Fast, Reliable Duct Repair & Sealing Across Arlington
Duct repair and sealing in Arlington typically runs $180-$650 depending on whether you need spot sealing with mastic, flex duct replacement, or full metal duct restoration. Most Arlington jobs are completed in a single visit, and our Duct Repair & Sealing team dispatches from our Dallas-Fort Worth office with crews serving Arlington neighborhoods directly. Call (844) 685-6342 for a free estimate with upfront pricing before any work begins.
We’ve been the square-deal choice for homeowners who’ve lived in the same house for twenty years or more and don’t want to think about the job again once it’s done. In Arlington, that means understanding homes built between 1900 and 1945, where retrofitted forced-air systems snake through original plaster-and-lath walls and basement crawlspaces hold ductwork that predates most of the technicians who might work on it. We show up when we say we will, in uniform, with camera inspection equipment and the patience to do the work right on older systems that don’t forgive shortcuts.
Why Bellows Air Duct & Vent Co. Is Arlington’s Preferred Duct Repair & Sealing Company
Ray Castillo has led Bellows Air Duct & Vent Co. for over 42 years, and our reputation in Arlington is built on one thing: we return only when the calendar says it’s time for maintenance, not because something we touched failed. Our 90-Day Done Right Promise means if it’s not right, we make it right with no paperwork and no arguing. That promise is stamped on every job, and it’s why Arlington homeowners call us back and send their neighbors.
Calls are answered by a live person, 24 hours a day. Not voicemail. Not an app. When you’re pulling dusty air through a gap in a century-old furnace casing, you want to talk to someone who can dispatch a crew, not leave a message and hope. Our background-checked, uniformed technicians carry flexible-shaft equipment designed for the tight clearances and sharp bends common in Arlington’s older housing stock. Most repairs are completed in a single visit.
We know the difference between a quick mastic patch and a proper seal on oil-coated metal from a coal conversion. Less-experienced technicians skip the surface prep, and their seals fail in a season. We don’t. Camera inspection before and after every job gives you a visual record, not just a claim. That’s the Bellows difference, and it’s why Arlington homeowners who’ve been burned by low-bid contractors before trust us with their older systems.
Our Duct Repair & Sealing Services in Arlington
Duct Sealing
Arlington’s retrofitted systems lose conditioned air at every unsealed joint, plenum connection, and penetration through plaster-and-lath walls. Our duct sealing service targets these leaks with professional-grade mastic applied after proper surface preparation. In the many two-family homes along and off Massachusetts Avenue, we regularly find return plenums cut directly into original coal-era gravity-furnace casings, gaps that pull decades-old soot and attic dust directly into your air stream. We seal these historical junctions properly, not with tape that’ll dry and peel in Arlington’s humidity.
Mastic Sealant Application
Mastic is the right material for Arlington’s metal ductwork, but only when the surface is prepped correctly. The oil-coated metal left from old coal-to-gas conversions in 02474 and 02476 won’t hold a seal if a technician skips the degreasing step. We apply Abatement Technologies and Guardsman-grade mastic compounds after proper prep, building a flexible, permanent seal that handles thermal expansion through Arlington’s heating and cooling seasons. A typical mastic sealing job in Arlington runs $180-$340 for accessible basement and crawlspace runs.
Metal Duct Repair
The large-diameter sheet-metal duct systems installed for gravity-fed coal furnaces in Arlington’s 1910s-1940s homes often carry 60-80 years of layered coal soot, conversion debris, and biological buildup. Standard cleaning intervals underestimate this accumulation. Our metal duct repair service addresses corrosion holes, separated seams, and damaged sections in these older trunk lines. We don’t replace what can be restored, and we don’t patch over problems that need structural repair. Metal duct repair in Arlington typically ranges from $280-$550 depending on accessibility and the extent of damage.
Flex Duct Repair
When central A/C was retrofitted into Arlington’s older homes, flex duct was often squeezed through non-standard paths in original framing, creating sharp bends and collapsed sections behind walls. Our crew recently handled a duct repair job in a 1920s double-decker on a tight lot off Massachusetts Avenue. The second-floor unit’s return plenum was cut into the original coal furnace casing, and the connection had gaps large enough to pull in attic dust. We sealed the seam with mastic and applied flex duct repair to a collapsed section behind the plaster-and-lath wall, restoring proper airflow. Flex duct repair in Arlington generally runs $220-$420.
Duct Insulation
Arlington sits in the Mystic River watershed, and the low-lying eastern sections near Alewife Brook in 02476 experience elevated ambient humidity that accelerates condensation inside poorly insulated duct runs during summer shoulder months. This creates recurring mold conditions in basement and crawl-space sections that go unnoticed until air quality complaints arise. We install proper duct insulation on uninsulated runs, particularly on supply lines in damp crawlspaces, to stop condensation before it starts. Duct insulation in Arlington typically costs $320-$650 depending on linear footage and access difficulty.
