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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After
Before
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Before
AfterFast, Reliable Duct Sealing Across Forney
Duct sealing in Forney typically runs $350 – $850 for a whole-house seal on a standard single-family home, and most jobs are scheduled within a few days with a written price locked in before we start. If your bedroom never gets cool, your utility bill keeps climbing, or you feel hot attic air blowing from the vents, the problem is usually gaps at the plenum, crushed flex runs, or disconnected boots in the attic, not a dirty duct.
We’re the Duct Sealing crew for Hollis Air Duct Cleaning, dispatching from our Dallas-Fort Worth office to serve Forney directly. We know the subdivisions off FM 548, the master-planned communities near Windmill Farms, and the newer builds around the Gateway development. Our technicians carry mastic, metal-backed tape, and mechanical fasteners rated for Forney’s 140°F+ summer attic conditions. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Forney’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our 365-Day Done Right Promise applies to every Forney job in writing. If a seal fails or a connection loosens within a year, we come back at no charge, including a free second visit.
Our technicians are background-checked and uniformed. You’ll know who’s arriving before they walk in. They show up inside the quoted window, price the work in writing before touching anything, and leave the site clean. That’s The Garrison Standard.
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.
We use professional-grade equipment from Nikro, Honeywell, and Aprilaire, the same tools commercial crews rely on, and we explain what we’re doing in plain terms while we work.
Duct Sealing Services in Forney
Duct Sealing Services in Forney focus on closing the gaps, leaks, and disconnected joints that let conditioned air escape into your attic instead of reaching your rooms. In a market where most housing was built after 2000, the problem is rarely decades of corrosion. It’s builder-grade flex duct pinched during installation, boots popped loose from the register, or mastic missing at the plenum. We seal with UL-181 rated mastic and metal-backed tape, then pressure-test to verify the fix. A typical whole-house duct sealing job in Forney runs $350 – $850 depending on system size and accessibility.
Supply Duct Sealing and Boot Reconnection
Supply ducts carry cooled air from your handler to the rooms. In Forney’s ventilated attics, we regularly find flex runs crushed flat between trusses or boots that were never fully connected at the register. We reshape or replace damaged flex, reconnect boots with mechanical fasteners, and seal every joint with mastic rated for North Texas temperature swings.
Return Air Chase Sealing
Return ducts pull air back to the handler for reconditioning. When these chases leak, they suck hot attic air and pollen straight into your system. We seal the return plenum, filter rack, and chase connections, then verify with a smoke pencil or pressure test so you’re not paying to cool 140°F attic air.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Duct Insulation in Forney
Duct Insulation in Forney addresses the heat gain that happens after sealing is complete. Even a perfectly sealed flex duct will bleed cooling if the insulation jacket is thin, torn, or compressed. Forney’s summer attic temperatures routinely exceed 140°F, and builder-grade R-4 or R-6 flex simply isn’t enough for that environment. We wrap or replace with higher-R insulation where accessible, focusing on long attic runs and plenums. A typical duct insulation job in Forney runs $400 – $950 for a whole system, depending on linear footage and whether we’re adding to existing flex or replacing degraded jacketing.
Attic Flex Insulation Upgrades
Long flex runs in Forney’s hot attics lose capacity fast. We add insulation sleeves or replace degraded flex with higher-R product from Honeywell and Aprilaire, secured so it won’t sag or compress. The goal is delivered air temperature within 2 – 3 degrees of what left the handler.
Plenum and Handler Wrap
The plenum and air handler cabinet are metal surfaces that radiate heat into conditioned air. We wrap these with foil-faced insulation and seal the seams, reducing the thermal load your compressor has to overcome. In Forney’s heavy summer runtime, that shows up on your bill.
Trusted Brands We Service in Forney
We stock parts and materials from Nikro, Honeywell, Aprilaire, and Abatement Technologies, so most Forney jobs don’t wait on shipping. Our Nikro negative-air machines verify seal integrity after the work. Honeywell and Aprilaire filtration products integrate with sealed systems to maintain pressure balance. We don’t show up hoping we have what you need. We arrive with the right materials for post-2000 flex duct systems, which is what most of Forney’s housing stock requires.
