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.
Before
After
Before
After
Before
AfterFast, Reliable Duct Sealing Across Seagoville
We dispatch our Duct Sealing crews to Seagoville from our Dallas-Fort Worth coordination office, and we know the roads well enough to hit most Seagoville addresses inside our quoted arrival window. If you live off Highway 175, near the historic downtown, or in the newer developments toward the eastern edge of town, we’ve probably already worked on a house with ductwork a lot like yours. Call us at (361) 326-5060 and we’ll get you a written price before any work starts.
Why Hollis Air Duct Cleaning Is Seagoville’s Preferred Duct Sealing Company
We’ve been sealing ducts in Seagoville since long enough to know which neighborhoods have original sheet-metal runs and which have the retrofitted flex lines that came with later central-air conversions. Our crews carry mastic, mesh, and mechanical fasteners sized for both. Homeowners in Seagoville tell us they chose us because we show up uniformed, background-checked, and ready to explain what we find before we fix it. Our phones are answered by a live person 24 hours a day, 7 days a week, so you’re not waiting through a callback queue when your AC is blowing attic air into your living room. Every repair we make in Seagoville is backed by our 365-Day Done Right Promise: if the seal fails within a year, we come back and make it right at no charge, including a free second visit.
Air Duct Sealing in Seagoville
Air Duct Sealing in Seagoville means finding where conditioned air is leaking out of your system and sealing those points with materials that last. In this market, the job is less about routine maintenance and more about correcting problems built into the housing stock: disconnected joints behind air handlers, crushed flex runs in manufactured homes, and leaky connections where old floor-furnace ductwork was adapted for central air. A typical Air Duct Sealing job in Seagoville runs $350 – $850 for a single system, depending on how much of the ductwork we can access and how many repairs are needed. We price by the system, not by the vent, and we write the number down before we start.
What We Find in Older Seagoville Homes
In neighborhoods near the historic downtown, we regularly encounter homes that started with floor furnaces and got retrofitted for central air decades later. That leaves undersized returns, dead-end branches, and joints that were never designed to handle forced-air pressure. We use camera inspection to locate these hidden problems before we quote, so you’re not paying for a surface seal while air continues to leak inside your walls.
Manufactured Home Duct Sealing
Seagoville has a significant number of manufactured homes with flexible duct runs that crush easily and separate at the collars. Tape won’t hold here, not with North Texas humidity and the temperature swings these systems see. We use mastic and mechanical fasteners rated for flex duct, and we check static pressure after sealing to make sure your blower motor isn’t working harder than it should.
Duct Sealing Services in Seagoville
Duct Sealing Services in Seagoville cover the full range of what it takes to make your ductwork hold air: inspection with camera and pressure testing, sealing accessible joints with mastic and mesh, reconnecting separated runs, replacing damaged flex sections, and verifying the repair with a negative pressure test. Most Seagoville homeowners call us after noticing hot rooms, high electric bills, or dust that keeps coming back right after cleaning. Duct Sealing Services here typically run $350 – $850 for a complete single-system job, with larger homes or multiple systems running higher. We don’t quote per-vent prices because that model rewards contractors for doing the minimum.
Pressure Testing Before and After
We test your duct system under negative pressure before we start, so we know exactly how much air you’re losing. After sealing, we test again. The difference is measurable, and we show you the numbers. In Seagoville’s humid climate, a tight duct system also means less moisture getting pulled into your attic or crawl space, which cuts down on mold risk.
Written Price, No Movement
Our technician writes the full price on the work order before any sealing begins. That’s The Garrison Standard. The price does not change at the door, and it does not balloon if we find an extra joint that needs attention. If we missed something in our initial inspection, that’s on us to account for upfront.
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.
Trusted Brands We Service in Seagoville
We seal and repair ductwork connected to equipment from every major manufacturer, and we stock sealing materials and replacement flex runs for Seagoville customers so we’re not ordering parts and making you wait. Our equipment roster includes Rotobrush rotary brush systems for camera inspection and debris removal, plus filtration and sealing products from Aprilaire, Abatement Technologies, and Guardsman. These are the same brands commercial crews use, not hardware-store tape and caulk. When we seal a joint in your Seagoville home, we’re using mastic rated for the temperature cycling your attic sees from May through September.