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 Arlington
We specify professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, the same brands serious HVAC contractors use. For Arlington’s older ductwork, this matters. The flexible-shaft equipment from Rotobrush navigates sharp bends in retrofitted systems that rigid tools can’t follow. Nikro’s negative air machines handle the heavy particulate load in century-old ducts without losing suction. We stock common repair parts and mastic compounds locally, so Arlington jobs don’t wait on shipping. Most repairs are completed in a single visit because our trucks carry what Arlington’s older homes actually need.
Common Duct Repair & Sealing Problems We See in Arlington Homes
- Gaps around retrofitted plenum connections to coal-era casings go unsealed, allowing soot and debris to be drawn into the air stream. These junctions were often cut quickly during conversion and never properly sealed, creating a direct path for century-old contaminants into your living space.
- Sharp 90-degree bends in retrofit ducts through plaster-and-lath walls are left unsealed, causing air leaks and energy loss that are hard to detect. The tight clearances in Arlington’s older homes make these runs inaccessible to standard equipment and easy for less-experienced technicians to miss entirely.
- Mastic seals fail prematurely because technicians skip proper surface prep, especially on oil-coated metal from old coal conversion systems. Arlington’s humidity then penetrates the failed seal, accelerating corrosion and creating bigger problems than the original leak.
- Condensation in uninsulated basement and crawl-space runs leads to mold growth, particularly in 02476’s low-lying areas near Alewife Brook. Homeowners notice musty smells or allergy symptoms before they realize the ductwork is the source.
Pricing for Duct Repair & Sealing in Arlington, TX
| Service | Typical Range in Arlington | What’s Included |
|---|---|---|
| Mastic sealing (accessible runs) | $180-$340 | Surface prep, sealant application, camera verification |
| Flex duct repair/replacement | $220-$420 | Collapsed section repair, proper support, airflow test |
| Metal duct repair (spot) | $280-$550 | Corrosion repair, seam restoration, structural patching |
| Duct insulation | $320-$650 | Insulation wrap, vapor barrier, condensation prevention |
| Full system assessment + sealing | $450-$850 | Camera inspection, leak detection, comprehensive sealing |
What drives cost in Arlington is access. Original plaster-and-lath walls, tight crawlspaces in two-family double-deckers, and century-old basement configurations take more time than open-joist new construction. We disclose the full price before lifting a single tool, so the number on the phone is the number on the invoice. No bait coupons, no price changes at the door. We also offer $50 off any repair over $250, a free second opinion on any written estimate, and a permanent 5% senior and veteran discount. Call (844) 685-6342 for your exact quote, estimates are free.
We Also Serve Cities Near Arlington
Our crews work throughout the Dallas-Fort Worth metroplex, including Duct Repair & Sealing in Arlington and neighboring Hurst, Grand Prairie, Bedford, and Haltom City. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office, with technicians serving each community locally. Wherever you are, the same standards apply: upfront pricing, camera-verified results, and our 90-Day Done Right Promise in writing.
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
Yes, if the return plenum was cut into the original casing, that junction is almost certainly leaking and drawing unfiltered air through decades of accumulated soot. We seal these historical connections with proper mastic after surface prep, preventing contaminated air from entering your system. This is one of the most common issues we find in Arlington’s converted two-family homes. Call (844) 685-6342 for a camera inspection, estimates are free.
Yes, our flexible-shaft equipment and compact tools are specifically chosen for the tight clearances in Arlington’s older housing stock. We navigate sharp bends and confined spaces that rigid equipment cannot reach, ensuring complete repair rather than partial fixes. Most flex duct repairs in these tight attics are completed in a single visit. Call (844) 685-6342 to schedule, estimates are free.
Metal duct repair on a 1930s Arlington home starts with camera inspection to assess corrosion, separated seams, and damage from decades of coal soot and conversion debris. We repair or replace damaged sections, reseal joints with proper mastic, and verify airflow restoration. These older systems require patience and the right equipment, not force. Typical metal duct repair in Arlington runs $280-$550. Call (844) 685-6342 for an exact assessment, estimates are free.
Signs include uneven heating or cooling between rooms, higher than expected utility bills, musty odors, or visible gaps at duct joints and plenum connections. In Arlington’s older homes, crawlspace leaks are often hidden behind decades of cobwebs and old insulation. Our camera inspection finds what you cannot see. If we find leaks, we seal with mastic after proper prep, not tape that will fail. Call (844) 685-6342 for a free assessment.
Yes, we install proper duct insulation on uninsulated supply and return lines, particularly in damp basement and crawl-space areas where Arlington’s humidity causes condensation and mold. Insulation stops the condensation cycle that creates recurring air quality problems in older homes. Duct insulation in Arlington typically costs $320-$650. Call (844) 685-6342 for a free estimate and to check if your uninsulated runs are contributing to moisture issues.
We’re here when you need us. Call Bellows Air Duct & Vent Co. at (844) 685-6342 for duct repair and sealing in Arlington. A live person answers 24 hours a day. We’ll give you an honest price before we start, show you camera verification of the work, and back it with our 90-Day Done Right Promise in writing. No bait coupons, no surprises on the bill, and no paperwork if something needs adjustment. We stand behind it because we have for over 42 years.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Arlington and communities across the Dallas-Fort Worth area since 1984.