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 Northlake
Duct sealing in Northlake typically runs $400 – $900 for a whole-home system, and most jobs are scheduled within a few business days after your call. We’re the Duct Sealing in Northlake crew that shows up in uniform, prices the work in writing before we touch anything, and hands you a 365-Day Done Right Promise backed by the Garrison Partners family. Our dispatch office coordinates from Dallas-Fort Worth, but our technicians live and work in the Metroplex, so we know the difference between a new subdivision off Hwy 114 and an acreage property on the Denton County line. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Northlake’s Preferred Duct Sealing Company
We’ve been in business since 2004, and our reputation in Northlake is built on one thing: doing what we said we’d do. That includes Northlake Dryer Vent Cleaning done right. That means arriving inside the quoted window, not renegotiating the price at the door, and leaving the site clean.
Our Northlake customers aren’t looking for the cheapest bid. They’re looking for the bid they can trust. We’ve heard the stories – crews who no-showed, prices that jumped once the van was in the driveway, or technicians who couldn’t explain what they were actually doing. That doesn’t happen here. Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive.
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 know Northlake’s housing. The new subdivisions near IH-35W and Hwy 114 with their builder-grade flex duct. The older rural core with long exposed runs baking in attic heat. The prairie dust that coats everything. That local knowledge changes what we look for and how we fix it.
Air Duct Sealing in Northlake
Air Duct Sealing in Northlake is rarely about sealing ducts that have aged for decades. Most of our sealing work happens in homes built since the 2000s, where builder-installed flex duct arrives with loose takeoff collars, crushed runs where installers stepped on them during construction, and transitions stuffed with drywall dust and sawdust. We find these failures with a tensioned camera inspection under negative pressure, seal the joints with mastic and mesh, and document everything for your builder punch list if you’re still under warranty. Typical whole-home sealing runs $400 – $900 depending on system size and accessibility.
What We Find in New-Build Inspections
In one of the new subdivisions off Hwy 114, we pulled a supply run against a builder-grade flex duct and found the takeoff collar barely attached to the trunk, with a fistful of drywall dust and sawdust packed at the transition. We sealed the collar with mastic and mesh, re-tensioned the adjacent flex runs, and handed the homeowner a photo log for the builder punch list. The static pressure at the air handler dropped and the rooms that never got airflow finally did.
When Sealing Beats Cleaning
Some Northlake homeowners call us for duct cleaning when the real problem is leakage. If your HVAC runs constantly but certain rooms stay hot or cold, or your energy bills spike for no clear reason, disconnected or poorly sealed duct is often the culprit. We check first. We don’t sell you cleaning when sealing is what you need.
Duct Sealing Services in Northlake
Duct Sealing Services in Northlake split between two very different housing types. In the new subdivisions, we’re fixing builder-grade installs. In the older rural and manufactured-home core along the town’s edges, we’re dealing with long exposed flex runs that have baked in attic heat for years and split at the seams. Same town. Completely different failure modes. Our Duct Sealing team carries the equipment for both: mastic and mesh for rigid connections, re-support hardware for sagging flex runs, and negative-air camera systems from Nikro to find leaks you can’t see from the register. Pricing starts around $400 for targeted sealing of accessible problem areas and runs to $900 for whole-home systems with multiple access points.
Builder-Grade Flex Duct Fixes
New Northlake subdivisions use flexible duct with foil backing. It’s lightweight and cheap to install. It’s also easy to crush, kink, or pull loose at the collar. We reattach takeoffs with mechanical fasteners, seal with water-based mastic rated for HVAC use, and add support straps where the original install left the duct hanging free. The goal is a sealed system that moves design airflow to every room.
Rural and Manufactured-Home Sealing
On the older properties, we often find flex duct that was never properly supported, so it sags, collects condensation, and splits at the low point. Sealing the split without re-supporting the run just moves the leak. We fix the support first, then seal. These jobs take longer because the duct is often exposed in crawl spaces or attic areas with limited access.
