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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After
Before
After
Before
AfterAir Duct Cleaning in Chantilly, VA
HVAC cleaning in Chantilly typically runs $400-$800 for a whole-system job, with air quality and sanitizing services adding $200-$600 depending on whether mold treatment or UV installation is needed. Most Chantilly homes we work on are 3,000-5,000 square foot colonials built during the Dulles corridor boom, with multi-zone systems that collect more debris than their owners expect. Call (571) 520-6317 for a written estimate before any work starts.
CleanRun crews have photographed the inside of ductwork in Chantilly subdivisions since 2013, and the pattern is consistent: original flex-duct and duct-board plenums installed by regional production builders are now hitting 20-35 years of humid cycling, with delaminating fiberglass facing and debris loads accelerated by construction particulate from Data Center Alley expansion. Our home base is Washington, DC, but dispatch and scheduling are coordinated from our metro office and crews serve Chantilly locally.
Why Chantilly Homes Are Different
Chantilly sits at the epicenter of the Dulles Technology Corridor construction boom that produced thousands of large colonial and executive-style homes, most 3,000-5,000 sq ft, between the late 1980s and mid-2000s. That means a dense concentration of aging flex-duct and duct-board HVAC systems are simultaneously hitting the 20-35 year deterioration window. Ongoing commercial construction throughout the Route 28/Route 50 corridor, including relentless data-center development that has made this area “Data Center Alley,” continuously generates fine construction particulate that infiltrates nearby residential duct systems, accelerating debris buildup far beyond what comparable suburban markets experience.
Western Fairfax County’s position between the Blue Ridge foothills and the Potomac watershed keeps summer relative humidity persistently above 65-75%, creating ideal interior duct conditions for mold and mildew colonization on deteriorating duct board, especially in homes where oversized HVAC systems short-cycle and leave ducts damp. Chantilly also sits in a high-pollen corridor for oak, cedar, and bluegrass, meaning air handlers pull heavy particulate loads through filters and into duct interiors every spring. Technicians working the subdivisions along Stringfellow Road and the Westfields-area communities regularly find that original late-1990s duct board has begun delaminating its inner fiberglass facing, turning a routine cleaning call into a mandatory encapsulation or duct-liner replacement conversation before the job is even quoted.
Our Main Chantilly Services
Chantilly homeowners call CleanRun most often for these three services, each with its own dedicated page and pricing:
Air Duct Cleaning in Chantilly
Full-system negative-pressure extraction of every duct run, register, and return, with a documented photo record of each before and after. In Chantilly, the sheer square footage and three-to-four zone complexity of these colonial-era systems makes jobs significantly more labor-intensive than work in DC’s older rowhouse neighborhoods. We regularly find construction dust from nearby data center builds layered with pollen debris in attic flex runs. Air Duct Cleaning in Chantilly covers complete pricing and what the photo record includes.
Dryer Vent Cleaning in Chantilly
Dryer vent routing in Chantilly’s large-format homes often runs 15-25 feet through finished basement ceilings or exterior wall chases, with multiple elbows that trap lint. Our crews use Rotobrush and Nikro equipment to clean the full run from appliance to termination, then photograph the interior condition. Blocked vents in these longer runs are a documented fire hazard and efficiency killer. Dryer Vent Cleaning in Chantilly has full details.
Duct Repair & Sealing in Chantilly
When the camera shows delaminating duct board at the first elbow, as it regularly does in Stringfellow Road-area homes, repair becomes part of the conversation. We replace failed flex joints, seal plenum seams with mastic, and encapsulate deteriorating fiberglass facing. Every repair scope is written and priced before work begins. Duct Repair & Sealing in Chantilly explains the full process.
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.
BeforeAfterHVAC Cleaning in Chantilly
HVAC cleaning in Chantilly addresses a specific problem: multi-zone systems in 3,000-5,000 sq ft colonials that have run for 20-35 years with evaporator coils caked in pollen debris and blower wheels throwing imbalanced loads. The combination of high humidity, heavy pollen, and construction particulate means components here deteriorate faster than in comparable Loudoun County markets. HVAC Cleaning covers our full equipment roster and process standards.
Evaporator Coil Cleaning
Signs you need it
Ice formation on the coil, weak airflow from registers, or the system running continuously without reaching setpoint.
What it costs in Chantilly
Evaporator coil cleaning in Chantilly typically ranges $250-$450 depending on accessibility and whether the coil requires chemical treatment for mold.
How we do it
We remove the access panel, apply foaming cleaner to the coil fins, rinse with low-pressure water, and photograph the before and after condition for the job record.
Blower Cleaning
Signs you need it
Vibration or noise from the air handler, uneven airflow between zones, or dust puffing from registers when the system cycles on.
What it costs in Chantilly
Blower wheel and housing cleaning in Chantilly typically runs $200-$350, with additional cost if the motor requires removal for access.
How we do it
We remove the blower assembly, clean the wheel blades and housing with compressed air and solvent, balance the wheel, and reinstall with a photo record of the cleaned condition.
What HVAC Cleaning Costs in Chantilly
| Item | Typical range in Chantilly |
|---|---|
| Evaporator coil cleaning | $250-$450 |
| Blower cleaning | $200-$350 |
| Full system HVAC cleaning (coil + blower + air handler) | $400-$800 |
How do I know my HVAC needs cleaning versus just the ducts?
If rooms heat or cool unevenly, the system runs longer than it used to, or you hear vibration from the air handler, the problem is likely in the HVAC components, not the duct runs. Call (571) 520-6317 and we’ll inspect both.
