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 Vienna
Duct repair and sealing in Vienna, VA typically costs $280-$680 for most homes, with full flex duct liner replacement running $1,200-$2,400 depending on the number of runs and access conditions. We dispatch crews to Vienna from our Washington, DC coordination office, and most appointments are scheduled within two to three business days. Call (240) 771-1508 for a written estimate before any work begins.
We’ve worked in Vienna long enough to know the difference between a 1978 split-level off Maple Avenue and a 2015 infill near the Metro. The housing stock here tells a specific story, and that story shows up inside the ductwork. Our Duct Repair & Sealing team carries the equipment and documentation protocols to handle what we actually find, not what a coupon ad promises.
Why CleanRun Air Duct Cleaning Ashburn Is Vienna’s Preferred Duct Repair & Sealing Company
CleanRun has been independently owned and operated under the Haven Standard since 2013. We’ve served more than 52,000 homes, every one with a written price before work started and a documented photo record when the crew left. Vienna homeowners make up a significant share of our Northern Virginia work, particularly in the neighborhoods between Church Street and the Washington & Old Dominion Trail where the 1960s-1980s build-out left a specific legacy in the walls.
Our reputation here is built on what we can show, not what we claim. The 365-Day Done Right Promise is backed in writing on every job, not just stated in marketing copy. If the work is not right, we make it right. Haven Standard Clause 1 requires a written price before any work starts, every time, with no exceptions. Haven Standard Clause 3, Verified Crews, means our technicians are background-checked, uniformed, and identified by name before arrival.
We coordinate scheduling from our Washington, DC office, which keeps our response time to Vienna consistent without the overhead of a satellite location that would need to be priced into every job. Crews arrive with professional-grade equipment from Rotobrush, Abatement Technologies, Aprilaire, and Guardsman, brands customers can verify independently.
Our Duct Repair & Sealing Services in Vienna
Flex Duct Repair
Vienna’s 1960s-1980s residential core is where we see flex duct failure most acutely. The original fiberglass-lined flexible ductwork installed during the post-war Fairfax County build-out degrades differently than metal. In Vienna’s persistently humid summers, with dewpoints regularly above 70°F, that fiberglass liner breaks down, shreds, and recirculates through living spaces. We were called to a 1970s split-level near Church Street where the homeowners had replaced the furnace in 2005 but the original fiberglass flex duct was still in place. Our camera inspection revealed the inner liner had collapsed and was shredding into the supply ducts, recirculating glass fibers through the registers. We performed a full liner replacement with R-8 flex duct, sealed all joints with mastic, and restored proper airflow to the second-floor bedrooms. A typical flex duct repair or partial replacement in Vienna runs $340-$780 per run.
Duct Sealing
Air leaks at duct joints and transitions waste 20-30% of conditioned air in a typical Vienna home, according to Department of Energy estimates. The problem is worse in split-level and ranch homes where 1990s or 2000s air handlers connect to original galvanized-steel or early flex ductwork. The transitions were often sealed with tape that has dried and failed. We seal with mastic sealant, a water-based compound that remains flexible and is rated for the temperature cycling of Northern Virginia’s four-season climate. Mastic sealing of accessible joints in a Vienna home typically costs $280-$520. We photograph every sealed joint before and after.
Metal Duct Repair
Galvanized-steel ductwork in Vienna’s older homes corrodes at seams and low points where condensation collects. The dense tree canopy that makes Vienna’s streets distinctive, maples and oaks actively preserved by town ordinance, also means exterior intakes and return grilles accumulate heavy pollen and organic debris loads each spring. That debris traps moisture inside metal runs. We repair or replace corroded sections, re-insulate where needed, and document the interior condition with before-and-after photography. Metal duct repair in Vienna typically ranges $420-$890 depending on access and extent.
Duct Insulation
Unconditioned attic and crawl-space duct runs are common in Vienna’s ranch and split-level homes. In summer, when attic temperatures exceed 130°F and crawl spaces hold humidity from the clay-heavy Fairfax County soils, uninsulated or poorly insulated ducts lose capacity and sweat. We install R-8 insulation on flex replacements and add insulation wraps to existing metal runs where accessible. Duct insulation work in Vienna typically runs $380-$720. Every job includes a written scope and photo 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 Vienna
Our equipment roster includes Rotobrush for mechanical agitation, Abatement Technologies for negative-pressure containment, Aprilaire for humidification and filtration components, and Guardsman for sealants and coatings. These are trade-recognized brands, not proprietary systems, which means customers can research specifications independently before agreeing to a price. We stock common flex duct diameters, mastic, and insulation materials on our Vienna-area trucks to avoid return-trip delays. If a job requires a specialized component, we source from regional distributors in Fairfax County with next-day availability in most cases.
