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 Fairfax
Air duct cleaning in Fairfax, VA typically runs $380-$720 for a full residential system and $180-$340 per sub-service depending on home size and duct condition. Most jobs are scheduled within 3-5 business days, with our Air Duct Cleaning crews dispatching from our Washington, DC coordination office to serve Fairfax homeowners directly.
We’ve worked in Fairfax since 2013, and the pattern is consistent: the 1960s colonials and split-levels that dominate neighborhoods like Mantua and Greenfield contain ductwork that is now 50-60 years old. Original fiberglass liner has had decades to degrade. Humidity from the Mid-Atlantic summer has cycled through unconditioned attics and crawlspaces thousands of times. The result is not simply “dirty ducts” - it’s failing duct materials, disconnected runs, and moisture-driven contamination that a standard brush-and-vacuum job won’t touch. Our crews arrive with Rotobrush and Nikro negative-pressure equipment, but more importantly, they arrive knowing what Fairfax homes actually contain.
Call (240) 255-4519 to schedule a free estimate. We’ll deliver a written price before any work starts.
Why CleanRun Air Duct Cleaning Rockville Is Fairfax’s Preferred Air Duct Cleaning Company
Fairfax homeowners research before they buy. They bought into one of the DC metro’s most established suburbs at a high price point, and they expect documentation for that investment. We’ve served over 52,000 homes since 2013, every one with a written price agreed before work began and a Documented Photo Record delivered when the crew left. In Fairfax specifically, that record matters because the problems are structural - delaminated liner, crushed flex duct, unsealed attic connections - and a photo of the inside of the duct run is the only way to prove what was found and what was fixed.
Our technicians are background-checked, uniformed, and identified by name before arrival under Haven Standard Clause 3: Verified Crews. Scheduling is coordinated from our Washington, DC office, with Fairfax routes planned to minimize transit time and respect your calendar. The 365-Day Done Right Promise applies to every job in Fairfax - if the work is not right, we make it right, backed in writing, not subject to manager approval.
We also offer a Free Second Opinion on any written estimate from a competitor. Bring us another company’s quote; we’ll put our number next to it in writing, no charge.
Our Air Duct Cleaning Services in Fairfax

Residential Duct Cleaning
Fairfax’s single-family stock is overwhelmingly 2-3 story colonials and split-levels built between the late 1950s and mid-1980s. Many have never had professional duct cleaning. Our residential service starts with a Video Inspection of the full system, including the return plenum and blower motor, because in these older homes the worst accumulation is often upstream of where standard cleaning begins. We use Rotobrush agitation tools with Nikro negative-pressure extraction, and every duct run is photographed before and after. If we find delaminated fiberglass liner - common in Mantua and Greenfield homes built before 1970 - we document it and quote liner removal and relining under Haven Standard Clause 1’s written pricing protocol.

Commercial Duct Cleaning
Fairfax’s commercial base includes defense contractors, professional services firms, and medical offices along corridors like Route 50 and West Ox Road. These facilities face the same humidity challenges as residential buildings, plus higher occupancy loads that accelerate particulate buildup. Our commercial crews work with Abatement Technologies HEPA-filtered containment systems to protect occupied spaces during cleaning. We schedule around your business hours, deliver the same written upfront pricing, and provide the Documented Photo Record for facility maintenance files.

Supply Duct Cleaning
Supply ducts push conditioned air to your registers. In Fairfax’s original construction, these runs often travel through unconditioned attics in long, multi-branch configurations with original fiberglass liner that has degraded over 40-60 years. Cleaning supply ducts without inspecting the liner condition can actually worsen air quality - agitation tools dislodge synthetic particulate that then circulates through the home. Our supply-side work always includes Video Inspection first. If the liner is intact, we proceed with brush-and-vacuum cleaning. If it’s delaminated, we stop and quote the correct scope.

Return Duct Cleaning
Return ducts pull air back to the HVAC unit. In Fairfax homes that have never been cleaned, the return plenum and blower motor often contain decades of drywall dust, construction debris, and pet dander accumulated since original construction. Cleaning only the supply side and leaving the return untouched violates NADCA standards and wastes your money. Our return duct service includes the full return path: grilles, ductwork, plenum, and blower cabinet. We photograph each stage. The result is a complete system clean, not a partial job.

Full System Cleaning
This is our recommended scope for Fairfax’s older housing stock. A Full System Cleaning covers supply ducts, return ducts, the plenum, blower motor, and coils, with Video Inspection before and after. It also includes assessment of duct sealing and liner condition. In a 1961 split-level off Mantua’s Barkley Drive, our crew found the original fiberglass duct liner had fully separated from the sheet metal in the main supply trunk, shedding particulate into every register and forcing us to pivot from a standard brush-and-vacuum scope to source removal with negative pressure and full liner relining. After sealing the disconnected branch runs in the unconditioned attic, the homeowner’s recurring musty odor complaint finally stopped - a job that started as “just a cleaning” and ended as a ducts-and-sealing project because the real fix was the liner and the air leaks, not the dust.

Video Inspection
Every Full System Cleaning in Fairfax includes Video Inspection as standard. We feed a camera through the full duct network to show you what we see before quoting any work. This is particularly critical in Fairfax’s pre-1980 homes, where the camera often reveals delaminated liner, crushed flex duct, or disconnected attic runs that are invisible from the register side. The video becomes part of your Documented Photo Record. You see what we see. You know what you’re paying for.

