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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Before
AfterFast, Reliable Duct Repair & Sealing Across Reston
Duct repair and sealing in Reston typically runs $340-$780 for most residential jobs, with flex duct replacement in shared cluster chases landing at the higher end and single-register mastic sealing at the lower. Our crews work Reston’s original townhome villages and newer high-rises weekly, and we quote every job in writing before a panel comes off. Call (571) 487-7204 for a free estimate with a written price delivered the same visit.
We’ve been routing crews to Reston since 2013, and the work here is different from Herndon or Sterling. The planned-community design that made Reston famous - cluster housing around common green space, compact mechanical chases, grade-level returns tucked beneath preserved woodland - creates duct failures you don’t see in conventional subdivisions. Our technicians know the RA building access protocols, the restricted parking around Lake Anne and Hunters Woods, and the difference between a 1972 flex run and a 2019 high-rise VAV system. Dispatch and scheduling are coordinated from our Washington, DC office; the truck that arrives at your Reston door is already loaded for the specific housing era it’s heading to.
Why CleanRun Air Duct Cleaning Leesburg Is Reston’s Preferred Duct Repair & Sealing Company
Reston homeowners have left us reviews mentioning the same thing repeatedly: they chose us because we showed them photos of their actual ductwork before quoting a price. Our Duct Repair & Sealing team has documented over 52,000 homes since 2013, and the photo record is included on every visit, not sold as an upgrade. In Reston specifically, we’ve built a reputation for working within the Reston Association’s access restrictions and parking limitations without charging “difficult access” fees - the written price is the written price, per Haven Standard Clause 1.
Tomas Reyes leads every operational decision, and our Reston customers know his name before the crew arrives. Technicians are background-checked, uniformed, and identified by name before arrival - Haven Standard Clause 3: Verified Crews. The 365-Day Done Right Promise applies in Reston exactly as it does everywhere else: if the work is not right, we make it right, backed in writing on every job, not subject to manager approval.
Our response time to Reston is typically next-day or within 48 hours for non-emergency sealing and repair work. We don’t manufacture urgency. Duct repair is scheduled, assessed, and documented - not rushed.
Our Duct Repair & Sealing Services in Reston
Flex Duct Repair
Reston’s original cluster townhomes and garden condos - the 1964-1985 stock that defines neighborhoods like Lake Anne and Hunters Woods - were built with flex duct routed through shared mechanical chases barely wide enough for a technician’s shoulders. After 40-60 years, that flex sags, the inner liner tears at elbows, and the insulation jacket compresses. We remove the failed run, seal the chase penetration with mastic, and install new flex rated for the static pressure of your system. In one Hunters Woods job, our tech traced a chronic winter condensation problem to original flex collapsed behind a bedroom register - the camera showed the inner liner shredded and pulled loose at a 90-degree bend. We removed the failed run, sealed the chase penetration with mastic, reinsulated the new flex, and resealed the trunk with Guardsman mastic under negative pressure; the supply and return ducts held static pressure on the second test.
Mastic Sealant Application
Metal trunk joints in Reston’s older garden condos and mid-rises lose mastic over decades. Leaks at the air handler plenum pull humid summer air into the system, and joints between duct sections whistle under pressure. We apply Guardsman mastic - a water-based duct sealant that remains flexible after curing - to every accessible joint, then verify with a static pressure test. The work is photographed before and after, and the photo record is delivered as part of your standard job documentation.
Air Leak Repair
Grade-level exterior return grilles in Reston’s original cluster villages sit beneath the RA-maintained hardwood canopy, pulling in decomposed leaf litter and forest-floor mold spores along with oak and tulip poplar pollen. This debris profile is more typical of a cabin in the woods than a Northern Virginia suburb, and it accelerates wear on blower motors while masking leaks that should have been sealed years ago. We locate leaks with pressure testing and smoke pencils, seal with mastic or mechanical fasteners as appropriate, and document the before-and-after pressure differential. The result is air that moves through the duct, not into the crawlspace.
Duct Insulation
Northern Virginia’s humid summers create condensation risk inside older, poorly insulated flex duct runs. In Reston, the RA-protected tree canopy keeps properties shaded and soils damp longer into the season, sustaining higher ambient humidity around exterior HVAC equipment and return-air intakes than in more open neighboring communities. We replace degraded insulation jacketing or add closed-cell wrap where the existing R-value has compressed to nothing. Every insulation job includes a photo of the measured thickness before and after.
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.
Before
AfterTrusted Brands We Service in Reston
Our equipment roster includes Rotobrush for mechanical agitation in tight Reston chases, Abatement Technologies for negative-pressure containment during flex replacement, and Guardsman mastic for sealing metal joints and chase penetrations. We don’t invent performance claims beyond manufacturer specifications - you can look up each brand independently. For Reston customers, this means parts and materials are stocked for same-week completion on most jobs, not ordered after a return visit. The brands are named on your written scope before work starts, so you know what you’re paying for.
