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 Arlington
Most duct repair calls in Arlington fall into one of two categories: a flex duct collapse in a 1950s Barcroft crawl space, or a shared dryer vent stack backing up through a Rosslyn-Ballston high-rise. We’re familiar with both. CleanRun dispatches crews to Arlington from our Washington, DC office, and we schedule around the parking restrictions and building access protocols that come with dense inner-suburb work. Call (240) 318-7712 for a written estimate before any work starts.
Why CleanRun Air Duct Cleaning Alexandria Is Arlington’s Preferred Duct Repair & Sealing Company
We’ve worked in Arlington long enough to know that a “standard duct cleaning” on Columbia Pike rarely stays standard once the camera goes under the house. Our Duct Repair & Sealing team has documented photo records from over 1,200 Arlington jobs since 2013, and we can reference specific failure patterns by neighborhood: the crushed flex at Barcroft joists, the soffit condensation in Alcova Heights, the shared-stack lint backups in Ballston high-rises.
Arlington homeowners leave reviews citing the same two details: the written price that never changed, and the photo record showing what was actually inside their ducts. Haven Standard Clause 1 requires both. Our technicians are background-checked and uniformed (Clause 3: Verified Crews), and we publish our license number on every estimate, not buried in a footer.
We coordinate scheduling from our DC office, which keeps response times to Arlington under 48 hours for standard bookings. Emergency calls for active water intrusion or complete duct collapse get same-week priority.
Our Duct Repair & Sealing Services in Arlington
Flex Duct Repair
Arlington’s post-WWII brick ranchers along Columbia Pike and Barcroft were retrofitted with flex duct in the 1970s-80s, and that flex frequently kinks or partially collapses in perpetually damp crawl spaces. Our technicians routinely arrive for a standard cleaning and instead perform a duct-integrity assessment with camera inspection before any source removal can begin. When we find crushed flex against a soil-covered joist, we rebuild the run with insulated metal duct, sealed at every joint with mastic sealant. A property manager in Aurora Highlands called us after a second-floor return started whistling and the air handler’s blower motor was drawing high amps; under the house we found 1970s-era flex duct collapsed at a ninety-degree bend where it had been crushed against a soil-covered crawl-space joist. We rebuilt the run with insulated metal duct, sealed every joint with mastic sealant, and re-balanced supply and return ducts to the 1940s Cape Cod’s original registers. Blower amps dropped back to nameplate rating and the whistle disappeared.
Duct Sealing
Supply ducts in Alcova Heights mid-century homes run through under-insulated soffits and closets where July-August dewpoints of 70-75°F produce seasonal condensation. Sealing with mastic without first drying and insulating the run traps moisture and accelerates mold colonization. Our sealing protocol starts with a moisture reading, then addresses the thermal boundary before applying mastic sealant to joints and seams. We document every sealed joint with before-and-after photos.
Metal Duct Repair
Older Arlington homes with galvanized steel ductwork, common in 1960s garden apartments near Pentagon City, develop seam separation and rust-through where condensation pools. We cut out damaged sections, fabricate replacement runs on-site, and seal with professional-grade mastic. For homes with asbestos-containing duct tape (common in pre-1980 Arlington construction), we follow Virginia DEQ notification protocols and use Abatement Technologies containment equipment during repair.
Duct Insulation
Arlington’s Potomac River lowland humidity makes uninsulated crawl-space ductwork a mold risk, not just an efficiency problem. We install closed-cell foam or foil-faced fiberglass insulation on repaired runs, with vapor barriers rated for the 70-75°F dewpoints this county sees every summer. Insulation work is photographed and included in the standard job record.
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 Arlington
Our equipment roster includes Honeywell, Aprilaire, and Abatement Technologies - brands customers can verify independently. We stock mastic sealant, insulated flex, and rigid duct fittings sized for Arlington’s common retrofit configurations, which means most Columbia Pike or Barcroft jobs don’t wait on parts. For high-rise fan-coil units along the Rosslyn-Ballston corridor, we carry Guardsman coil-cleaning chemicals and Honeywell media filters compatible with the individual units found in those buildings.
