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.
Before
After
Before
After
Before
AfterAir Duct Cleaning in Sterling, VA
HVAC cleaning in Sterling typically runs $350-$650 for a whole-system service, with air quality and sanitizing treatments adding $200-$450 depending on contamination level and accessibility. We’re CleanRun Duct Repair & Cleaning, and our crews work Sterling homes with the same equipment we’d use on our own: Rotobrush agitation systems, Nikro negative-pressure extractors, and Abatement Technologies HEPA containment. Every job starts with a written price before a panel comes off, and every duct run is photographed before and after. Call (240) 363-3380 for a free estimate.
Why Sterling Homes Are Different
Sterling sits at a unique intersection of aging infrastructure and explosive commercial growth. The Sterling Park subdivision, built from the late 1960s through the 1980s, contains thousands of homes with original fiberglass duct board systems now 40 to 50 years old. These systems shed degraded fibers and harbor biological buildup that newer flex duct simply doesn’t match. Our technicians regularly find 1970s duct board where the interior surface has delaminated, releasing glass fibers directly into the airstream. Homeowners notice it as throat irritation or white fibrous debris collecting at supply registers.
Meanwhile, the relentless construction along Route 7 and Loudoun County Parkway, part of Data Center Alley’s dense commercial corridor, generates fine particulate that infiltrates residential HVAC systems at rates we don’t see in quieter suburbs. Northern Virginia’s humid subtropical climate compounds this: summer humidity pushes into ranges that promote mold colonization inside porous older duct board, while spring oak and cedar pollen loads return-air grilles rapidly. Homes built during Loudoun’s 1990s-2000s tech boom present a different profile, low-grade flex duct with poor support that sags and tears, but both eras share one trait: new owners rarely know the prior cleaning history.
Our Main Sterling Services
These are the three services Sterling homeowners call about most often. Each has its own dedicated Sterling page with full pricing and scope details.
Air Duct Cleaning in Sterling
Full-system cleaning of supply and return duct runs, registers, and the main trunk line, with a documented photo record of every run before and after. In Sterling Park homes, we pay particular attention to degraded fiberglass duct board that can release fibers during agitation. Air Duct Cleaning in Sterling covers complete scope and pricing.
Dryer Vent Cleaning in Sterling
Removal of lint accumulation from dryer vent lines through the termination point, with airflow testing before and after. Sterling’s mix of townhomes and single-family homes means vent configurations vary from short through-wall runs to extended vertical drops in multi-story units. Dryer Vent Cleaning in Sterling has full details.
Duct Repair & Sealing in Sterling
Repair of disconnected, torn, or degraded ductwork with mechanical fastening and mastic sealing, plus full-system pressure testing to verify results. Sterling’s aging flex duct and delaminating duct board both require repair before cleaning can be effective. Duct Repair & Sealing in Sterling explains our approach.
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 Sterling
HVAC cleaning in Sterling means addressing systems that have operated through decades of pollen loading, construction dust infiltration, and humidity cycling that competitors in drier climates simply don’t encounter. Our HVAC Cleaning service targets the components that move and condition air, not just the ducts that carry it. In Sterling Park homes with original equipment, we often find evaporator coils clogged with fibrous debris from degrading duct board upstream, while newer homes in Loudoun Valley or Cascades show blower wheels caked with fine particulate from nearby construction.
Evaporator Coil Cleaning
Signs you need it
Ice buildup on refrigerant lines, weak airflow from registers, or cooling that can’t keep up during Sterling’s July humidity peaks.
What it costs in Sterling
Evaporator coil cleaning typically runs $180-$320, with access difficulty and contamination level setting the final price.
How we do it
We remove the coil if accessible, apply foaming cleaner formulated for aluminum 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 heating or cooling across rooms, or dust puffing from registers when the system cycles on.
What it costs in Sterling
Blower cleaning and wheel balancing typically range from $150-$280 depending on assembly complexity.
How we do it
We remove the blower assembly, clean the wheel and housing with compressed air and solvent, balance the wheel, and test amperage draw against manufacturer specs.
What HVAC Cleaning Costs in Sterling
| Item | Typical range in Sterling |
|---|---|
| Evaporator coil cleaning | $180-$320 |
| Blower cleaning | $150-$280 |
| Full HVAC cleaning (coil + blower + housing) | $350-$650 |
How do I know my HVAC components are actually dirty?
We photograph every component before touching it, and the photo is in your job record before we leave. If the coil or blower shows debris buildup, you’ll see it; if it’s clean, we’ll tell you that too. Call (240) 363-3380 for a free estimate.
Can HVAC cleaning fix my cooling problem?
It can restore airflow and heat transfer efficiency lost to debris, but it won’t fix refrigerant leaks, failing capacitors, or undersized equipment. We document what we find and flag mechanical issues for your HVAC contractor.
