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 Repair & Sealing Across Arlington
Most duct cleaning calls we take from Arlington homeowners end differently than the caller expected. The phone starts with dust or weak airflow; the camera inspection reveals separated joints, brittle flex duct, or attic air dumping into a 130°F crawlspace. In Arlington, Duct Repair & Sealing is often the actual fix, not the add-on.
We dispatch crews to Arlington from our Dallas-Fort Worth office, and we know the housing stock here: slab-on-grade ranches and split-levels built during the 1965-1990 boom that still run original ductwork now 35 to 55 years old. If you’re in Dalworthington Gardens, Pantego, or off Cooper Street near I-20, we can typically schedule within 48 hours. Call (817) 520-8797 and we’ll put a written price in front of you before any panel comes off.
Why CleanRun Air Duct Cleaning Fort Worth Is Arlington’s Preferred Duct Repair & Sealing Company
We’ve served Arlington since we opened in 2013, and the pattern here is distinct from Dallas or Fort Worth. Arlington’s housing stock clusters almost entirely in that single suburban-boom era, so our crews have developed specific familiarity with the failure modes: brittle fiberglass duct board, delaminated flex duct, and Blackland Prairie clay pulling slab-mounted systems apart. That concentration of experience matters when a technician is deciding whether a joint needs mastic sealing or full replacement.
Our Arlington customers receive the same deliverables as every CleanRun job: a written price before work starts, a Documented Photo Record of every duct run before and after, and the 365-Day Done Right Promise backed in writing. Haven Standard Clause 1 is non-negotiable - no estimate is verbal.
Tomas Reyes, who leads CleanRun, still reviews photo records from Arlington jobs personally. The crews are background-checked and uniformed under Haven Standard Clause 3: Verified Crews, and they arrive identified by name.
Our Duct Repair & Sealing Services in Arlington
Duct Sealing with Mastic Sealant
In Arlington’s original tract homes, the duct board and flex duct of the 1970s and 1980s was never designed to last half a century. The fiberglass facings delaminate; the foil backing cracks at every bend. We apply professional-grade mastic sealant - a thick, fiber-reinforced compound that remains flexible after curing - to every accessible joint, collar, and register boot. Unlike foil tape, which degrades in attic heat, mastic seals survive Arlington’s 130°F attic temperatures and the near-continuous AC season that runs May through October. A typical mastic sealing job on a 1,800-square-foot Arlington ranch runs $340-$580, depending on how many joints are accessible and how much degraded material must be removed first.
Flex Duct Repair
Early-generation flex duct in Arlington homes has become brittle and prone to crushing where it was strapped too tightly or where insulation has packed the core. We replace collapsed or torn runs with new flex duct sized to the original Manual D specification, supported at proper intervals to prevent sagging, and sealed with mastic at both ends. In the 76013 and 76014 zip codes, we regularly find flex duct that has pulled entirely free of the plenum, dumping conditioned air into the attic and drawing loose insulation into the return. A single flex duct run replacement in Arlington typically costs $180-$320; a full trunk line rebuild runs $680-$1,200.
Metal Duct Repair
Some Arlington homes, particularly those built in the late 1960s with galvanized steel trunks, suffer from rust-through at low points where condensation collects, or from separated slip joints where the original sealant has hardened and fallen away. We cut out corroded sections, fabricate replacement segments, and seal with mastic and mechanical fasteners. Metal duct repair in Arlington generally runs $420-$890 for localized work, $1,400-$2,200 for extensive trunk replacement.
Duct Insulation
Where Arlington’s attic temperatures destroy duct insulation, we install new wrap or replace the duct entirely with pre-insulated flex. Proper insulation prevents the condensation that leads to mold colonization, particularly critical given Arlington’s post-thunderstorm humidity spikes. Insulation replacement on accessible trunk lines runs $260-$540.
Air Leak Repair
The most expensive air in your house is the air you paid to cool that never reaches a register. In Arlington, we find that 20-35% of conditioned air leaks into attics and wall cavities through failed joints. Our leak repair protocol combines blower-door-informed pressure testing with visual inspection and mastic sealing of every identified breach. Whole-system air leak repair in Arlington typically runs $580-$1,100 for a single-system home.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in Arlington
CleanRun crews work with professional-grade equipment from trade-recognized manufacturers. Our negative-pressure extraction systems include units from Abatement Technologies and Nikro; agitation and brushing tools from Rotobrush; and filtration and control components from Honeywell and Aprilaire. We stock mastic sealant, flex duct, and mechanical fasteners for same-day repair on most Arlington jobs, so a crew doesn’t leave your house with a temporary patch and a promise to return. Every piece of equipment is documented in your job record, and you can verify manufacturer specifications independently.
Common Duct Repair & Sealing Problems We See in Arlington Homes
- Original fiberglass duct board has gone brittle and delaminated. The 1970s and 1980s duct board in Arlington tract homes sheds fiberglass particles into supply air as the facing separates from the core. Joints open at plenum connections and register boots, pulling attic insulation directly into the system.
- Blackland Prairie clay movement shears slab-mounted connections. Seasonal expansion and contraction of the expansive clay beneath Arlington’s slab-on-grade homes routinely pulls duct joints apart at registers and plenums. In late-1960s and early-1970s houses, this movement can awaken dormant under-slab branches holding standing water and sediment from decades of clay shift.
