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 Duct Sealing Across Iowa Colony
We dispatch crews to Iowa Colony from our Dallas-Fort Worth coordination office, and most Iowa Colony appointments book within a few business days. If you’re in Sedona Lakes, Meridiana, or anywhere along County Road 65, we know the route and we know what your ductwork looks like before we pull into the driveway. Call (361) 326-5060 for a free estimate.
Iowa Colony’s explosion of post-2000 subdivision homes built on former rice fields creates a specific kind of duct problem that inland Texas crews rarely see. The heavy clay soil shrinks in August and swells after spring rains, and that slab movement works gaps open at duct collars and register boots even in houses that are barely fifteen years old. We’ve sealed ducts in brand-new Iowa Colony builds that leaked worse than 1970s ranch houses in drier parts of the state. That’s not a guess. We’ve measured it with a duct blaster and photographed the gaps.
Our Duct Sealing team works under The Garrison Standard: written price before any tool comes out, background-checked uniformed technicians, and a 365-Day Done Right Promise backed in writing on every job. If the seal fails within a year, we return and make it right at no charge, including a free second visit.
Why Hollis Air Duct Cleaning Is Iowa Colony’s Preferred Duct Sealing Company
Hollis has been in business since 2004 as part of the Garrison Partners family, and our Iowa Colony reputation is built on showing up inside the quoted window and leaving the site clean. We don’t compete on the lowest teaser price. We compete on the price that doesn’t move once the technician is inside your home.
Our crews serve Iowa Colony with the same equipment commercial contractors use: Rotobrush rotary brush systems, Nikro negative-air machines, and sealing products from Honeywell, Aprilaire, and Abatement Technologies. These aren’t hardware-store tools, and we explain what each one does while we’re working.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule. Roy Castellanos leads this operation, and The Garrison Code governs how every technician behaves on your property: arrive squared away, price in writing, work by the book, leave it cleaner than you found it.
Duct Repair in Iowa Colony
Duct Repair in Iowa Colony usually means fixing disconnected flex runs, replacing rodent-damaged boots, or re-supporting sagging lines in 130-degree attics. Because nearly all local housing is post-2000 slab-on-grade construction with flex duct in unconditioned attics, the failures we see are different from older markets with rigid metal duct. A typical Duct Repair in Iowa Colony runs $280 – $580 depending on accessibility and whether we’re replacing a short section or rebuilding a plenum connection.
Disconnected Flex Runs at the Plenum
The vibration of a running air handler slowly works flex duct loose from the plenum collar, especially in homes where the original installer used zip ties instead of proper clamps. We find this constantly in Iowa Colony’s two-story brick-veneer homes, where the air handler sits in a closet upstairs and the flex drops through a chase into the attic. Camera inspection shows the gap in about thirty seconds. We re-secure with mechanical fasteners and seal with mastic and mesh, not foil tape that cooks off in summer attic heat.
Rodent Damage in Attic Ductwork
Every fall, when rice harvest pushes field mice out of the surrounding farmland and into new Iowa Colony subdivisions, we see chewed boots and torn flex. The damage isn’t always visible from the register. We run a camera to find it, then replace the damaged section and seal the entry points with metal flashing where the duct penetrates the ceiling. A patch without sealing the access route means you’ll call us again next October.
Air Duct Sealing in Iowa Colony
Air Duct Sealing in Iowa Colony is the process of closing every leak path in your supply and return ductwork so conditioned air reaches the rooms it’s supposed to reach, and humid attic air stays out of the system. Because Iowa Colony homes run air conditioning roughly nine months a year, even small leaks pull massive amounts of humid Gulf air into the ducts, which shows up as musty smells, uneven cooling, and energy bills that climb every summer. A whole-system Air Duct Sealing in Iowa Colony typically runs $1,400 – $2,800 for an average 2,000-square-foot home, depending on duct layout and how many plenum gaps we find.
Pressure Testing Before and After
We don’t guess. We measure duct leakage with a duct blaster before we start and again after we finish, so you see the number in writing. A typical Iowa Colony home before sealing leaks 25 – 35 percent of its conditioned air into the attic. After proper sealing with mastic and mesh on every collar, boot, and joint, that number should drop below 10 percent. We show you both readings on the invoice.
Sealing What Actually Leaks
Some crews tape the obvious joints and call it done. We seal the register boots where they meet drywall, the plenum gaps where the air handler connects to the trunk line, and the return chase leaks that pull attic air directly into your filter grille. In Iowa Colony’s humid climate, missing any of these paths means the musty smell comes back within weeks because the humid air source was never closed off.
