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.
Fast, Reliable Air Duct Cleaning Across Leesburg
Air duct cleaning in Leesburg, VA typically runs $380-$720 for a full residential system, with most jobs completed in a single visit and a written price delivered before any work begins. CleanRun crews serve Leesburg from our Washington, DC scheduling office, with background-checked technicians arriving in uniform and identified by name. We’ve documented the inside of every duct run in 52,000+ homes since 2013, and that photo record is standard on every Leesburg job, not an upsell.
Leesburg’s position at the rural-suburban fringe of Loudoun County creates a contamination profile we don’t see in denser NoVA suburbs. Prevailing westerly winds off the Blue Ridge push hay dust, mold spores, and agricultural particulates from surrounding horse farms and hay fields directly into residential HVAC intakes. Homes in Lansdowne and Potomac Station, even those with no livestock, routinely show an equine-dander signature in their ductwork. That organic loading, combined with summer humidity regularly above 70% RH, colonizes the long attic duct runs of 1990s-2010s boom-era construction faster than comparable systems in flatter, more urbanized communities like Reston or Herndon. The realistic cleaning interval here is shorter. The contamination is more biologically complex. And a shop vac at the registers won’t touch it.
Call (240) 255-4519 for a written estimate. No “call for pricing.” The number is delivered before a single panel comes off.
Why CleanRun Air Duct Cleaning Rockville Is Leesburg’s Preferred Air Duct Cleaning Company
Our Air Duct Cleaning team has built its reputation in Loudoun County on documentation, not slogans. Every Leesburg customer receives a written price before work starts, a photo record of every duct run before and after, and the 365-Day Done Right Promise backed in writing, not subject to manager approval. Haven Standard Clause 1: Written Price Before Any Work Starts. Haven Standard Clause 3: Verified Crews. These aren’t marketing phrases. They’re operational rules our technicians follow on every dispatch.
Leesburg homeowners research before they call. We built our process for that customer. The equipment roster is published: Rotobrush agitation systems, Nikro HEPA vacuums, Abatement Technologies negative-air machines, Honeywell and Aprilaire filtration components, Guardsman sanitizing agents. You can look up every brand before agreeing to a price. Our license number is on this page, not buried in a footer. All calls are answered by a live person, 24/7, and scheduling is coordinated from our Washington, DC office with crews serving Leesburg locally.
Reviews from Leesburg customers consistently cite the photo record as the deciding factor. One Lansdowne homeowner noted that seeing the hay particulate buildup in her 2005 colonial’s flex runs, captured on camera before a single tool touched the system, made the difference between CleanRun and a competitor who offered only a verbal “trust us.” That documentation practice has been standard since our first job in 2013. No exceptions.
Our Air Duct Cleaning Services in Leesburg

Residential Duct Cleaning
Leesburg’s housing stock splits sharply: pre-Civil War and early-20th-century homes in the Old Town historic district with retrofitted HVAC squeezed into non-standard spaces, and 2,500-5,000 sq ft colonials and craftsmen in planned communities built during the 1990s-2010s Loudoun growth boom. That newer cohort is now 15-25 years old. Large enough for extensive multi-zone duct runs. And for many owners, overdue for a first professional cleaning. Our residential service covers both contexts, with technicians trained on the tight crawlspaces of historic retrofits and the long attic runs of boom-era construction.

Commercial Duct Cleaning
Leesburg’s commercial base includes veterinary clinics near equestrian facilities, agricultural supply offices, and the retail and medical corridors along Route 7 and Route 15. These systems load differently than standard office HVAC. Hay dust and animal dander from adjacent properties enter intake vents at ground level, and the biological contamination profile requires HEPA filtration and source-removal methods, not surface cleaning. We document the commercial photo record with the same rigor as residential jobs, delivered as a standard deliverable.