- Near-continuous AC operation accelerates joint failure and biofilm accumulation. Arlington’s May-October cooling season keeps systems running 16-20 hours daily during peak months. Every failed joint mixes 130°F attic air with 55°F supply air, and post-storm humidity spikes create condensation conditions that accelerate mold colonization inside already-compromised ducts.
- Under-slab supply branches in pre-1975 homes collect water and sediment. Technicians in Arlington frequently discover that visible attic ductwork connects to partially active or dormant under-slab lines. These branches, almost never encountered in newer Mansfield or Keller subdivisions, can harbor standing water and restrict airflow to entire zones of the house.
Pricing for Duct Repair & Sealing in Arlington, TX
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts, and that price should not surprise you.
| Service | Typical Range in Arlington |
|---|---|
| Mastic sealing (whole system) | $340-$580 |
| Single flex duct run replacement | $180-$320 |
| Full flex trunk rebuild | $680-$1,200 |
| Metal duct repair (localized) | $420-$890 |
| Metal trunk replacement (extensive) | $1,400-$2,200 |
| Duct insulation replacement | $260-$540 |
| Whole-system air leak repair | $580-$1,100 |
| Under-slab branch evaluation and remediation | $890-$1,600 |
What moves a job to the higher end: limited attic access, extensive debris removal required before sealing can begin, multiple failed trunk connections, or discovery of under-slab branches that need camera evaluation and possible abandonment or rerouting. What keeps it lower: accessible joist bays, localized joint failure, and straight run replacement without plenum rebuild.
Every estimate is free, delivered in writing, and held under our Free Second Opinion policy: bring a competitor’s written quote and we’ll put our number beside it, line item by line item. Call (817) 520-8797 to schedule.
We Also Serve Cities Near Arlington
CleanRun crews work throughout the Dallas-Fort Worth metroplex. If you’re in Mansfield, Burleson, Grand Prairie, or Fort Worth, the same Duct Repair & Sealing in Arlington protocols apply: written price first, documented photo record on completion, 365-Day Done Right Promise. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office; crews serve each city locally with the same equipment roster and Haven Standard requirements.
Serving Arlington, TX - Our Local Coverage Area
We’re based in the Arlington 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 Arlington
Arlington’s housing stock is unusually concentrated in the 1965-1990 tract-home boom, meaning most single-family houses still run original flex duct or fiberglass duct board now 35-55 years old. That material has gone brittle; joints separate at plenums and registers, and Blackland Prairie clay movement under slabs makes the problem worse. A cleaning removes debris but cannot restore structural integrity to failed connections. Sealing is the actual fix. Call (817) 520-8797 for a camera inspection and written estimate.
An under-slab duct branch is a supply line routed through the concrete foundation slab rather than the attic, a construction method used in some Arlington homes built in the late 1960s and early 1970s. If your house has visible attic ductwork but certain rooms - typically back bedrooms or additions - never cool properly, a camera inspection can determine whether those rooms are fed by dormant or partially active under-slab lines that have collected sediment or standing water from decades of clay soil movement. Call (817) 520-8797 and we’ll check.
Probably. We ran a camera inspection on a 1972 slab ranch off Arkansas Lane near Bowman Springs and found the supply trunk at the air handler had separated from the plenum, dumping conditioned air into a 130°F attic while drawing loose insulation debris straight into the supply and return ducts. After source removal with agitation tools and HEPA filtration under negative pressure, we rebuilt the collar, mastic-sealed every joint we could reach, and re-insulated the trunk - static pressure dropped and the blower motor stopped short-cycling. The homeowner said the back bedrooms hadn’t been this cool in years. A 1978 Arlington home likely shares the same duct board or early flex duct materials. Call (817) 520-8797 for an evaluation.
Yes. The expansive clay soil beneath Arlington’s slab-on-grade homes swells when wet and shrinks when dry, creating seasonal movement that pulls duct connections apart at registers, plenums, and trunk collars. This is not a foundation problem alone; it’s a mechanical separation issue that creates air leaks and draws attic debris into supply lines. Homes in newer subdivisions with engineered fill or pier-and-beam construction experience this less severely. Arlington’s concentrated stock of 1960s-1990s slab tract homes makes clay-related duct failure particularly common here. Call (817) 520-8797 for a written evaluation.
We use remote camera inspection, static pressure testing, and thermal imaging to identify breaches inside walls, behind insulation, or in under-slab branches that attic visual inspection cannot reach. The camera shows debris build-up, joint separation, or standing water; pressure testing quantifies how much air is leaking and where; thermal imaging reveals temperature anomalies that indicate failed insulation or hidden leaks. Every finding is photographed and included in your Documented Photo Record. Call (817) 520-8797 to schedule a full diagnostic with written findings.
Ready for a written estimate on duct repair and sealing in Arlington? Call CleanRun at (817) 520-8797. A live person answers, 24/7. We’ll schedule a camera inspection, deliver a written price before any work starts, and leave you with a Documented Photo Record of every duct run - plus the 365-Day Done Right Promise, in writing, on every job.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Fort Worth, serving Arlington since 2013.