Trusted Brands We Service in Iowa Colony
We stock parts and sealing materials from Nikro, Honeywell, Aprilaire, and Abatement Technologies, which means most Iowa Colony jobs don’t wait on a parts run to Houston. Nikro negative-air machines let us maintain proper containment while we work in your attic. Honeywell and Aprilaire filtration products integrate with sealed duct systems to keep particulates out once the leaks are closed. Abatement Technologies supplies the mastic and mesh we use on every collar and boot. When a Sedona Lakes homeowner needs a seal completed before a weekend houseful of guests arrives, having the right material on the truck matters.
Common Duct Sealing Problems We See in Iowa Colony Homes
- Mastic applied over dusty flex duct without source removal. The seal fails within one cooling season because mastic won’t bond to a dusty surface, and nobody wiped the collar first. We clean every surface with a vacuum and solvent wipe before the mastic goes on.
- Supply and return ducts sealed while register boots and plenum gaps stay open. The attic runs keep pulling humid Gulf air into the system, so the musty smell returns and the energy savings never materialize. We seal the entire pressure boundary, not just the easy-to-reach joints.
- Fogging a “sanitiser” into ductwork instead of sealing leak paths. The moisture and microbial growth come back because the humid air source was never closed off. Fogging treats symptoms. Sealing treats the cause. In Iowa Colony’s nine-month cooling season, only one of those approaches lasts.
- Slab movement from shrink-swell clay reopening sealed collars. We see this in Meridiana homes built in 2018 and 2019, where the foundation shifted enough to crack caulk and work gaps into what looked like a tight seal. Our repair includes flexible mesh reinforcement at stress points, not just a bead of mastic that tears when the slab moves.
Pricing for Duct Sealing in Iowa Colony, TX
Whole-system duct sealing in Iowa Colony runs $1,400 – $2,800 for most single-family homes between 1,800 and 3,000 square feet. Smaller homes or partial sealing of a specific zone starts around $650. Duct repair for disconnected runs or rodent damage typically falls between $280 – $580. What moves the price: attic accessibility (crawl-in versus walk-in), number of supply and return branches, whether we need to replace damaged flex sections before sealing, and how many plenum or chase gaps we find during the pressure test.
We give you one flat price per system, agreed in writing before any work starts. No per-vent pricing. No add-ons at the door. The price on the invoice matches the price on the estimate. Call (361) 326-5060 for an exact quote – estimates are free, and we bring a camera so you see what we see.
We Also Serve Cities Near Iowa Colony
Our crews work throughout the metro area, including Houston, San Antonio, Dallas, and Fort Worth. Scheduling and dispatch are coordinated from our Dallas-Fort Worth office, with local technicians serving each market under The Garrison Standard.
Serving Iowa Colony, TX - Our Local Coverage Area
We’re based in the Iowa Colony 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 Duct Sealing in Iowa Colony
Because Iowa Colony’s heavy clay soil shrinks and swells seasonally, slab movement works gaps open at duct collars and register boots even in newer homes. We’ve pressure-tested 2018 builds in Meridiana that leaked 30 percent of conditioned air into the attic. The age of the house matters less than the soil it sits on. Call (361) 326-5060 for a free duct blaster test.
No. Fogging masks the smell temporarily but does not close the leak paths that pull humid attic air into the system. In Iowa Colony’s Gulf Coast climate, the moisture and microbial growth return within weeks because the source was never sealed. We fix the cause with pressure-tested duct sealing, not chemical cover-ups. Call (361) 326-5060 for an inspection that shows you the actual leak locations.
Field mice move out of surrounding rice fields and into new subdivisions when harvest begins in October. Iowa Colony’s rapid growth has pushed housing directly against former agricultural land, so the migration pattern is predictable. We see chewed boots and torn flex most often in Sedona Lakes and along County Road 65. We repair the damage and seal entry points with metal flashing. Call (361) 326-5060 before the fall migration starts.
Real duct sealing starts with a pressure test to measure leakage, then source removal and surface prep so mastic bonds properly, then sealing of every collar, boot, plenum gap, and return chase leak, then a second pressure test to prove the result. Taping joints alone misses the boots and plenums that leak most in Iowa Colony homes, and foil tape fails in 130-degree attics within a year. Call (361) 326-5060 for a job measured in CFM, not guesswork.
Seal first if the flex is intact but leaky at connections. Replace sections that are crushed, kinked, or rodent-damaged, then seal the new connections. In Iowa Colony’s humid attics, old flex that has absorbed moisture often sags and restricts airflow – replacement makes more sense than sealing something that won’t hold its shape. We camera-inspect and tell you which path saves money long-term. Call (361) 326-5060 for a written recommendation.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Iowa Colony since 2004.