Supply Duct Cleaning
The supply side pushes conditioned air into living spaces. In Leesburg’s 1990s-2010s homes, these runs often stretch 30-50 feet through attic spaces where summer temperatures exceed 140°F and humidity exceeds 70% RH. That environment promotes mold colonization on the interior surfaces. Our supply duct cleaning uses Rotobrush agitation combined with Nikro HEPA vacuum extraction under negative pressure, so debris is removed from the system, not redistributed through the house. The photo record shows the full length of every supply run, before and after.

Return Duct Cleaning
Return ducts pull air back to the air handler for reconditioning. In Leesburg, these are the primary entry point for agricultural particulates. The return side typically shows heavier loading than supply, and in homes near horse farms or hay fields, the contamination signature includes equine dander and hay particulates even when the homeowner owns no livestock. Return duct cleaning without supply-side attention leaves half the system untreated. We clean both, photograph both, and show you both.

Full System Cleaning
This is our recommended service for Leesburg’s rural-edge properties. Full system cleaning covers supply ducts, return ducts, the plenum (the central distribution box where supply and return meet the air handler), the air handler cabinet, and the evaporator coil. In the humid, particulate-heavy Leesburg environment, partial cleaning often misses the microbial growth on coils and the debris buildup in plenums that drives musty odors and reduced airflow. The full system service includes the complete photo record and the written 365-Day Done Right Promise.

Video Inspection
We deploy video inspection before quoting any Leesburg job where the contamination level is unknown or the homeowner reports musty odors, reduced airflow, or uneven temperature distribution. The camera shows the interior condition of duct runs, flex connections, and coils in real time. That footage becomes part of the documented job record and supports the written price we deliver before work starts. No surprises. No “trust us.” Evidence first.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
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 Leesburg
CleanRun crews arrive with professional-grade equipment from trade-recognized manufacturers. Our vacuum and agitation fleet includes Rotobrush and Nikro systems, with Abatement Technologies negative-air machines for containment on heavy-contamination jobs. Filtration and air quality components draw from Honeywell and Aprilaire product lines, and sanitizing protocols use Guardsman formulations where microbial remediation is indicated. These are not proprietary labels. They’re brands you can research independently, verify specifications, and compare against what other Leesburg contractors deploy. We name them because Haven Standard Clause 1 applies to equipment transparency too.
Common Air Duct Cleaning Problems We See in Leesburg Homes

- Hay particulate and equine dander in homes with no livestock. Prevailing westerly winds carry agricultural particulates from surrounding horse farms and hay fields into HVAC intakes across Lansdowne, Potomac Station, and River Creek. The contamination signature is specific to Leesburg’s western Loudoun setting and rarely appears in duct jobs even a few miles east toward Ashburn.
- Mold colonization in long attic duct runs. Leesburg’s position at the Piedmont-Blue Ridge transition creates a moisture gradient measurably different from flatter, more urban NoVA communities. Summer humidity regularly above 70% RH, combined with attic temperatures exceeding 140°F, promotes microbial growth on the interior surfaces of flex duct and metal trunk lines in 1990s-2010s construction.
- Outbuilding and detached shop systems treated as out of scope. Rural-edge Leesburg properties often have workshops, barn offices, or equipment sheds with independent ductwork or ductless mini-splits. These systems load fastest with unpaved-road dust and wood-heat ash, yet many contractors won’t service them. We clean and document them on the same visit, with the same photo record standard.
- Shop-vac “cleaning” that redistributes rather than removes. Negative-pressure extraction is essential in Leesburg’s high-particulate environment. A shop vac at the register pulls debris into the living space, not out of the system. We see the aftermath: homeowners who paid for cleaning and still have hay dust on their furniture.
Pricing for Air Duct Cleaning in Leesburg, VA
A typical residential full system cleaning in Leesburg runs $380-$720, depending on system size, contamination level, and accessibility. Return-only or supply-only cleaning ranges $220-$420. Commercial systems and multi-zone residential setups start at $580 and scale with square footage and duct complexity. Outbuilding systems on rural properties add $180-$340 per structure when serviced on the same visit.
| Service | Leesburg Price Range |
|---|---|
| Full residential system cleaning | $380 - $720 |
| Return duct cleaning only | $220 - $420 |
| Supply duct cleaning only | $220 - $420 |
| Commercial / multi-zone residential | $580+ |
| Outbuilding system (same visit) | $180 - $340 |
| Video inspection with written report | $85 - $150 |
What moves a Leesburg job toward the higher end: extensive flex-duct runs in attic spaces requiring additional access points, heavy organic loading requiring extended agitation time, microbial remediation with coil sanitizing, and systems that haven’t been cleaned in 15+ years. What doesn’t affect price: number of vents. We price per system, not per register. One flat price per system, agreed in writing before work starts. Haven Standard Clause 1.
Bring a competitor’s written estimate. CleanRun provides a Free Second Opinion at no cost, with our number next to theirs in writing.
We Also Serve Cities Near Leesburg