Common Duct Sealing Problems We See in Seagoville Homes
- Disconnected sheet-metal joints behind air handlers. In older Seagoville homes near the historic downtown, original ductwork for floor furnaces was often retrofitted for central air without proper support. The vibration of a modern blower loosens these joints over time, leaking conditioned air into the attic and pulling in unfiltered air from outside.
- Crushed or separated flex runs in manufactured homes. Seagoville’s manufactured housing stock uses flexible duct that degrades faster under North Texas humidity. We find runs that have collapsed under their own weight or pulled loose at the collar, especially in homes where the original installation lacked proper hangers.
- Undersized returns causing high static pressure. Floor-furnace retrofits often left return ducts too small for modern central-air volume. The blower strains, seals fail prematurely, and homeowners pay higher electric bills for less comfort. Sealing alone won’t fix this; we identify it during inspection and explain your options.
- Tape failures on flex duct from temperature cycling. Standard duct tape dries and cracks in Seagoville’s attic heat. We remove failed tape and replace it with mastic and mesh or mechanical fasteners that survive the temperature swings between summer attic peaks and winter nights.
Pricing for Duct Sealing in Seagoville, TX
Duct sealing in Seagoville typically costs $350 – $850 for a complete single-system job. Smaller homes with accessible ductwork and only a few leaks to address fall toward the lower end. Larger homes, multiple systems, or jobs requiring extensive attic work to reach disconnected runs push toward the higher end. What drives cost: how much of your ductwork we can access without cutting drywall, whether we need to replace crushed flex sections entirely, and whether your system needs return duct modifications beyond sealing. We do not quote per-vent prices. We quote one flat price per system, agreed in writing before work starts. Every estimate is free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Seagoville
Our crews work throughout the eastern Dallas-Fort Worth area, including Seagoville and the surrounding communities of Balch Springs, Wilmer, Mesquite, and Hutchins. If you’re in one of these cities and your ducts are leaking, we cover you under the same pricing structure and the same 365-Day Done Right Promise.
Serving Seagoville, TX - Our Local Coverage Area
We’re based in the Seagoville 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 Seagoville
Older Seagoville homes were frequently built with floor furnaces and later retrofitted for central air, leaving duct joints that were never designed for forced-air pressure. Sealing these leaky connections does more for your comfort and electric bill than cleaning dust out of a system that’s just going to pull in new attic air through the same gaps. Call (361) 326-5060 for a free inspection and we’ll show you exactly where your system is losing air.
Yes, we seal ducts in manufactured homes throughout Seagoville, using mastic and mechanical fasteners rated for flexible duct rather than tape that fails under humidity. Manufactured home flex runs crush and separate easily, so we inspect the full length with cameras and replace damaged sections where sealing alone won’t hold. Call (361) 326-5060 to schedule an estimate.
Seagoville’s humid subtropical climate, with hot summers and frequent temperature swings, causes duct materials to expand and contract constantly. Attic temperatures from May through September degrade tape and caulk, while spring and fall pollen loads mean any leak in your return ducts pulls allergens directly into your living space. We use sealants rated for this thermal cycling, and we verify seals hold under pressure before we leave.
The most common signs we see in Seagoville are rooms that won’t cool evenly, dust that returns quickly after cleaning, higher-than-expected electric bills in summer, and visible gaps or disconnected runs in accessible attic ductwork. If your home was built before 1990 or is a manufactured home, the odds of leaky ducts are high. Call (361) 326-5060 and we’ll pressure-test your system to confirm.
Yes, our sealing and inspection procedures in Seagoville follow NADCA guidelines for duct access, cleaning, and restoration, including pressure testing to verify seal integrity. We document before-and-after pressure readings for every job, and our 365-Day Done Right Promise covers any seal failure within a year at no charge. Call (361) 326-5060 to discuss your system.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Seagoville and the Dallas-Fort Worth area since 2004.