in writing. If the work fails within a year, we come back and make it right at no charge, including a free second visit. That is not standard in this trade. Most competitors offer a 30-day window or a verbal “satisfaction guaranteed” that evaporates when you call back.
We serve League City with local crews who understand the specific failure modes of Gulf Coast slab-on-grade construction. That matters more than a low teaser price when your ducts are growing mold at the boot.
Residential Air Duct Cleaning in League City
Residential Air Duct Cleaning in League City means source removal from your entire supply and return system, not just vacuuming the registers you can see. Most League City homes are slab-on-grade subdivisions built from the 1970s through the 2010s, with the largest wave in the 1990s and 2000s, and those systems are typically flex duct running through hot, humid attics. That ductwork traps moisture and dust in ways that inland Texas systems do not. Older homes in the historic League City area near Main Street have smaller, tighter duct runs that require a different approach than the wide-open flex systems in newer master-planned communities.
A typical residential cleaning in League City runs $350 – $650 for a full system, depending on the number of supply and return runs, whether we find standing water or mold requiring remediation, and whether duct sealing is needed after source removal. We write the price down before we start. It does not move at the door.
What Source Removal Actually Means
Source removal is the trade term for dislodging and extracting the contaminants that are in your ducts, not just moving them around. We use a Rotobrush rotary brush system to whip debris off duct walls, coupled with negative-air containment so nothing escapes into your living space. HEPA filtration on the vacuum captures particles down to 0.3 microns. After source removal, we camera-inspect to verify the runs are clean and intact.
When Sealing Is the Real Fix
We pulled the flex runs off a 1990s slab-on-grade house near Main Street in the historic League City area, and the return duct had a crushed section buried under blown insulation plus a disconnected collar at the air handler that had been dumping attic air into the system for years. After source removal and negative pressure containment, a Rotobrush whip through the runs and HEPA filtration on the vac, we sealed the damaged collars with mastic and reattached the run, and the static pressure at the registers finally dropped where the homeowner’s cooling complaint started. The clean was step one. Duct Sealing in League City was what fixed the problem.
Commercial Air Duct Cleaning in League City
Commercial Air Duct Cleaning in League City covers office buildings, retail spaces, medical clinics, and multi-tenant properties from the Bay Area Boulevard corridor to the developments along Interstate 45. These systems are larger, often run on rooftop units with longer duct runs, and serve more occupants who notice air quality problems quickly. A typical commercial cleaning in League City runs $800 – $2,400 depending on system size, access difficulty, and whether we are working after hours to avoid disrupting business.
We use Nikro negative-air machines on commercial jobs to maintain pressure containment across longer duct networks, and we document before-and-after conditions with video inspection. Property managers in League City use that documentation for tenant records and insurance compliance.
After-Hours and Phased Scheduling
Commercial properties often cannot shut down during business hours. We schedule League City commercial work for evenings and weekends, phased by zone so your operation keeps running. The price is written before we start, same as residential, and the 365-Day Done Right Promise applies to commercial work too.
Video Documentation for Compliance
We record video inspection footage of your commercial duct system before and after cleaning. League City property managers use this for lease compliance, insurance documentation, and maintenance records. You see what we saw, and what we removed.
Trusted Brands We Service in League City
We clean and service ductwork connected to all major HVAC brands, and we stock filtration products from Honeywell, Aprilaire, and Guardsman for League City customers who want to upgrade after a cleaning. Our equipment roster includes Rotobrush rotary brush systems for source removal and Abatement Technologies HEPA filtration for containment. These are the same tools commercial crews use, not hardware-store gear. If your League City home needs a filtration upgrade after we find mold or heavy debris, we can install Aprilaire media filters or Guardsman UV systems with the same visit, priced in writing before we start.
Common Air Duct Cleaning Problems We See in League City Homes
- Moisture wicking through slab penetrations. Homes here are slab-on-grade, so saturated soil and a high water table wick moisture up through slab penetrations into the duct system. Crews that only vacuum the visible runs miss mold colonization starting at the boot and plenum, and the problem returns within a season.
