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-$750 for most residential jobs, with under-slab repairs in older homes sometimes reaching $1,200-$2,400 when camera inspection reveals cracked concrete penetrations. We dispatch crews daily from our Dallas-Fort Worth office to neighborhoods throughout the city, and we quote a written price before any panel comes off. Call (469) 405-6133 for a free estimate with no obligation.
Our Duct Repair & Sealing team has worked inside homes from Casa View to Oak Cliff, and the pattern is consistent: Dallas’s combination of expansive clay soil and decades of near-continuous HVAC runtime creates duct failures that cleaning alone cannot fix. We document what we find, photograph every run before and after, and seal what needs sealing - Haven Standard Clause 1 means the price is written and agreed before the first tool comes out.
Why CleanRun Air Duct Cleaning Dallas Is Dallas’s Preferred Duct Repair & Sealing Company
CleanRun has served Dallas since 2013 with a simple standard: every job gets a written price first, a photo record last, and the 365-Day Done Right Promise in between. We’ve completed work in over 52,000 homes, and every one left with documentation the customer could keep.
Dallas homeowners research before they call. They check license numbers, read equipment lists, and ask about guarantees in writing. We publish our license number on every page, name the brands we use - Rotobrush, Nikro, Honeywell, Aprilaire, Abatement Technologies - and deliver the Haven Standard as a written document, not a slogan. Haven Standard Clause 3, Verified Crews, means background-checked, uniformed technicians identified by name before arrival.
Our Dallas-Fort Worth office coordinates scheduling and dispatch for the metro, so crews reach Dallas neighborhoods without the delays of out-of-market operators. We’ve worked on slab-foundation ranches near Buckner Boulevard, two-story flex-duct homes in Lake Highlands, and mid-century brick houses in Pleasant Grove. That local familiarity means faster diagnosis and repairs that match the actual construction, not a generic approach.
Every estimate includes our Free Second Opinion policy: bring a competitor’s written quote, and we’ll put our number beside it. No charge. No pressure.
Our Duct Repair & Sealing Services in Dallas
Duct Sealing
Dallas homes lose 20-30% of conditioned air through leaks at joints, collars, and slab penetrations. In older Casa View and Pleasant Grove homes with under-slab returns, that leakage pulls in Blackland Prairie soil and ground moisture. We seal with mastic sealant rated for the pressure and temperature cycles of Dallas’s near-year-round HVAC runtime. A typical duct sealing job in Dallas runs $280-$550 for a single system, depending on access and linear footage.
Flex Duct Repair
Flex duct installed in Dallas attics during the 1990s and 2000s sits in 150-160°F summer heat that degrades the liner and separates joints at collars and wyes. We replace collapsed or torn sections with new insulated flex, secure with mechanical fasteners (not tape alone), and verify with a pressure test. Flex duct repair in Dallas typically costs $180-$340 per run, with whole-attic replacements running $800-$1,400.
Metal Duct Repair
Galvanized steel ductwork in pre-1990 Dallas homes corrodes at seams and develops whistle leaks that pressurize wall cavities. We patch or replace sections, re-seal with mastic, and reinforce at stress points. Metal duct repair in Dallas runs $320-$680 for localized work, with extensive galvanized replacement reaching $900-$1,500.
Duct Insulation
Uninsulated or degraded duct insulation in Dallas attics allows condensation in summer and heat loss in the brief winter heating season. We install closed-cell or fiberglass insulation rated for the temperature extremes of North Texas attics. Duct insulation in Dallas typically runs $2.50-$4.20 per linear foot, with most residential systems falling between $450-$950 total.
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
We repair and seal ductwork connected to HVAC systems from every major manufacturer, and we stock common fittings and sealants for faster turnaround on Dallas jobs. Our equipment roster includes Nikro negative-pressure extractors, Honeywell media air cleaners, and Aprilaire whole-home ventilation controls - brands customers can research independently before we arrive. Abatement Technologies HEPA filtration runs on every job where disturbed particulate is a concern, including after under-slab repairs where clay soil has entered the system. We don’t claim performance beyond manufacturer specifications. We do claim that our technicians can name what’s in the van and why it’s there.