Common Duct Repair & Sealing Problems We See in Reston Homes
- Original flex duct in shared cluster chases sags and tears its inner liner. Supply and return ducts leak into crawlspaces instead of delivering air to rooms. We find this weekly in Lake Anne and Hunters Woods townhomes built between 1968 and 1982.
- Grade-level exterior return grilles beneath RA-maintained canopy pull in leaf litter and mold spores. The debris chokes air handlers and shortens blower motor life, while the homeowner assumes the problem is the HVAC unit itself.
- Aging metal trunk joints in garden condos lose mastic over 40-60 years. Leaks at the air handler plenum pull humid summer air into the system, raising cooling costs and encouraging microbial growth on the coil.
- Shared dryer vent stacks in cluster housing accumulate lint where flex transitions meet rigid duct. The restriction backs up heat and moisture into the laundry space, and in some RA villages the shared stack runs through the same chase as HVAC ductwork, complicating access and sealing.
Pricing for Duct Repair & Sealing in Reston, VA
A typical single-register mastic sealing job in Reston runs $180-$280. Flex duct replacement in a shared cluster chase - the most common major repair we do in original townhome villages - typically runs $450-$780 depending on chase length and access. Full trunk sealing with pressure testing on a garden condo or mid-rise unit runs $620-$940. These are whole-system prices, not per-vent teaser rates that balloon once the truck is on your drive.
What moves the price: chase access difficulty (some RA villages require coordination with building management), the number of failed flex runs, whether the plenum itself needs resealing, and whether insulation replacement is bundled. We deliver a written price before any work starts, every time, under Haven Standard Clause 1. No exceptions. Bring a competitor’s written estimate and we’ll put our number next to it - our Free Second Opinion costs nothing.
| Service | Typical Range in Reston |
|---|---|
| Single-register mastic sealing | $180 - $280 |
| Flex duct replacement (shared chase) | $450 - $780 |
| Full trunk sealing with pressure test | $620 - $940 |
| Duct insulation replacement (per run) | $220 - $380 |
We Also Serve Cities Near Reston
Our crews work throughout Fairfax and Loudoun counties, including Reston‘s immediate neighbors: Herndon to the west, Great Falls to the north, Sterling to the northwest, and Vienna to the south. Each city has distinct housing stock and duct configurations, and our pricing reflects local conditions, not a one-size-fits-all menu.
Serving Reston, VA - Our Local Coverage Area
We’re based in the Reston 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 Reston
Yes, in nearly every case we access the chase through existing register openings or the air handler closet, not through drywall. We use a borescope camera to locate the failure, then pull new flex through the existing path. The Hunters Woods job we described above - shredded inner liner at a 90-degree bend - was completed through the bedroom register and a closet access panel, with zero wall repair. Call (571) 487-7204 and we’ll scope the chase to confirm your access path before quoting.
Most Reston condo renovations update kitchens and baths while leaving original ductwork untouched. The metal trunk and plenum joints behind your new cabinets are still 40-60 years old, and the mastic has dried to dust. We photograph these hidden leaks regularly in renovated units around Reston Town Center’s older garden-style buildings. The renovation looks great; the ductwork behind it doesn’t know anything changed.
Duct sealing addresses the HVAC system, not the dryer stack, but we often find the two problems intersect. In Reston’s cluster housing, shared dryer stacks sometimes run through the same mechanical chase as HVAC ductwork, and leaks in the HVAC return can pull lint and moisture from a compromised dryer transition. We can seal the HVAC ductwork and flag dryer stack issues for your building management or our dryer vent team. The photo record shows exactly what we found where.
The high-rise mixed-use buildings around Wiehle-Reston East (2013) and Reston Town Center Metro (2022) use commercial-grade VAV - variable air volume - systems with entirely different access protocols, pressure requirements, and fire-rated dampers. Our technicians carry the certifications and equipment for these systems, but the repair approach is not interchangeable with 1970s flex duct. We assess the system type before quoting, and the written scope specifies exactly what we’re accessing.
Yes. We coordinate with Reston Association management for cluster village access and obtain parking permits where required. Our crews arrive in marked vehicles with license and insurance documentation ready, and we schedule around RA maintenance windows when necessary. There is no “difficult access” surcharge - the written price is the written price, per Haven Standard Clause 1.
Ready to see what’s actually inside your ductwork? Call (571) 487-7204 for a free estimate. We’ll deliver a written price before any work starts, document every duct run with before-and-after photos, and back the work with our 365-Day Done Right Promise.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Reston since 2013.