- Flex duct sagging and tearing at collars. Flex duct in 1990s – 2000s-era attics sags, kinks, and tears at the collar because of long May – September cooling cycles pushing moist Gulf air through it. A clean without a camera inspection and collar sealing just re-dirties a leaking system.
- Crushed or disconnected runs hidden in insulation. After heavy rain events, moisture intrudes at disconnected or crushed runs in neighborhoods that never officially flooded. A standard one-visit clean without re-checking supply and return ducts for standing water leaves the homeowner thinking the musty smell was handled when it was not.
- Decades of accumulation in older Main Street area homes. Older homes near Main Street have original metal duct or early flex that has never been cleaned, with layers of dust, pollen, and occasional rodent debris that restrict airflow and strain the HVAC system.
Pricing for Air Duct Cleaning in League City, TX
Here is what air duct cleaning costs in League City’s market, based on the jobs we have priced and completed here:
| Service | Typical Range |
|---|---|
| Residential full system cleaning (supply + return) | $350 – $650 |
| Residential with mold remediation or standing water | $600 – $1,200 |
| Duct sealing with mastic after cleaning | $200 – $500 additional |
| Commercial system cleaning | $800 – $2,400 |
| Video inspection only (no cleaning) | $150 – $250 |
What moves the price: number of supply and return runs, whether we find mold or moisture requiring remediation, accessibility of the air handler and ductwork, and whether sealing or repairs are needed after source removal. We do not quote per-vent pricing. That is a bait-and-switch setup. We price the whole system, write it down, and that is what you pay. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near League City
Our crews work throughout the south Houston metro, including Air Duct Cleaning in League City and neighboring Webster, Kemah, Dickinson, and Friendswood. Same standards, same written pricing, same 365-Day Done Right Promise in every community we serve.
Serving League City, TX - Our Local Coverage Area
We’re based in the League City area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning in League City
The high water table and saturated soil in League City push moisture up through slab penetrations into your duct system even if your street never saw standing water. We find water lines and active mold growth in duct boots and plenums in homes with no flood claim on record. The fix is not air freshener. It is source removal, drying, and sealing the penetration points. Call (361) 326-5060 for a camera inspection.
Yes. Older homes near Main Street have smaller, tighter duct runs, often original metal or early flex, that require careful rotary brush sizing and manual access. Newer subdivisions like Mar Bella or Clear Creek have wide-open flex systems in vented attics that allow negative-air containment but sag and tear at collars. We adjust the tool selection and inspection focus based on what your home’s era built. Call (361) 326-5060 and we will walk through what your system likely needs.
Source removal means we dislodge and extract the actual contamination from your duct walls, not just vacuum the floor of the trunk line. In League City, that contamination is often mold and moisture-bonded dust, not just dry pollen. We use a Rotobrush rotary whip to break it loose, negative-air containment to prevent escape, and HEPA filtration to capture it. Call (361) 326-5060 and we will show you the before-and-after video from your own system.
Yes. Post-flood duct cleaning in League City requires moisture detection at every supply and return boot, mold assessment, and often antimicrobial treatment after source removal. Routine cleaning assumes dry ducts. After a major rain event or any history of moisture intrusion, we treat the system as potentially compromised until inspection proves otherwise. Call (361) 326-5060 to discuss whether your home needs the post-flood protocol.
Visible dust at registers, musty odors when the AC cycles, uneven airflow room to room, or a recent renovation that generated construction dust are all indicators. In League City specifically, any musty smell after rain warrants a camera inspection because of our moisture-prone ground. We offer free estimates and will show you video of your own ducts before you decide. Call (361) 326-5060 to schedule.
Ready to get your League City home’s ductwork inspected and priced in writing? Call Hollis Air Duct Cleaning at (361) 326-5060. We will answer live, schedule you within the week, and show up uniformed, background-checked, and ready to explain what we find before we start any work. Every job gets our 365-Day Done Right Promise in writing. If it is not done right, we make it right. No exceptions.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving League City and the greater Houston metro since 2004.