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.
- 4
You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in Fairfax
Our equipment roster includes brands customers can verify independently: Rotobrush and Nikro for agitation and negative-pressure extraction, Honeywell and Aprilaire for air quality components, and Abatement Technologies for HEPA containment. We don’t claim performance beyond manufacturer specifications. We do claim that our technicians are trained on this equipment, that it’s maintained to trade standards, and that we bring the right tools for Fairfax’s specific challenges - including liner removal capability that standard duct cleaning vans often lack. Parts and replacement components are stocked for common Fairfax HVAC configurations, so relining and sealing work moves without delay.
Common Air Duct Cleaning Problems We See in Fairfax Homes

- Delaminated fiberglass liner in 1960s colonials. The original fiberglass liner has fully separated from the sheet-metal shell after 50+ years of thermal cycling. A standard agitation-tool pass dislodges more synthetic particulate into the airstream rather than removing it. The correct scope is liner removal and relining, not cleaning.
- Moisture-driven mold in unconditioned crawlspaces and attics. Split-level designs in Mantua and Greenfield route long duct branches through spaces where unsealed joints allow Mid-Atlantic humidity to condense. Mold returns within months unless the moisture source is sealed. Cleaning alone is temporary.
- Crushed or disconnected flex duct in attic runs. Uncased attic connections in original builds appear clean from the register side but dump conditioned air into the attic. The system works harder. The ducts get dirtier faster. Video Inspection finds these before any panels come off.
- Decades of debris caked in return plenums and blower motors. Homes built before duct cleaning became standard practice - most of Fairfax’s stock - contain accumulated construction debris and organic material in the return path. Cleaning only the supply side leaves the source untouched and fails NADCA standards.
Pricing for Air Duct Cleaning in Fairfax, VA
We publish actual ranges because Haven Standard Clause 1 requires a written price before any work starts. For Fairfax’s market, typical costs are:
| Service | Typical Range |
|---|---|
| Supply Duct Cleaning (per system) | $180-$280 |
| Return Duct Cleaning (per system) | $160-$260 |
| Full System Cleaning (residential) | $380-$720 |
| Video Inspection (included with full system) | $95-$145 if standalone |
| Liner Removal & Relining (when found) | $1,200-$2,400 |
| Duct Sealing (per system, when needed) | $450-$890 |
What moves a job within these ranges: home size, duct accessibility, and whether Video Inspection reveals delaminated liner or disconnected runs that require scope expansion. We do not quote per-vent pricing. We do not offer teaser coupon rates. One flat price per system, agreed in writing, before work begins. Every time. Call (240) 255-4519 for a free estimate - we’ll inspect, document, and deliver your written price on the spot.
We Also Serve Cities Near Fairfax

Our crews serve Fairfax homeowners directly, with routes extending to Reston, Herndon, Sterling, and Arlington. Each city’s housing stock presents different patterns: Reston’s 1970s-90s planned communities have newer duct materials but unique multi-level designs; Herndon’s mix includes townhome clusters with compact duct networks; Sterling’s exurban builds often feature longer attic runs. We adjust our scope and equipment to what we find, documented on arrival, priced in writing before work starts.
Serving Fairfax, VA - Our Local Coverage Area
We’re based in the Fairfax 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 Fairfax

You’ll likely find original fiberglass duct liner that has begun delaminating from the sheet-metal shell, plus decades of accumulated debris in the return plenum and blower motor. In Mantua homes of that era, we routinely document 50-plus years of buildup, including construction debris from original build-out. The Video Inspection will show you exactly what condition your system is in before we quote any work. Call (240) 255-4519 to schedule - estimates are free.
Fairfax’s dominant housing stock is 20-40 years older than Reston’s, with original duct materials that have reached end of functional life. The fiberglass liner in a 1965 colonial has undergone 60 years of thermal cycling and humidity exposure; the equivalent material in a 1995 Reston build has not. Additionally, Fairfax’s older subdivisions like Mantua and Greenfield were constructed before duct cleaning was standard practice, so many systems have never been serviced. The result is deeper accumulation and more frequent structural failures that require intervention.
Cleaning alone will not fix a musty smell if the source is moisture infiltration through unsealed joints in unconditioned spaces. In Greenfield ramblers, we frequently find that Mid-Atlantic humidity has condensed inside attic supply runs, creating chronic mold-growth conditions. The correct scope includes cleaning the contaminated ductwork, sealing the joints that allow moisture entry, and in some cases replacing degraded liner. We diagnose this with Video Inspection before quoting. The musty smell stops when the moisture source is eliminated, not just when the visible mold is removed.
A Full System Cleaning covers supply ducts, return ducts, plenum, blower motor, and coils, with Video Inspection of every run. For a split-level with original ductwork, we specifically inspect for delaminated liner in the multi-level trunk lines, crushed flex duct at attic transitions, and unsealed joints in crawlspace branches. If the liner is intact, we proceed with Rotobrush agitation and Nikro negative-pressure extraction. If it’s degraded, we quote liner removal and relining, plus duct sealing to address the moisture infiltration that caused the failure. The Documented Photo Record shows you every stage.
We use Video Inspection. A camera fed through the duct network reveals crushed sections, disconnections, and liner degradation without invasive access. In Fairfax’s original construction, we often find that attic flex-duct connections have separated at the collar, dumping conditioned air into the unconditioned space. The camera shows this clearly. We mark the location, quote the repair in writing, and perform the work through existing access points where possible. No exploratory demolition. Call (240) 255-4519 to schedule your inspection.
Ready to see what’s actually inside your ducts? Call CleanRun Duct Repair & Cleaning at (240) 255-4519 for a free estimate in Fairfax. We’ll deliver a written price before any work starts, document every duct run with before-and-after photography, and back the result with our 365-Day Done Right Promise.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Fairfax since 2013.




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