CleanRun crews cover the full Loudoun-Fairfax corridor, including Air Duct Cleaning in Leesburg and surrounding communities: Ashburn, Sterling, Herndon, and Reston. Each market carries its own contamination profile. Ashburn’s denser suburban construction loads differently than Leesburg’s rural-edge properties. Sterling and Herndon see more commercial mixed-use systems. Reston’s older townhome stock presents access challenges distinct from Leesburg’s boom-era colonials. We adjust equipment and protocol accordingly, with the same written price guarantee and documented photo record on every job.
Serving Leesburg, VA - Our Local Coverage Area
We’re based in the Leesburg 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 - Air Duct Cleaning in Leesburg

Every 2-3 years for rural-edge Leesburg properties, shorter than the 4-5 year interval typical in more urbanized NoVA suburbs. The equine-dander and hay-particulate loading from prevailing westerly winds creates a biologically active contamination profile that accelerates duct degradation and impacts indoor air quality faster than standard household dust. Call (240) 255-4519 for a written assessment of your specific system and interval recommendation.
Prevailing westerly winds off the Blue Ridge carry agricultural particulates from surrounding horse farms and hay fields directly into residential HVAC intakes across Leesburg’s planned communities. We’ve documented this contamination signature in Lansdowne, Potomac Station, and River Creek homes whose owners have no equestrian connection. The material enters through outdoor intake vents and ground-level returns, then distributes through the full duct system. It’s a geographic reality of western Loudoun County, not a mystery.
Yes. Leesburg’s summer humidity regularly exceeds 70% RH, and its position at the Piedmont-Blue Ridge transition creates a moisture gradient measurably different from flatter eastern NoVA communities. That humidity, combined with attic temperatures exceeding 140°F, promotes mold colonization on the interior surfaces of long duct runs common in 1990s-2010s construction. A proper Leesburg duct cleaning must address microbial growth on coils and in plenums, not just debris removal. We include coil inspection and, when indicated, sanitizing as part of our full system service.
Schedule immediately, then every 2-3 years. Those homes were built during Loudoun County’s fastest growth period with extensive multi-zone duct runs now entering their third decade without maintenance. The combination of long attic flex runs, high humidity, and agricultural particulate loading means first-time cleaning on these systems typically reveals significant debris buildup and often coil contamination. The photo record from that first cleaning establishes a baseline for future interval planning. Call (240) 255-4519 for a written estimate and video inspection if you’re unsure of system condition.
Yes, and typically on a shorter interval than the main house. Workshops, barn offices, and equipment sheds on rural-edge Leesburg properties load fastest with unpaved-road dust and wood-heat ash. Their systems are often smaller, run harder, and receive no filtration maintenance. We service outbuilding ductwork and mini-split cassettes on the same visit as the main house, with independent photo documentation and written pricing per structure. Ignoring these systems leaves a contamination source that re-enters the main house on clothing and equipment.
Ready to see what’s actually inside your ducts? Call (240) 255-4519 for a written estimate. Every Leesburg job starts with a price in writing, ends with a photo record of every run, and carries the 365-Day Done Right Promise backed in black and white. No per-vent pricing. No “call for a quote.” Evidence first, always.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Leesburg and Loudoun County since 2013.




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