Common Duct Repair & Sealing Problems We See in Dallas Homes
- Cracked under-slab ducts from clay soil movement. Dallas’s Blackland Prairie “black gumbo” clay swells when wet and shrinks when dry, displacing ductwork embedded in or beneath the slab. We regularly find fine silty clay packed into returns in 1960s-1980s homes from Casa View to Oak Cliff - a failure mode that doesn’t exist in cities with stable soils or above-slab systems.
- Heat-degraded flex duct in attics. Dallas attics reach 150-160°F for months each summer, accelerating the breakdown of flex duct liner and adhesive at joints. The result is collapsed runs, separated collars, and conditioned air dumped into the attic instead of the living space.
- MERV rating mismatch causing cross-contamination. With HVAC systems running nearly year-round in Dallas, a filter too dense for the blower motor restricts airflow and allows lint-pathway debris to bypass filtration, contaminating the blower and supply registers. A repaired duct system needs the right filter pairing, not just the highest number on the shelf.
- Disconnected or crushed duct runs found during cleaning. Decades of foundation movement, rodent activity, or amateur HVAC modifications leave Dallas homes with runs that look intact from the register but are fully separated at the plenum. Our camera inspection finds these before we quote sealing or repair.
Pricing for Duct Repair & Sealing in Dallas, TX
We publish ranges because Haven Standard Clause 1 requires a written price before work starts - no exceptions. Here’s what duct repair and sealing costs in Dallas’s market:
| Service | Typical Range in Dallas |
|---|---|
| Duct sealing (mastic, single system) | $280 - $550 |
| Flex duct repair (per run) | $180 - $340 |
| Metal duct repair (localized) | $320 - $680 |
| Under-slab duct repair with camera scope | $1,200 - $2,400 |
| Duct insulation (whole system) | $450 - $950 |
| Full system pressure test and documentation | $150 - $250 (included with repair) |
Factors that move the price: access difficulty (crawl space vs. attic vs. slab penetration), linear footage of damaged duct, and whether camera inspection reveals structural issues requiring slab penetration re-sealing. We deliver the written price on-site after inspection, before any work begins. Estimates are free. Call (469) 405-6133 to schedule.
We Also Serve Cities Near Dallas
Our crews work throughout the Dallas-Fort Worth metro, including Dallas proper and neighboring communities: Irving to the west, Mesquite to the east, Grand Prairie to the southwest, and Richardson to the north. Scheduling and dispatch are coordinated from our Dallas-Fort Worth office for efficient routing across the metro.
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
The Blackland Prairie clay beneath your foundation swells and shrinks seasonally, cracking under-slab duct runs common in 1960s-1980s Dallas homes. Ground moisture and fine silt enter through those cracks, appearing as wet clay when we remove access panels. This is a structural duct failure, not ordinary dust accumulation, and it requires sealing the slab penetration, not just vacuuming the debris. Call (469) 405-6133 for a camera inspection and written repair estimate.
We do both, but we seal what needs sealing. Cleaning a slab duct with cracked concrete penetrations without repairing the entry point is temporary work. Our standard process includes camera scoping, mastic sealing of compromised slab penetrations, and pressure verification before we consider the job complete. The photo record shows you the before condition, the sealed penetration, and the post-repair pressure test.
Dallas attics reach 150-160°F for four to five months annually, which degrades flex duct liner adhesive and accelerates joint separation at collars and wyes. Flex duct that might last 20 years in a cooler climate often needs replacement or reinforcement in 12-15 years here. We use mechanical fasteners and mastic rated for the thermal cycling, not tape alone, and we verify with a pressure test before we leave.
Most Dallas residential systems with repaired and sealed ductwork perform best with MERV 8-11, depending on blower motor specifications. A higher MERV rating restricts airflow in systems not designed for it, and with Dallas’s near-year-round HVAC runtime, that restriction forces debris around the filter, contaminating the blower and supply registers. We note the appropriate rating on your written job record after repair completion. Call (469) 405-6133 if you’re unsure what your system can handle.
Because the failure mode is structural, not superficial. In cities with stable soils or above-slab ductwork, a vacuum and brush pass is sufficient. In Dallas’s expansive clay zones, cleaning without inspecting risks missing cracked slab penetrations that will re-contaminate the system within months. The camera scope adds diagnostic time but prevents repeat visits and recurring contamination. We include the scope in our under-slab repair pricing and show you the footage as part of the documented photo record.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Dallas since 2013.