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.
Fast, Reliable Duct Sealing Across Crowley
Duct sealing in Crowley typically runs $400 – $900 for a whole-home seal depending on system size and accessibility, and most jobs are scheduled within a few business days with a written price locked before we start. If your upstairs rooms won’t hold temperature or your energy bills spike every July, you’re probably losing conditioned air through gaps you can’t see.
We know Crowley’s housing stock because we’ve worked in it. From the 1980s subdivisions near Crowley High School to the two-story tract homes in Coventry and Windmill Farms, our crews drive these streets regularly. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office, but the technicians who show up at your door in Crowley are the same background-checked, uniformed crew members who’ve been sealing ducts in Johnson and Tarrant counties for years. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Crowley’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and that track record matters in a trade where half the competitors from a decade ago are already gone. Crowley homeowners aren’t looking for the lowest teaser price; they’re looking for a crew that shows up inside the window, prices the job in writing, and doesn’t invent new charges once the van is in the driveway.
Our 365-Day Done Right Promise covers every duct sealing job in writing: if the seal fails or the problem returns within a year, we come back and make it right at no charge, including a free second visit. No negotiation, no runaround. Our technicians arrive uniformed and background-checked, per The Garrison Code, and we use professional-grade equipment from Rotobrush and Nikro – the same negative-air machines and rotary brush systems commercial crews rely on, not hardware-store gear.
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 when your AC is dumping attic air into the living room.
Duct Insulation in Crowley
Duct Insulation in Crowley addresses a problem our crews see constantly in this market: attic ductwork that bleeds thermal energy into 140-degree roof cavities all summer long. In Crowley’s climate, where HVAC systems run almost constantly from May to September, poorly insulated ducts can lose 20 – 30% of their cooling capacity before the air ever reaches your vents. The job involves wrapping accessible supply and return runs with formaldehyde-free insulation, sealing the vapor barrier at every joint, and verifying that the R-value matches what North Texas attics demand.
A typical duct insulation job in Crowley runs $500 – $1,200 depending on linear footage and whether we’re working in a tight 1980s attic or a more accessible two-story chase.
When Insulation Beats Sealing Alone
Some Crowley homes, especially the older ranch-style builds near Crowley High School, have ducts that are structurally sound but thermally naked. The metal or fiberglass board isn’t leaking, but it’s sweating in July and cooking in August. In those cases, wrapping the trunk and branches delivers more comfort per dollar than chasing phantom air leaks.
Attic Conditions in Crowley
Crowley’s combination of high summer humidity and intense roof-cavity heat means insulation vapor barriers fail faster here than in drier climates. We inspect for condensation damage and mold staining before wrapping anything new. Sealing over a wet, contaminated surface traps the problem rather than fixing it.
HVAC Duct Sealing in Crowley
HVAC Duct Sealing in Crowley is the core fix for the disconnected joints, crushed flex runs, and plenum separations we find in local attics. The work starts with a camera inspection of the supply and return systems, followed by mechanical reconnection of separated runs, mastic application at every joint and boot, and static-pressure verification before we leave. We seal per NADCA standards, not with foil tape that peels off in three summers.
Whole-system HVAC duct sealing in Crowley typically costs $400 – $900 for single-story homes and $700 – $1,400 for two-story systems with longer attic runs.
Flex Duct Failures in 1990s – 2000s Homes
In subdivisions like Coventry and Windmill Farms, the flexible duct installed during the construction boom is now 20 – 30 years old. We’ve found sagging runs that pool condensation, kinks that choke airflow to entire wings of the house, and takeoff collars that have separated completely, dumping conditioned air into the attic. Our crew reconnects these properly, supports the runs to prevent future sagging, and seals the connection with mastic rated for the temperature swings Crowley attics see.
Fiberglass Duct Board in 1980s Builds
Here’s where Crowley’s housing era really matters. In the older subdivisions near Crowley High School, original duct systems were often built with fiberglass duct board that breaks down over decades and sheds glass fibers into the airstream, a failure mode that’s largely absent in the flexible-duct tract homes of Coventry and Windmill Farms. That means sealing work here often starts with confirming whether the duct board itself is still intact before chasing joint leaks. If the board is delaminating, sealing the joints is pointless; the duct itself needs replacement.
Trusted Brands We Service in Crowley
We stock parts and materials from Abatement Technologies, Guardsman, and Rotobrush so Crowley customers aren’t waiting on a Dallas warehouse to ship mastic or replacement collars. Our vans carry NADCA-rated duct sealant, mechanical fasteners for flex duct reconnections, and insulation rated for the temperature extremes of North Texas attics. That local inventory means most Crowley jobs are completed in a single visit, not stretched across two appointments because a part had to be ordered.