Common Duct Repair & Sealing Problems We See in Arlington Homes
- Flex duct collapse in damp crawl spaces. In Barcroft and along Columbia Pike, 1970s-80s retrofitted flex duct has kinked or partially collapsed against damp joists after decades of seasonal humidity. Source removal is impossible until the run is rebuilt with rigid insulated duct.
- Shared-stack lint backup in high-rises. Condo buildings along the Rosslyn-Ballston corridor share dryer vent stacks between units. A restriction in one unit backs lint into neighboring units, requiring camera inspection of the full stack before any cleaning can be signed off.
- Seasonal mold at soffit duct joints. Mid-century brick homes in Alcova Heights have supply ducts in under-insulated soffits where July-August condensation feeds mold colonization. Sealing without drying and insulating first traps moisture inside the system.
- Seam separation in aging galvanized duct. 1960s garden apartments near Pentagon City show rust-through and seam gaps where decades of condensation have degraded the metal. Repair requires section replacement, not tape.
Pricing for Duct Repair & Sealing in Arlington, VA
A typical flex duct repair in Arlington runs $340-$680 per run, depending on crawl-space access and whether the joist bay needs reframing. Duct sealing with mastic on a standard single-family system runs $280-$520. Full duct insulation for a retrofitted Cape Cod crawl space runs $890-$1,400. High-rise shared-stack camera inspection and lint remediation runs $220-$380 per unit, with building-wide stack pricing available for property managers.
What moves the number: crawl-space clearance (some Barcroft foundations have 18-inch clearance), extent of water damage to surrounding framing, and whether asbestos-containing materials require abatement protocol. Every estimate includes a written price before any work starts, per Haven Standard Clause 1. No per-vent pricing. No coupon bait. Call (240) 318-7712 for an exact quote - estimates are free.
We Also Serve Cities Near Arlington
Our crews work throughout Northern Virginia, including Duct Repair & Sealing in Arlington plus Falls Church, Alexandria, Vienna, and Springfield. Scheduling and dispatch are coordinated from our Washington, DC office.
Serving Arlington, VA - 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
No. Cleaning an isolated section of a shared stack without inspecting the full vertical run risks pushing lint into neighboring units and creating a fire hazard. We camera-inspect the full stack from roof cap to lowest unit, then clean with negative-pressure extraction and provide a building-wide sign-off report. Call (240) 318-7712 to schedule a stack assessment.
It needs camera inspection first. Flex duct from 1980s retrofits in Aurora Highlands frequently shows kinking, collapse, or rodent damage in crawl spaces that makes source removal ineffective until the run is rebuilt. We photograph the full system before quoting repair versus cleaning. Call (240) 318-7712 to book an assessment.
Arlington’s 70-75°F July-August dewpoints produce condensation in under-insulated ductwork, especially in Alcova Heights and Barcroft homes with supply runs through soffits or crawl spaces. That moisture feeds mold at joints and registers. The fix is sealing the thermal boundary with insulation, then sealing ducts with mastic - not just cleaning. Call (240) 318-7712 for a moisture and mold assessment.
We service both. Rosslyn-Ballston corridor high-rises typically use individual fan-coil units with limited duct runs, not central systems. Our scope for these includes coil cleaning, filter replacement with Honeywell or Aprilaire media, and duct sealing on the short flex connections between unit and ceiling plenum. We do not service the building’s chilled-water loop - that’s building maintenance.
We confirm building access protocol 24 hours ahead, including loading dock times for high-rises or street-parking permits for Columbia Pike rowhouses. Technicians arrive uniformed and identified by name per Haven Standard Clause 3. The written price is delivered before any panel comes off. Crawl-space work requires clear access to the hatch; we photograph the space before entering and the full repair before closing. The documented photo record is delivered within 48 hours.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Arlington since 2013.