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 Ashburn
Duct repair and sealing in Ashburn typically costs $280-$780 for most residential jobs, depending on whether you’re addressing isolated flex duct damage or a whole-system mastic re-seal of fiberglass duct board trunks. Most Ashburn homes we assess are scheduled within 48 hours, with written pricing delivered before any ladder touches the attic hatch. Call (240) 771-1508 for a free estimate.
We know Ashburn’s ductwork because we’ve photographed the inside of thousands of runs here since 2013. Dispatch and scheduling are coordinated from our Washington, DC office, but our crews live in Loudoun County and work Ashburn daily. We understand the specific failure patterns in Ashburn Village, Broadlands, and Brambleton tract homes because we’ve documented them, house by house, cul-de-sac by cul-de-sac.
Why CleanRun Air Duct Cleaning Ashburn Is Ashburn’s Preferred Duct Repair & Sealing Company
Our reputation in Ashburn is built on what we can show, not what we claim. Every job starts with a written price under Haven Standard Clause 1 and ends with a Documented Photo Record of every duct run, delivered to you as a standard deliverable. We’ve served 52,000+ homes since 2013, and every one of them received that same written price and photo documentation.
Ashburn customers specifically mention our transparency in reviews. They note that we show the camera footage before quoting, that our technicians arrive in uniform and identify themselves by name before entry under Haven Standard Clause 3: Verified Crews, and that the 365-Day Done Right Promise is printed on their invoice, not just mentioned in passing.
Response time to Ashburn is typically next-day or within 48 hours for standard assessments. We’re not going to manufacture urgency. Duct repair is scheduled work, and we’d rather do it right than do it rushed.
The local knowledge matters. In Ashburn, we know that a Broadlands home built in 2003 and a Brambleton home built in 2005 were likely framed by the same production builder with the same fiberglass duct board specifications. That means we know where to look first, what failure mode to expect, and how to price it accurately without exploratory demolition.
Our Duct Repair & Sealing Services in Ashburn
Duct Sealing with Mastic Sealant
Ashburn’s builder-grade duct systems were often assembled with tape that degrades in attic heat, not mastic. We apply professional-grade mastic sealant to every joint, seam, and penetration in your duct board trunks and metal connections. In Ashburn’s humid Piedmont climate, mastic outlasts tape by a decade or more. A typical mastic re-seal of a full duct system in Ashburn runs $450-$680, quoted in writing before work begins.
Flex Duct Repair
Flex duct repair is our most common service call in Ashburn. The flexible branch ducts installed in 1990s-2000s tract homes collapse at elbows, get crushed by storage in attics, or degrade from the inside out after two decades of moisture cycling. We pulled a collapsed 8-inch flex branch duct out of an attic in Broadlands that had been choked down to about half its diameter since the house was built in 2003, starving a second-floor register. After a camera inspection confirmed the kink and the mummified dust mat, we replaced the run, re-sealed the fiberglass duct board trunk with mastic, and re-balanced the supply and return side with a Honeywell static pressure check. The homeowner said the back bedroom finally stayed cool in August for the first time. Single flex run replacement in Ashburn typically runs $280-$420.
Metal Duct Repair
Where Ashburn homes have galvanized steel trunk lines, usually in basements or crawl spaces, we repair separated seams, corroded sections, and failed dampers. Metal duct repair requires different techniques than flex work: sheet metal patching, proper mechanical fastening, and mastic over all joints. Most metal duct repairs in Ashburn fall between $320-$580.
Duct Insulation
Ashburn’s attics hit 140°F in July, and uninsulated or degraded duct wrap bleeds conditioned air into the attic before it reaches your register. We install fresh fiberglass duct insulation with proper vapor barriers, sealed with mastic at all seams. Full duct insulation in Ashburn typically runs $680-$980 for a standard single-system home, always quoted in writing first.
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 Ashburn
Our equipment roster includes Rotobrush for mechanical agitation in duct runs, Abatement Technologies for negative-pressure extraction, and Honeywell for static pressure verification and airflow balancing. We stock common flex duct diameters, mastic, and duct board repair materials locally, so Ashburn jobs don’t wait on parts. For whole-home air quality integration after sealing, we also work with Aprilaire media filters and Guardsman UV sanitizing equipment. You can look up every brand we name. We don’t use equipment we can’t document.