Common Duct Repair & Sealing Problems We See in Vienna Homes
- Collapsed fiberglass-flex liner in 1970s ductwork. Original liner shreds and recirculates particles through registers. This requires full liner replacement, not cleaning. We find this routinely near Church Street and the W&OD Trail corridor.
- Condensation and mold on unconditioned duct runs. Vienna’s humid summers and clay soils create persistently damp crawl spaces and attics. Mold colonizes interior duct surfaces, particularly at low points and seams.
- Mismatched system transitions leaking air. A 2002 air handler connected to 1978 galvanized ductwork with failing tape seals. The homeowner pays for conditioned air they never feel.
- Shared dryer vent stacks in dense developments. Lint pathways bypass individual unit maintenance. Blockages create fire risk and back-pressure that damages connected ductwork.
Pricing for Duct Repair & Sealing in Vienna, VA
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts. Here is what duct repair and sealing typically costs in Vienna’s market:
| Service | Typical Range |
|---|---|
| Mastic sealing of accessible joints | $280-$520 |
| Flex duct repair / partial replacement (per run) | $340-$780 |
| Full flex duct liner replacement (whole system) | $1,200-$2,400 |
| Metal duct repair / section replacement | $420-$890 |
| Duct insulation (accessible runs) | $380-$720 |
| Air leak detection and sealing (whole system) | $480-$920 |
Factors that move a job higher in the range: limited attic or crawl-space access, multiple stories, concealed ductwork behind finished ceilings, and the need for containment during occupied-hours work. Factors that keep costs down: open basement or garage access, single-story ranch, and scheduling during our standard weekday hours. We deliver a written price on site before any panel comes off. Bring a competitor’s written estimate and we’ll provide a Free Second Opinion at no cost.
We Also Serve Cities Near Vienna
Our crews work throughout Fairfax County and the inner Northern Virginia corridor. We regularly schedule Duct Repair & Sealing in Vienna alongside appointments in Falls Church, Burke, Annandale, and Fairfax. Dispatch from our Washington, DC office keeps routing efficient across all five markets.
Serving Vienna, VA - Our Local Coverage Area
We’re based in the Vienna 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 Vienna
The original fiberglass-lined flex duct installed in Vienna’s 1960s-1980s housing stock degrades from the inside out, particularly in Fairfax County’s humid summers where dewpoints stay above 70°F for weeks at a time. By the time airflow drops or particles appear at registers, the liner has often collapsed or crumbled. Cleaning cannot restore structural integrity to shredded fiberglass. We assess with a camera first and show the homeowner what the inside actually looks like before recommending replacement. Call (240) 771-1508 to schedule an inspection with written pricing.
We coordinate building access and parking permits through the property management before arrival, not after the truck is on site. Our crews carry containment equipment sized for tight mechanical rooms and common hallways. Haven Standard Clause 3 requires advance crew identification and background verification, which most Vienna condo associations require anyway. We schedule during building-approved hours and leave the photo record with both the unit owner and the property manager.
Shared stacks mean one unit’s lint accumulation affects multiple households, and individual cleanings are often ineffective if the blockage is in the common riser. We inspect the full stack with a camera when possible and coordinate with building management for common-area access. The repair scope is written to distinguish unit-side work from common-area work, with pricing for each. This prevents the partial-fix problem where a unit owner pays for cleaning while the shared blockage remains.
Most accessible leaks in split-level homes can be sealed through basement, crawl-space, or attic access without cutting finished walls. We use mastic and mechanical fasteners at joints and transitions, working from the nearest access point. If a leak is concealed behind a finished ceiling, we document the location with the camera and present options: targeted access with repair, or sealing from the nearest accessible point if the leak is at a joint rather than a mid-run puncture. The written scope specifies exactly what access is required before any work begins.
Vienna’s preserved mature oaks, maples, and cherries produce significant pollen and leaf debris loads that accumulate at exterior intakes and return grilles. This debris traps moisture and introduces organic material into the duct system, accelerating corrosion on metal runs and providing a growth medium for mold on interior surfaces. During repair work, we inspect and clear intake pathways, and we document exterior conditions in the photo record so homeowners can see the connection between tree canopy maintenance and duct system health.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Vienna and Northern Virginia since 2013.