Duct Sealing in Colleyville - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Colleyville

Duct sealing in Colleyville typically runs $450 – $1,200 for a whole-home job depending on access, system size, and how many joints need attention. Most Colleyville homes we work on need sealing at the takeoffs and collar connections, not full duct replacement. Call (361) 326-5060 for a written estimate before any work starts.

Call (361) 326-5060

We’ve been driving to Colleyville from our Dallas-Fort Worth office long enough to know the pattern: a homeowner calls after their third duct cleaning in five years, still seeing dust, still paying high summer electric bills, and wondering why the problem never stays fixed. Usually, the ducts were never sealed properly in the first place. Our Duct Sealing team finds the leaks that cleaning alone can’t fix, then seals them with mastic and mesh so the air goes where it’s supposed to go.

Colleyville’s housing stock tells the story. Most homes here went up between the 1980s and 2000s, built large on generous lots with multiple HVAC zones and long duct runs. The original flexible ductwork is reaching the end of its reliable life. Sagging between joists, crushed against trusses, pulled apart at collars by foundation movement – these aren’t rare problems here. They’re what we expect to find.

Why Hollis Air Duct Cleaning Is Colleyville’s Preferred Duct Sealing Company

We’ve built our reputation in Colleyville on showing up inside the window, pricing in writing, and leaving the site clean. That’s The Garrison Standard, and it’s how every Hollis crew operates. Our technicians are background-checked and uniformed; you know who’s walking into your home before they arrive.

Our phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule. When you call (361) 326-5060, you talk to a person who can book your appointment and give you a real arrival window.

Every duct sealing job we do in Colleyville comes with our 365-Day Done Right Promise. If the seal fails within a year, we come back and make it right at no charge. That includes a free second visit. It’s not a satisfaction guarantee – it’s a written guarantee that the work holds.

We know Colleyville’s neighborhoods. From the older sections near the DFW Airport corridor to the newer infill around Colleyville Boulevard and Glade Road, we’ve worked on the duct systems that came with these homes. We know which builders used aluminum tape that dries out, which neighborhoods have slab foundations that shift with the clay, and where to look first when a homeowner says their upstairs never cools evenly.

Duct Insulation in Colleyville

Duct Insulation in Colleyville addresses a specific problem: the original insulation on trunk lines and attic runs has compressed, torn, or simply aged past the point where it slows heat transfer. In a climate where your AC runs from March through October, uninsulated or poorly insulated ducts in a 140-degree attic waste money every hour the system cycles.

We see this most often in Colleyville homes built in the 1990s and early 2000s. The fiberglass wrap on the original trunk lines has settled or been disturbed by roof work, plumbing repairs, or rodent activity. What’s left is a thin layer doing almost nothing to keep cooled air cold on its way to your living room.

What We Install and Why

We wrap attic trunk lines and exposed supply runs with formaldehyde-free duct insulation rated for North Texas temperature extremes. The product we use holds its R-value through humidity cycles that would degrade cheaper materials. We secure it with mechanical fasteners, not tape that peels, and we seal every seam so moist attic air can’t reach the duct surface.

When Insulation Beats Replacement

Some Colleyville homeowners assume torn insulation means the whole duct run is shot. Usually, it doesn’t. If the metal or flex duct beneath is intact and properly sealed, re-insulating is a fraction of the cost of replacement and solves the thermal loss problem directly. We inspect with a camera before we recommend anything.

HVAC Duct Sealing in Colleyville

HVAC Duct Sealing in Colleyville is the repair that stops conditioned air from leaking into your attic, crawlspace, or wall cavities before it reaches your vents. We use duct sealing mastic – a water-based compound that remains flexible after curing – reinforced with fiberglass mesh at joints and takeoffs. For smaller leaks, we apply mastic alone; for larger separations, we rebuild the connection and seal over it.

The work starts with a pressure test to quantify the leakage. We seal the return, pressurize the system, and measure how much air escapes. In Colleyville homes with original 1980s – 2000s ductwork, we commonly find 20 – 35% leakage – air you’re paying to cool that’s going nowhere useful. After sealing, we test again and show you the before-and-after numbers.

Access and Scope

Most Colleyville homes have attic and crawlspace access that lets us reach the trunk lines and major takeoffs. For slab foundations with ducts in the concrete, we seal at the air handler and any accessible junction boxes. We don’t promise what we can’t reach, and we don’t charge for work we can’t verify.

Multi-Zone Systems

Large Colleyville homes often have two or three HVAC zones with separate air handlers and duct networks. Each zone gets its own pressure test and sealing pass. We’ve found that the zone serving the second story typically leaks more – longer duct runs, more joints, more opportunities for separation – which explains why so many Colleyville homeowners complain that upstairs never keeps up.

Trusted Brands We Service in Colleyville

We carry sealing and insulation products from Abatement Technologies, Guardsman, and Aprilaire – the same lines commercial HVAC contractors use, not hardware-store variants. For Colleyville homeowners, that means we don’t wait on parts. If your system needs a specific collar size, mastic type, or insulation wrap, our trucks are stocked for it. We also use Rotobrush camera systems to inspect before we seal and to verify the work after. When we say a joint is sealed, we’ve looked at it.

Common Duct Sealing Problems We See in Colleyville Homes

• Original flexible duct sags between joists. In Colleyville’s 1980s – 2000s homes, the wire-helix flex duct was often strapped too far apart. Over decades, it droops into low loops that trap debris and restrict airflow to the far registers. We re-support with proper hangers and seal any separations that formed where the duct pulled from its collar.
• Clay soil movement cracks slab penetrations. Colleyville’s expansive black clay soil swells when wet and shrinks when dry. That motion transfers to slab foundations and can pull duct collars away from air handlers or crack the seals where ducts pass through concrete. We seal what we can access and recommend structural repairs when the gap exceeds what mastic can bridge.
• Builder-grade aluminum tape dries and peels. The tape used on original trunk lines wasn’t meant for 20+ years of near-continuous HVAC cycling. It looks sealed until you pressurize the system, then leaks at every joint. We remove the old tape, clean the surface, and apply mastic and mesh for a permanent seal.
• Attic insulation particles infiltrate through gaps. After heavy North Texas rains, clay soil shifts can open gaps at duct joints that draw in loose-fill attic insulation. Homeowners notice white or gray dust at the registers. We find the intake point, seal it, and check the filter – which often needs replacement after pulling debris.

Pricing for Duct Sealing in Colleyville, TX

We Also Serve Cities Near Colleyville

Our crews work throughout the mid-cities and northeast Tarrant County. We regularly seal ducts in Colleyville, Bedford, Euless, Southlake, and Hurst – same written pricing, same 365-Day Done Right Promise, same live-answer scheduling in every market.

FAQs About Duct Sealing in Colleyville