Common Duct Sealing Problems We See in Forney Homes
- Crushed flex duct in ventilated attics. Builder crews working fast in Forney’s boom years often wedged flex runs between trusses or over joists where they flattened under their own weight or foot traffic. The duct isn’t torn, so it doesn’t leak by the standard definition, but the airflow is throttled to a trickle. We reshape or replace and secure with proper support straps.
- Disconnected boots at ceiling registers. The connection between flex duct and register boot is often taped and forgotten. In Forney’s temperature-cycling attics, that tape dries and releases. We reconnect with mechanical fasteners and seal with mastic, not just tape.
- Missing mastic at the air handler plenum. The plenum is where all air enters or exits the handler. Builder-grade installations often skip mastic here, relying on tape alone. Under Forney’s heavy summer AC load, that tape fails and leaks ride the pressure differential. We strip old tape, clean the surface, and apply fresh mastic rated for the application.
- Undersized return chases pulling attic air. In newer Forney homes with open floor plans, return air paths are sometimes inadequate. The system compensates by pulling through gaps in the chase, sucking hot attic air and cedar pollen with it. We seal the chase and evaluate whether the return path needs expansion.
Pricing for Duct Sealing in Forney, TX
A typical whole-house duct sealing job in Forney runs $350 – $850. Duct insulation runs $400 – $950. What moves you within that range is system size (single-zone versus multi-zone), attic accessibility (walkable truss versus tight crawl), and how much damaged flex needs replacement versus simple reconnection and sealing.
We don’t quote per-vent or per-linear-foot teaser prices that balloon once we’re inside. We inspect, write the full price down, and get your approval before any work starts. The price does not move at the door. Estimates are free. Call (361) 326-5060.
Our 365-Day Done Right Promise covers every seal and connection. If it fails, we return and make it right at no charge, including a free second visit. That’s written on every job, not implied.
We Also Serve Cities Near Forney
Our crews also handle Duct Sealing in Forney and surrounding areas including Sunnyvale, Mesquite, Seagoville, and Balch Springs. Each community gets the same written price, the same 365-Day Done Right Promise, and the same background-checked, uniformed technicians.
Serving Forney, TX - Our Local Coverage Area
We’re based in the Forney 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 Forney
Builder crews work fast and mastic is messy, so it’s often skipped or applied thin. In Forney’s post-2000 subdivisions, we regularly find boots disconnected at the register, flex pinched between trusses, and plenum joints sealed only with tape that’s already failing. Your ducts aren’t old; they were never fully sealed to begin with. Call (361) 326-5060 and we’ll show you exactly what’s happening in your attic.
Duct cleaning removes debris from inside the duct; duct sealing closes the gaps that let air escape into the attic or pull attic air into the system. A clean duct with a 15% leak rate still wastes energy and lets pollen in. Sealing fixes the pressure boundary. We often recommend both, but they’re separate jobs with separate purposes. For a written quote on either, call (361) 326-5060.
Signs include a room that never matches the thermostat, weak airflow from one register, dust blowing from vents when the system starts, or utility bills that climbed without rate increases. We use a camera scope to verify without tearing into drywall. In Forney’s Windmill Farms and similar subdivisions, we find crushed flex or disconnected boots in roughly one of every three homes built since 2010. Call (361) 326-5060 for a camera inspection.
Yes. We follow NADCA guidelines for assessment, access, and verification, including post-seal pressure testing where appropriate. For warranty-sensitive Forney homeowners, we document the before condition, the work performed, and the test results in writing. That documentation satisfies most builder warranty disputes and all of our own 365-Day Done Right Promise requirements. Call (361) 326-5060 to schedule.
Forney’s housing stock is overwhelmingly post-2000 with flexible duct in ventilated attics, while older suburbs like parts of Mesquite or Balch Springs have galvanized hard pipe or slab duct that fails differently. In Forney, the enemy is installation debris and rushed construction, not decades of corrosion. Our crews carry different materials and use different inspection techniques because the failure modes are different. That’s why local experience matters. Call (361) 326-5060 for a crew that knows the difference.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Forney since 2004 as part of the Garrison Partners family.