Common Duct Sealing Problems We See in Crowley Homes
- Disconnected joints in Windmill Farms two-stories. We got a call from a two-story in Windmill Farms where the upstairs bedrooms never matched the thermostat and the return was pulling attic dust. Our tech ran a camera inspection down the supply and return ducts and found a crushed flex run pinched behind the air handler platform plus three disconnected joints at the trunk. We reconnected the runs, sealed the plenum and boots per NADCA standards, then verified static pressure before we left – the upstairs rooms finally held temp within a degree.
- Fiberglass duct board delamination near Crowley High School. In Crowley’s older 1980s subdivisions, original ductwork often includes fiberglass duct board that deteriorates over time, releasing glass fibers into the air. Crews that only tape visible joints miss the actual source of contamination entirely.
- Mold-colonized plenums from summer humidity. High summer humidity in Crowley lets mold colonize the plenum and interior duct liner. Sealing over a wet, contaminated surface traps the problem rather than fixing it. We inspect first, remediate if needed, then seal.
- Sagging flex duct in Coventry attic runs. Flex duct in 1990s – 2000s attic runs sags, kinks, and separates at takeoffs after 20+ years of May-to-September runtime, dumping conditioned air into the attic instead of the room. Proper support and reconnection fixes it for the long haul.
Pricing for Duct Sealing in Crowley, TX
We’re upfront about this because the duct cleaning trade has a bait-and-switch reputation, and Crowley homeowners deserve better than a $99 coupon that becomes a $900 invoice.
| Service | Typical Range in Crowley |
|---|---|
| Single-story whole-system duct sealing | $400 – $900 |
| Two-story whole-system duct sealing | $700 – $1,400 |
| Duct insulation (wrap and vapor seal) | $500 – $1,200 |
| Partial seal / spot repair (1 – 2 disconnected runs) | $250 – $500 |
| Camera inspection with written report | $150 – $250 (credited toward work if hired) |
What moves the price: accessibility of your attic, linear footage of ductwork, whether we’re working around stored items or a finished ceiling, and whether we find deteriorated duct board that needs replacement rather than sealing. 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. Call (361) 326-5060 for an exact quote – estimates are free.
We Also Serve Cities Near Crowley
Our Duct Sealing crews work throughout the southern Tarrant and northern Johnson county area, including Burleson, Joshua, Kennedale, and Arlington. If you’re searching for Duct Sealing in Crowley or nearby, we cover your area with the same written pricing and 365-Day Done Right Promise.
Serving Crowley, TX - Our Local Coverage Area
We’re based in the Crowley 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 Crowley
The fiberglass duct board used in 1980s Crowley subdivisions delaminates over time, trapping moisture and harboring mold inside the board itself. A standard duct cleaning scrubs the interior surfaces but doesn’t rebuild failing duct board. We inspect with a camera to confirm whether the material is intact; if it’s breaking down, sealing or replacement of the affected sections is the real fix. Call (361) 326-5060 and we’ll diagnose it properly.
Dirty ducts distribute dust evenly; leaking ducts create temperature imbalances and dust streaks around ceiling vents. If your upstairs bedrooms in Windmill Farms won’t hold temperature, or you feel attic-temperature air blowing when the AC cycles, you’ve got separation or crush damage in the flex runs. We verify with a camera inspection and static pressure test before quoting any sealing work.
Yes, but only if the sealing addresses the right leaks. In Crowley’s climate, disconnected return ducts in the attic pull in humid outdoor air that the AC then struggles to dehumidify. Sealing those return-side leaks reduces the humidity load your system fights. We measure static pressure and airflow before and after to confirm the improvement. Call (361) 326-5060 for a free estimate.
Boot sealing only addresses the connection between the duct and your ceiling vent, which is rarely the main leak in a Coventry two-story. Whole-system sealing includes the trunk line, branch takeoffs, plenum connections, and the air handler cabinet – the points where we typically find the disconnected joints and crushed runs that waste energy. We quote whole-system work because partial fixes leave the real problems untouched.
We seal the air handler cabinet, plenum, and all accessible ductwork as part of a complete seal. The blower motor itself isn’t sealed – it needs clearance to operate – but the cabinet that houses it often leaks at panel seams and filter slots, especially in systems that have been opened repeatedly for maintenance. We mastic-seal those cabinet gaps per NADCA standards.
Ready to stop losing conditioned air to your attic? Call (361) 326-5060 for a free written estimate on duct sealing in Crowley. We’ll inspect your system with a camera, explain what we find in plain terms, and give you one flat price before any work begins – backed by our 365-Day Done Right Promise in writing.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Crowley since 2004.




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