Common Duct Repair & Sealing Problems We See in Ashburn Homes
- Construction debris left at handover. In Ashburn’s rapidly built tract homes, drywall dust, sawdust, and gypsum chunks were often left in supply and return ducts. This debris clogs registers and creates a lint pathway that accelerates fiberglass duct board liner deterioration. We’ve photographed gypsum chunks the size of golf balls lodged at first elbows in Brambleton homes.
- Interior liner erosion from humid summers. Ashburn’s humid Piedmont summers drive moisture into HVAC systems, especially inside flexible ductwork. After 20-30 years, the interior liner of fiberglass duct board trunks erodes and supports microbial growth, often unnoticed until the blower motor overworks or indoor humidity spikes.
- Identical failures across identical homes. In tightly phased subdivisions like Broadlands, every house on a given cul-de-sac was framed within the same 18-month window by the same production builder, often using identical duct layouts. That means the mold pattern or collapsed flex run found in one home is almost certainly replicated in the neighbor’s attic. We’ve replaced the same failed elbow on three consecutive houses in Ashburn Village.
- Never-professionally-serviced original ductwork. Many Ashburn homes still carry their original, never-cleaned, never-sealed ductwork from the 1995-2012 build wave. The first service call often reveals multiple simultaneous failures: separated mastic, collapsed flex, and debris accumulation that has been building since the Clinton administration.
Pricing for Duct Repair & Sealing in Ashburn, VA
Here’s what duct repair and sealing actually costs in Ashburn’s market:
| Service | Typical Range |
|---|---|
| Single flex duct run repair/replacement | $280-$420 |
| Mastic re-seal of full duct system | $450-$680 |
| Metal duct section repair | $320-$580 |
| Duct insulation (full system) | $680-$980 |
| Combined repair + sealing package | $580-$780 |
What moves you within these ranges: accessibility (crawl space vs. walk-up attic), number of damaged runs, and whether we find construction debris requiring extraction before sealing can begin. Every Ashburn job gets a written price before any work starts, under Haven Standard Clause 1. No per-vent pricing. No teaser coupons. Bring us a competitor’s written estimate and we’ll deliver a Free Second Opinion, our number next to theirs.
We Also Serve Cities Near Ashburn
Our crews work Ashburn daily and also serve Leesburg, Sterling, Herndon, and Chantilly. The same written pricing, documented photo record, and 365-Day Done Right Promise apply in every service area. For our full service hub, visit our Duct Repair & Sealing page.
Serving Ashburn, VA - Our Local Coverage Area
We’re based in the Ashburn 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 Ashburn
Yes. In Ashburn’s 2000s-era tract homes, we routinely find that the builder never properly sealed duct joints with mastic and left construction debris in the runs. Cleaning unsealed ducts just blows debris through leaks into your attic and walls. We inspect first, seal what’s failing, then clean if needed. Call (240) 771-1508 for a camera inspection and written scope.
Because your homes were built by the same production builder within the same 18-month window with identical duct layouts. In Broadlands and Ashburn Village, that same-vintage, never-serviced builder-grade fiberglass ductwork is now 20-30 years old and hitting its first major service milestone simultaneously. We’ve documented the same collapsed flex run, the same mold pattern, on consecutive houses. It’s not coincidence. It’s construction history.
Drywall dust and gypsum debris become abrasive particulate that accelerates liner erosion in fiberglass duct board and creates a lint matrix that traps moisture. In Ashburn’s humid summers, that trapped moisture supports microbial growth. The debris also restricts airflow, forcing your blower motor to work harder and shortening its lifespan. We photograph this on nearly every first-time Ashburn assessment.
We use a combination of camera inspection inside every run, blower-door-assisted pressure testing, and Honeywell static pressure measurement at the air handler. In Ashburn’s standard tract-home layouts, we also know the typical failure points by builder and vintage. The leaks are almost always in the attic, not behind drywall. You’ll see the footage before we quote.
Usually not, but it depends on what we find. Properly sealed ducts handle higher static pressure, so if you’ve been restricted to a low-MERV filter because your system was struggling, sealing may allow a step up. We test with a Honeywell pressure check after sealing and give you a written recommendation. No guesswork.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Ashburn since 2013.