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 Northlake
We stock parts and materials from Honeywell, Aprilaire, and Abatement Technologies for Northlake jobs, which means we’re not waiting on a warehouse shipment to finish your repair. Our Nikro negative-air machines and camera systems are the same tools commercial crews use, and we explain what they’re doing in plain terms while we work. If your system uses Honeywell filtration components or Aprilaire zoning controls, we can integrate sealing work with those systems without compatibility issues. Fast turnaround matters in Northlake’s summer heat, when a leaking duct system can push your electric bill up 20 – 30 percent while the house still won’t cool.
Common Duct Sealing Problems We See in Northlake Homes
- Loose takeoff collars in new subdivisions. Builder-grade flex duct in Northlake’s subdivisions off IH-35W and Hwy 114 often arrives with takeoff collars that were never properly fastened to the trunk line. We find these with negative-pressure camera inspection, seal them with mastic and mesh, and document the finding for warranty claims.
- Crushed runs from construction traffic. Flex duct gets stepped on during the build, especially in two-story homes where installers move materials through the attic. The crush doesn’t always tear the duct, but it restricts airflow enough that rooms downstream never condition properly. We replace crushed sections and seal the new connections.
- Blackland Prairie dust hiding disconnections. Northlake’s clay-rich prairie dust and spring pollen coat the interior of flex duct, making a disconnected run invisible from a quick visual check. Only camera inspection with negative pressure applied reveals the gap. We’ve pulled registers to find them packed with dust while the duct behind was wide open.
- Split seams on older exposed runs. In Northlake’s rural core and manufactured-home properties, long flex runs in hot attics degrade at the seams. The outer foil jacket cracks, the insulation sags, and the inner liner tears. Sealing without re-supporting just relocates the stress point. We do both.
Pricing for Duct Sealing in Northlake, TX
A typical whole-home duct sealing job in Northlake runs $400 – $900. Targeted sealing of one or two accessible problem areas starts around $400. Whole-system work with multiple access points, re-support of sagging runs, or replacement of crushed sections can reach $900. 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.
What moves the price: system size (more duct means more labor), attic or crawl-space accessibility, whether we’re sealing existing connections or replacing crushed/disconnected sections, and whether documentation for a builder warranty claim is required. We don’t quote over the phone without seeing the system, because two homes on the same Northlake street can have completely different duct conditions. The estimate is free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Northlake
Our crews work across the Metroplex and beyond. We regularly schedule Northlake jobs alongside work in Dallas, Fort Worth, Houston, and San Antonio. Dispatch is coordinated from our Dallas-Fort Worth office, but technicians are local to each area we serve. If you’re in one of these cities and need the same standard – written price, written guarantee, background-checked crew – we cover those markets too.
Serving Northlake, TX - Our Local Coverage Area
We’re based in the Northlake 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 Northlake
Builder-grade flex duct in Northlake’s new subdivisions is often installed fast and loose, with takeoff collars barely attached and construction debris left inside. We’ve found completely disconnected supply runs in homes still under warranty. Sealing corrects installation defects, not age damage. Call (361) 326-5060 for an inspection and we’ll show you what the camera sees.
Drywall dust, sawdust, wood scraps, and occasionally fasteners or tape backing left by construction crews. More importantly, we find disconnected or poorly sealed joints that leak conditioned air into attics and crawl spaces. We document everything with photos for your builder punch list. Call (361) 326-5060 to schedule a camera inspection.
Older rural and manufactured-home properties have long exposed flex runs that sag, collect condensation, and split at the seams from years of attic heat exposure. Sealing alone doesn’t fix these – we re-support the run first, then seal. The materials and labor differ from new-subdivision work. Call (361) 326-5060 and we’ll assess what your system needs.
Yes. Our sealing work follows NADCA guidelines for access, cleaning before sealing, mastic application thickness, and curing time. We use professional-grade materials – not hardware-store tape – and we test static pressure before and after to verify the fix. The 365-Day Done Right Promise covers our sealing work in writing. Call (361) 326-5060 for details.
Sealing stops unfiltered air from being pulled into leaky return ducts through attics and crawl spaces, which is a major source of dust and pollen in Northlake homes. It won’t eliminate tracked-in dirt, but it cuts the fine clay-rich prairie dust that blows through leaky connections during our windy spring and fall seasons. Call (361) 326-5060 for a free estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Northlake since 2004.