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 Repair & Sealing Across Dallas
Duct repair and sealing in Dallas typically runs $280-$680 for most residential jobs, with flex duct replacement in a single run starting around $340 and full-system mastic sealing on an older ranch home reaching the higher end. We’re usually on-site within two business days across Dallas, with scheduling coordinated from our Dallas-Fort Worth office and crews running local routes through Lake Highlands, Garland, and Irving daily. Call (682) 297-4068 and we’ll put a written price in front of you before any panel comes off - Haven Standard Clause 1.
Why CleanRun Air Duct Cleaning Irving Is Dallas’s Preferred Duct Repair & Sealing Company
We’ve been documenting the inside of Dallas ductwork since 2013 - 52,000 homes later, every single job still starts with a written price and ends with a photo record of every run. Our Dallas customers keep the before-and-after images. They show neighbors.
Our crews know the difference between a 1962 Lakewood ranch with original metal duct and a 1987 Lake Highlands split-level with flex duct that’s been cooking in 150°F attics for three decades. That local knowledge changes what we bring on the truck and what we expect to find.
Haven Standard Clause 3 means verified crews - background-checked, uniformed, identified by name before arrival. No exceptions. The 365-Day Done Right Promise is backed in writing on every Dallas job, not tucked into a website footer. And if you’ve got a competitor’s written estimate, we’ll put ours next to it free. That’s Haven Standard Clause 7.
Calls are answered by a live person, 24/7. Not a queue. A person who can see our Dallas route board and tell you honestly when the next opening sits.
Our Duct Repair & Sealing Services in Dallas
Flex Duct Repair
Dallas destroys flex duct faster than almost any market we work. The inner liner - the plastic sleeve that actually carries your conditioned air - separates from boot collars after years of 150°F+ attic exposure, especially in 1970s ranches across Lake Highlands and Garland. We don’t just tape over the symptom. Our crews reattach the liner, seal the collar with mastic, and pressure-test the repair before we close the ceiling. Equipment includes Nikro inspection cameras and Abatement Technologies negative-pressure tools so you see what we saw.
Mastic Sealant Application
Mastic is the only sealant that survives Dallas attic heat long-term. Tape dries and curls. Mastic stays flexible. We brush it onto every joint, seam, and penetration in your duct board plenum - the distribution box that splits air to each run - then photograph the coverage before the wrap goes back on. On older Dallas homes with original duct board plenums, we often find mastic that’s cracked after 30-50 years of near-continuous cooling cycles. We strip the old, apply new, and document the repair.
Duct Insulation Replacement
R-4 insulation from the 1980s is now R-2 at best - compressed, moisture-damaged, or chewed by attic pests. We wrap trunk lines and repaired runs with R-8 fiberglass insulation in Dallas attics, where every degree of thermal resistance matters when it’s 160°F outside the duct and 72°F inside. The wrap gets sealed with vapor-barrier tape, not duct tape. Difference matters in this heat.
Metal Duct Repair & Custom Fabrication
Pre-1980 Dallas homes, especially in east Dallas and Lakewood, often run galvanized steel trunk lines with stamped-branch takeoffs. We patch rust-through, replace failed dampers, and fabricate transition pieces on-site when the original fittings are obsolete. No waiting for a parts order.
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.
BeforeAfterTrusted Brands We Service in Dallas
Our trucks carry Honeywell zone dampers and Aprilaire fresh-air intake components for common Dallas retrofit jobs - adding a damper to a trunk line that’s never had one, or sealing a fresh-air duct that’s been pulling unfiltered attic air since installation. We don’t stock everything, but we stock what fails most often in Dallas’s heat and clay-dust environment. That means faster turnaround on your repair, not a second trip.
Common Duct Repair & Sealing Problems We See in Dallas Homes
- Flex duct inner liners cooked loose at boot connections. In Lake Highlands and Garland homes from the 1970s, our techs regularly find the plastic liner has separated from the ceiling boot collar, silently drawing raw attic air and blown-in insulation fibers into bedrooms. The homeowner notices reduced airflow last - sometimes years after the failure started.
- Mastic seals cracked on duct board plenums after decades of cooling cycles. Dallas’s near-year-round cooling season means your air handler cycles 8-9 months annually. That vibration and thermal expansion cracks old mastic, opening the plenum to attic air and destroying the negative pressure that pulls return air efficiently.
- Blackland Prairie clay dust coating supply runs. Dallas’s spring and fall windstorms lift ultra-fine clay particles from exposed soil - especially on rural properties near unpaved roads - and draw them into any duct system with a compromised seal. The deposit is distinctive: reddish-brown, finer than household dust, visible on camera.