Can HVAC cleaning fix short-cycling in Chantilly’s humid summers?
A dirty evaporator coil or blower can cause short-cycling, but oversized systems common in Chantilly’s production-built homes may need duct modification too. We diagnose before quoting.
Air Quality & Sanitizing in Chantilly
Air quality and sanitizing in Chantilly targets mold, bacteria, and persistent odors that thrive in the 65-75% summer humidity of western Fairfax County, especially in homes with delaminating duct board or flex joints that leak conditioned air into hot attics. The pollen corridor for oak, cedar, and bluegrass adds organic material that feeds microbial growth when moisture is present. Air Quality & Sanitizing details our full treatment protocols.
Mold Treatment
Signs you need it
Musty odor when the system runs, visible mold on registers or in the plenum, or family members with worsening allergy symptoms indoors.
What it costs in Chantilly
Mold treatment for duct systems in Chantilly typically ranges $300-$600 depending on the extent of colonization and whether encapsulation is needed.
How we do it
We apply EPA-registered antimicrobial through the duct system, treat the plenum and coil with botanical-based sanitizer, and deliver before-and-after photos of all treated surfaces.
UV Light Installation
Signs you need it
Recurring mold after cleaning, chronic musty odor, or a medical recommendation for airborne pathogen reduction.
What it costs in Chantilly
UV-C light installation in Chantilly typically runs $400-$700 including the lamp, housing, and electrical connection to the air handler.
How we do it
We mount a Honeywell or Guardsman UV lamp in the supply plenum, wire to the blower circuit, and provide the replacement schedule and warranty documentation.
What Air Quality & Sanitizing Costs in Chantilly
| Item | Typical range in Chantilly |
|---|---|
| Mold treatment (duct system) | $300-$600 |
| UV light installation | $400-$700 |
| Combined sanitizing package (mold + bacteria + odor) | $500-$900 |
Does mold treatment require me to leave the house?
No, we use botanical-based and EPA-registered products that do not require evacuation, though we recommend opening windows for 30 minutes after treatment. The written scope specifies all products used.
How long does UV light installation take?
Most UV installations in Chantilly take 2-3 hours, including mounting, wiring to the air handler, and testing. The lamp is warrantied for one year; replacement bulbs are available direct from CleanRun.
Brands We Service in Chantilly
CleanRun stocks parts and maintains equipment for Honeywell, Aprilaire, Rotobrush, Nikro, Guardsman, and Abatement Technologies systems common in Chantilly’s 1990s-2000s installations. Most replacement components are available same-day from our metro inventory. See our brands for the full list.
Pricing for Air Duct Cleaning in Chantilly, VA
| Service | Typical range in Chantilly |
|---|---|
| Whole-system air duct cleaning (standard colonial, 3-zone) | $400-$700 |
| Large executive home (4+ zone, 4,000+ sq ft) | $600-$900 |
| Dryer vent cleaning (standard run) | $150-$250 |
| Dryer vent cleaning (long run, 20+ ft with multiple elbows) | $250-$350 |
| Evaporator coil cleaning | $250-$450 |
| Blower cleaning | $200-$350 |
| Full HVAC cleaning (coil + blower + air handler) | $400-$800 |
| Mold treatment (duct system) | $300-$600 |
| UV light installation | $400-$700 |
| Duct repair & sealing (per system, minor) | $300-$600 |
| Duct liner replacement / encapsulation (major) | $800-$1,500 |
Three factors push Chantilly prices higher: the sheer square footage and zone count of Dulles-corridor colonials, the additional labor required when original duct board has delaminated and needs repair before cleaning can proceed, and construction particulate loads from ongoing data center development that require more thorough extraction. Every job is quoted with one flat price per system, agreed in writing before any panel comes off, under Haven Standard Clause 1.
Neighborhoods We Serve in Chantilly
CleanRun crews work regularly in Chantilly’s established subdivisions and newer infill communities, with same-day scheduling availability for most service calls booked before noon.
- Westfields
- Franklin Farm
- Sully Station
- Greenbriar
- Brookfield
Service Area - Cities Near Chantilly
CleanRun serves the full Dulles corridor and western Fairfax County from our metro office, with regular calls from Centreville, VA, Fairfax, VA, Reston, VA, and Herndon, VA. Crews are routed daily across this service area; Chantilly appointments are not secondary to other markets.
Serving Chantilly, VA - Our Local Coverage Area
We’re based in the Chantilly 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 About Air Duct Cleaning in Chantilly
No permit is required for standard air duct cleaning or HVAC maintenance in Fairfax County. Duct replacement or modification that alters the building’s mechanical plan may require a county permit; we handle the filing if our scope includes that work.
We carry proof of insurance and licensing that Chantilly HOAs routinely request, and our technicians arrive in marked vehicles with name badges. If your HOA requires advance notice of service appointments, we provide documentation on request.
Yes. Many Chantilly homes have basement flex runs behind drywall; we access these through existing registers or small access panels, then restore the finish. If cutting is required, the scope and price include patch and paint.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Chantilly Customers Say
"They found a disconnected duct in the crawl space that had been dumping conditioned air under the house for years. Photographed it, quoted the repair, fixed it."
- Devon A."On time, professional, and explained what the readings meant without talking down to me."
- Warren E."My allergies genuinely improved. They also told me the ducts did not need sealing, which I had been quoted for elsewhere."
- Petra K.