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.
Fast, Reliable Air Duct Cleaning Across League City
Air duct cleaning in League City costs between $395 and $780 for a full residential system, depending on home size and the number of duct runs. That’s the honest range you’ll see on a written quote from us before any work starts. If you’re smelling musty air every time the AC kicks on, or you’ve noticed dust piling up on registers within days of wiping them down, your ducts are telling you something. Our crews know League City’s housing stock well, from the 1990s subdivisions off South Shore Boulevard to older homes near the historic district on Main Street. Call (713) 936-5800 and we’ll schedule an inspection at a time that fits your day.
Why Hollis Air Duct Houston Is League City’s Preferred Air Duct Cleaning Company
People in League City choose us for one reason: we write the price down before the first tool comes off the truck, and that number doesn’t move. No per-vent math games. No “while we’re here” upsells. The quote you approve covers the whole system, edge to edge. Our techs arrive in uniform, background-checked, and inside the window we gave you on the phone. Roy Castellanos runs this crew, and he holds every job to The Garrison Standard: arrive when we said, price it in writing, clean it by the book, and leave the site better than we found it. That’s not sales language. That’s the operating code.
We also back every job with the 365-Day Done Right Promise. If the work fails within a year, we come back at no charge. That includes a free second visit, in writing, on every invoice. In a trade where guarantees are often a handshake, we’d rather put ours on paper.
Styles & brands we work with
Air Duct Inspection in League City
Air Duct Inspection in League City is the starting point when you can’t see what’s inside your system but you know something’s off. Given what Galveston Bay’s salt air does to metal registers and what humidity does to flexible duct runs, an inspection here has to look for more than dust. We run a camera through your supply and return lines and check for corrosion, separated joints, wet insulation, and microbial growth on interior surfaces.
A proper inspection in League City runs $149 to $249 depending on system size and whether we’re also checking the plenum and coil area. You’ll get still images or video from inside your ducts, not a verbal summary.
What the Camera Sees
Our video inspection shows you exactly what’s inside your ductwork: buildup on the walls, fiberglass shedding from inner liners, disconnected sections pulling attic air into the system. You see it, we point to it, and we explain what it means. If we find nothing wrong, we tell you that too and save you the cleaning cost.
When to Book One
Book an inspection if you’ve just bought a home in League City and want to know what the previous owners left inside the ducts. Also book one if you smell something musty only when the blower runs. That’s usually condensation or mold growth in the attic section of the run, and an inspection pinpoints it before you pay for anything else.
Residential Air Duct Cleaning in League City
Residential Air Duct Cleaning in League City is a full-system source removal job, not a quick vacuum at the registers. We use a Rotobrush rotary brush system with a Nikro negative-air machine running HEPA filtration while we work. The brush physically scrubs the inside walls of every accessible duct run. The negative air machine keeps the dust and debris contained and pulls it out of your home instead of recirculating it. For League City’s climate, this matters because ordinary cleaning methods leave the microbial film that humidity feeds.
Full residential cleaning in League City typically runs $395 to $780. Homes with two AC systems or extensive flexible ductwork fall on the higher end of that range. Before we touch anything, you’ll have a written quote covering the entire system.
Flexible Duct Care in Coastal Humidity
Many League City homes built in the 1990s and 2000s use flexible ducts in hot, vented attics. Humidity condenses on the inner liner, trapping dust and spores against a damp surface. Our brush speed and negative-air setup are calibrated to clean flex duct without tearing the inner liner. That’s the difference between a clean that lasts and one that sends you back to Google in three months.
Supply and Return Runs, Both
We clean supply and return lines completely in League City homes. The return side pulls in humid attic air through even small gaps, which is why we check joints and recommend resealing after cleaning. A supply-only clean leaves half the problem in place.
Trusted Brands We Service in League City
We maintain and clean systems built around Honeywell filtration media, Aprilaire whole-home units, and just about every central HVAC configuration you’ll find in League City’s housing stock. Our Rotobrush and Nikro gear handles metal trunks, flex runs, and mixed systems without switching crews or subcontracting. We stock common filter sizes, access panels, and sealing materials on the truck, so a standard full-system clean in League City doesn’t stall waiting on parts. If your system has a Guardsman UV or media filter, we’ll clean around it and tell you if the bulb or media looks done.