- Detached garage and outbuilding duct runs left unsealed. On rural Dallas properties with shop buildings, guest houses, or pool equipment sheds on separate HVAC systems, ductwork often runs through unconditioned space with zero maintenance history. Unpaved road dust and pollen load these supply ducts 2-3 times faster than the main house.
Pricing for Duct Repair & Sealing in Dallas, TX
A typical flex duct repair on a single run in Dallas runs $280-$420, including liner reattachment, mastic sealing, and insulation wrap. Full-system mastic sealing on a ranch home with 8-12 supply runs and a duct board plenum typically falls between $480-$680. Duct insulation replacement on a trunk line adds $180-$340 depending on linear footage.
What moves the number: accessibility (crawl space vs. walkable attic), number of failed boots or separated liners, whether the plenum itself needs resealing, and whether we find rodent damage requiring metal patching. Rural properties with outbuilding systems add travel time and often reveal multiple undetected failures.
We deliver the written price before any work starts - Haven Standard Clause 1. No per-vent pricing. No coupon that balloons once the truck arrives. Call (682) 297-4068 for an exact quote. Estimates are free.
We Also Serve Cities Near Dallas
Our crews run daily routes through Dallas, Irving, Grand Prairie, Richardson, and Carrollton from our Dallas-Fort Worth office. Same written-price standard, same photo documentation, same 365-Day Done Right Promise in every city. If you’re on the edge of our service area, call and we’ll tell you honestly whether your property sits on a regular route or needs scheduled dispatch.
Serving Dallas, TX - Our Local Coverage Area
We’re based in the Dallas 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 - Duct Repair & Sealing in Dallas
Every 2-5 years for rural Dallas properties on unpaved roads, compared to 3-7 years for homes on paved streets in established neighborhoods. The unpaved road dust and pollen load - especially during spring windstorms across the Blackland Prairie - deposits fine clay and organic material into supply ducts at roughly double the rate of urban properties. Properties with detached shops or outbuildings on separate systems often need those runs addressed more frequently than the main house. Call (682) 297-4068 and we’ll scope your specific setup.
Dallas attics reach 150-160°F routinely in July and August, 10-20 degrees hotter than Houston’s coastal humidity or San Antonio’s hill-country ventilation. That sustained heat cooks the adhesive bonding flex duct inner liners to boot collars, and it degrades the plasticizer in the liner itself. Combined with 8-9 months of annual cooling-system runtime - among the longest in Texas - Dallas flex duct simply accumulates more thermal hours faster. The 1970s housing stock in Lake Highlands and Garland concentrates the problem: original materials, maximum heat exposure, decades of use.
Yes. We repair and seal ductwork in detached garages, shop buildings, guest houses, and pool sheds on rural Dallas properties. These systems are often installed as afterthoughts - flex duct run through unconditioned attic space with minimal sealing, pulling dust and pollen every time the blower cycles. Our crew photographs the full run, delivers a written scope, and completes the repair under the same Haven Standard pricing structure as your main house. Outbuilding systems typically need more frequent attention than the primary residence.
We start with a camera inspection of every accessible run, photographing the inside of each duct before touching anything. Then we deliver a written scope and price - Haven Standard Clause 1 - with the photo record attached. Once approved, we repair or replace failed components, seal all joints with mastic, replace degraded insulation, and pressure-test the system. The visit concludes with after-photos of every run and the 365-Day Done Right Promise in writing. A typical Dallas ranch home takes 4-6 hours. You’re welcome to watch the camera feed in real time.
Three signs we see most often in Dallas: uneven temperatures between rooms that share a wall, dust accumulation on supply registers that’s heavier than elsewhere in the house, and a sudden spike in cooling bills without thermostat changes. The definitive check is a camera inspection - we run a Nikro scope through the supply run and look for detached liners, cracked mastic, or gaps at boot connections. On a 1974 ranch in Lake Highlands, our tech ran a camera inspection and found the flex duct inner liner detached at a ceiling boot, pulling attic air and Blackland Prairie clay dust straight into a bedroom supply register. We reattached the liner, sealed the collar with mastic, and wrapped the trunk line with new R-8 insulation to stop the bypass. A blower door test showed the supply and return ducts were no longer leaking into the attic. Call (682) 297-4068 to schedule the same inspection at your home.
Ready to see what’s actually inside your ducts? Our Duct Repair & Sealing team serves Dallas with written prices before any work starts, documented photo records on every visit, and the 365-Day Done Right Promise backed in writing. No per-vent pricing. No coupon bait-and-switch. Call (682) 297-4068 for a free estimate - a live person answers, 24/7.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Dallas since 2013.