Air Quality & Sanitizing in Sterling
Air quality and sanitizing in Sterling addresses the biological load that Northern Virginia’s humidity and pollen cycle deposit inside HVAC systems, particularly in Sterling Park’s aging porous duct board where mold colonizes behind visible surfaces. Our Air Quality & Sanitizing service applies EPA-registered treatments and installs permanent controls, with every step photographed and every product named in writing before application.
Mold Treatment
Signs you need it
Musty odor when the system runs, visible dark staining at registers, or persistent respiratory irritation that improves when you leave the house.
What it costs in Sterling
Mold treatment for a typical Sterling home runs $300-$550, with extent of colonization and duct material determining final scope.
How we do it
We apply an EPA-registered botanical fungistat to all interior duct surfaces using mechanical misting, then run the system to distribute treatment and photograph verification points.
UV Light Installation
Signs you need it
Repeated mold recurrence after cleaning, or a system in a damp basement or crawl space where humidity stays elevated year-round.
What it costs in Sterling
UV-C lamp installation with annual replacement bulb supply typically ranges $400-$700 for a single-lamp system.
How we do it
We mount a 254-nanometer UV-C lamp in the supply plenum, wire to the blower circuit for automatic operation, and provide the installation photo and bulb replacement schedule in writing.
What Air Quality & Sanitizing Costs in Sterling
| Item | Typical range in Sterling |
|---|---|
| Mold treatment (whole system) | $300-$550 |
| UV light installation | $400-$700 |
| Combined air quality package | $550-$950 |
Is the sanitizing treatment safe for kids and pets?
We use EPA-registered botanical products with no residual fumes, and we ventilate the system before declaring the job complete. The written scope names the exact product applied. Call (240) 363-3380 for specifics on any product we use.
How long does mold treatment take to work?
Active mold is neutralized on contact, but odor may take 24-48 hours to dissipate as treated material dries. We return at 30 days to inspect if staining or odor persists, per our 365-Day Done Right Promise.
Brands We Service in Sterling
We stock parts and service equipment from Aprilaire, Honeywell, Abatement Technologies, and Guardsman, with most common filters, UV lamps, and sanitizer concentrates on the truck. If we don’t have it, our Washington, DC office coordinates next-day supply for Sterling calls.
Pricing for Air Duct Cleaning in Sterling, VA
| Service | Typical range in Sterling |
|---|---|
| Air duct cleaning (whole system) | $350-$650 |
| Dryer vent cleaning | $120-$220 |
| Duct repair & sealing (per system) | $400-$900 |
| Evaporator coil cleaning | $180-$320 |
| Blower cleaning | $150-$280 |
| Full HVAC cleaning | $350-$650 |
| Mold treatment | $300-$550 |
| UV light installation | $400-$700 |
Three factors push Sterling prices toward the higher end: degraded duct board requiring gentler, slower agitation; construction particulate loading from Data Center Alley activity; and access difficulty in older homes with finished basements covering the air handler. Every price is written and agreed before work starts, with no per-vent add-ons or post-arrival surprises.
Neighborhoods We Serve in Sterling
We work across Sterling’s full residential footprint, from original Sterling Park subdivisions to newer clusters near Route 28. Scheduling runs from our Washington, DC office with typical appointment availability within 3-5 business days.
- Sterling Park
- Cascades
- Loudoun Valley
- Countryside
- Sugarland Run
Service Area - Cities Near Sterling
Our crews cover the full Loudoun-Fairfax corridor, including Herndon, VA to the east with its mix of tech-era townhomes and older single-family stock; Reston, VA and its extensive planned community infrastructure; Fairfax, VA with its deeper inventory of 1970s-1980s homes; and Falls Church, VA where smaller lot sizes and mature tree cover create distinct contamination profiles. Each city page has pricing and scope specific to that market.
Serving Sterling, VA - Our Local Coverage Area
We’re based in the Sterling 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 Sterling
No permit is required for cleaning or minor sealing in Loudoun County. Structural duct modifications or new installations may need county review. We handle any permit documentation if our repair scope triggers it, and we note permit status in your written job scope.
We typically book 3-5 business days out for Sterling, with dispatch coordinated from our Washington, DC office. Emergency mold or severe airflow restriction gets priority. Call (240) 363-3380 for current availability.
Our Nikro and Rotobrush units break down to fit through standard basement hatches and stairwells. We’ve worked in Sterling Park homes with 1970s construction access since 2013. If your access is unusually restricted, we note it during the estimate walkthrough and adjust equipment selection accordingly.
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 Sterling Customers Say
"Flat price agreed up front, no per-vent add-ons at the end. That was the whole reason I did not call the coupon company."
- Suzanne B."My allergies genuinely improved. They also told me the ducts did not need sealing, which I had been quoted for elsewhere."
- Petra K."The before and after photographs of each run are the reason I used them. You cannot argue with what came out of the return."
- Marguerite O.