See the difference
Before
After
Before
After
Before
AfterCommon Air Duct Cleaning Problems We See in League City Homes
- White corrosion on registers and grilles: Salt air from Galveston Bay settles on metal surfaces and speeds up oxidation. We see this constantly in homes along South Shore Harbour and down toward Clear Creek. The fix is cleaning plus replacing badly corroded registers, not painting over them.
- Musty smell returning weeks after a “cheap clean”: A company brushes the first few feet of duct and calls it done. In League City’s humidity, the remaining biofilm in the rest of the run starts smelling again fast. A real clean gets the whole run, not just what’s visible from the vent.
- Condensation-soaked insulation in attic ductwork: Vented attics in League City get brutally hot and humid. When flexible ducts aren’t sealed properly, humid air meets cold supply air and soaks the insulation. We’ve pulled fiberglass insulation that dripped water. That’s a reseal job, not just a cleaning job.
- Mold growth inside return plenums: The return side draws air from the house through gaps in the plenum, pulling attic moisture with it. That moisture supports mold on the return duct walls. Source removal plus sealing the plenum is the only fix that holds in this climate.
Pricing for Air Duct Cleaning in League City, TX
Expect to pay $395 to $780 for a full residential air duct cleaning in League City. Smaller single-story homes with one system and short trunk lines sit near the low end. Larger two-story homes with dedicated supply and return runs in a vented attic land at the high end. An air duct inspection runs $149 to $249. If resealing duct joints is needed after cleaning, that’s quoted separately and agreed to before we start. No per-vent pricing. No bait-and-switch. The price we hand you covers the system as scoped, and if anything changes, we stop and tell you before moving forward. Call (713) 936-5800 for a free estimate on your League City home.
We Also Serve Cities Near League City
Our crews work throughout the Clear Lake area and the bay communities, including Webster, Seabrook, Alvin, and La Porte. If you’re in League City or any of those nearby towns, the same written-pricing rule and 365-Day Done Right Promise apply. Learn more about our Air Duct Cleaning services or see what we offer across League City.
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
Salt air near Galveston Bay accelerates corrosion on metal duct components like registers, grilles, and plenum seams, leaving a white powdery residue and pitting on the surface. In League City, that corrosion flakes off into the airstream and mixes with the dust already moving through your system. Cleaning removes both the particulates and the corroded surface layer, but replacement of badly damaged registers may be required. A camera inspection shows how much corrosion has actually built up in your runs.
The smell returns because the company that cleaned your ducts only brushed the first few feet of each run and left the microbial film intact further down. League City’s high indoor humidity from Galveston Bay moisture reactivates that film within weeks. Source removal cleans the full length of every accessible duct run, then we address the joints and insulation that let humid attic air into the system. Without the reseal step, the problem resets fast.
No. A fogging sanitizer without source removal will not solve a mold problem in League City ducts. Fog cannot penetrate the biofilm and debris that salt air and condensation help form on duct walls. The fog treats the air briefly; the mold stays anchored to the surface. Pay for mechanical source removal first. If a company sells you fogging instead of brushing, get another quote.
Yes. Flexible ducts in League City attics require a lower-brush-speed, controlled negative-pressure clean because the inner liner can tear if a rotary brush is run too aggressively. Metal ducts can take more direct scrubbing. Our Rotobrush system is adjusted for flex runs in the hot, humid attic conditions common to League City homes built from the 1990s forward. The wrong equipment on flex duct can damage the liner and force a full replacement.
League City’s humid subtropical climate means HVAC systems run nearly year-round and Galveston Bay moisture keeps indoor humidity higher than inland cities, so most homes here benefit from a full cleaning every 3 to 5 years. Homes with pets, recent renovations, or smokers in the house may need it sooner. If you’re noticing musty air when the blower runs, an inspection now beats waiting for the smell to worsen. Call (713) 936-5800 and we’ll give you an honest read on whether cleaning is worth it this year.
Written by Roy Castellanos, Owner at Hollis Air Duct Houston, serving League City and the Clear Lake area.