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 $400-$700 for a full system, and every job starts with a written price before we touch a single panel. We’re CleanRun, and we serve Sterling from our Washington, DC dispatch office with crews that know the difference between a Moorefield Village flex-duct attic run and a Great Falls Woods basement trunk. Call (571) 526-0015 for a free estimate.
Why Sterling Homes Are Different
Sterling’s neighborhoods - Potomac Falls, Moorefield Village, Broad Run Farms, and Amberwoods - were built in concentrated waves from the late 1980s through the early 2000s to house the Dulles Technology Corridor workforce. That leaves a dense stock of similarly built tract homes now hitting the 20-35-year mark with original builder-grade flexible ductwork.
Unlike older DC suburbs with basement-ducted systems, these homes route flex duct through hot, unconditioned attic spaces. Northern Virginia’s high summer humidity causes condensation inside duct liners, accelerating biological growth and debris accumulation. Summer relative humidity regularly exceeds 70%, creating mold colonization risk along duct inner liners even in maintained systems. The area’s position on the Piedmont-to-coastal-plain transition also brings fine clay-particle dust during dry stretches that loads return-air filters faster than sandier-soil suburbs to the east.
Homes in Potomac Falls and Moorefield Village were built by the same handful of tract developers using nearly identical floor plans. Experienced technicians know to expect the supply trunk above the second-floor ceiling with sharp-angle flex-duct drops to floor registers - junctions that catch debris and are often inaccessible without cutting drywall.
Our Main Sterling Services
These are the three services Sterling homeowners call about most.
Air Duct Cleaning in Sterling
We clean every duct run with negative-pressure extraction, photographing the inside before and after so you can see what came out. In Sterling’s attic-sited flex-duct systems, we regularly find disconnected joints and heavy debris at the first elbow above second-floor ceilings. Air Duct Cleaning in Sterling includes the full Documented Photo Record on every visit.
Dryer Vent Cleaning in Sterling
Dryer vents in Sterling’s townhome rows and two-story colonials often run long vertical or horizontal routes with multiple turns, collecting lint in ways that shorter suburban runs don’t. We rotary-brush the full length and check airflow with a manometer. Dryer Vent Cleaning in Sterling is quoted upfront with a written price.
Duct Repair & Sealing in Sterling
Sterling’s 20-35-year-old flex duct is reaching the age where liner degradation and disconnected joints are standard findings. We repair or replace damaged runs and seal leaks with mastic, not tape that fails in attic heat. Duct Repair & Sealing in Sterling includes photo documentation of every repair.
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 addresses what happens when a system built for moderate climates runs nearly year-round in humid, dusty conditions. The evaporator coil, blower, and condenser accumulate debris that reduces airflow and forces the compressor to work harder, which is especially costly in homes with original builder-grade equipment still in service. Our HVAC Cleaning service covers the full air-handling system with photo documentation of every component.
Evaporator Coil Cleaning
Signs you need it
Ice on the coil, weak airflow from registers, or the system running continuously without reaching set temperature.
What it costs in Sterling
Evaporator coil cleaning in Sterling typically runs $250-$450.
How we do it
We access the coil through the plenum - the main air distribution box - apply foaming cleaner, rinse with low-pressure water, and photograph before and after through the access panel.
Blower Cleaning
Signs you need it
Vibration or noise from the air handler, uneven airflow between rooms, or dust puffing from registers when the system starts.
What it costs in Sterling
Blower cleaning in Sterling typically runs $200-$350.
How we do it
We remove the blower assembly, clean the wheel and housing with compressed air and solvent, balance the assembly, and photograph the debris load removed.
What HVAC Cleaning Costs in Sterling
| Item | Typical range in Sterling |
|---|---|
| Evaporator coil cleaning | $250-$450 |
| Blower cleaning | $200-$350 |
| Full HVAC system cleaning | $400-$700 |
How do I know my HVAC system needs cleaning?
If your Sterling home has original ductwork from the 1990s or 2000s and you’ve never had the coil or blower cleaned, debris accumulation is likely restricting airflow. We inspect with a camera before quoting, so you see what we see. Call (571) 526-0015 for a free estimate.
Can HVAC cleaning lower my energy bills?
Yes, a clean coil and blower move air more efficiently, which reduces runtime - significant in Sterling’s climate where systems operate heavily in both summer and winter. The savings vary with your equipment age and current debris load. Call (571) 526-0015 for an inspection and written quote.
Air Quality & Sanitizing in Sterling
Air quality and sanitizing in Sterling targets the biological growth that thrives in humid attic ductwork and the persistent odors that result. The same condensation that degrades flex-duct liners creates ideal conditions for mold colonization, especially in homes with marginal attic ventilation. Our Air Quality & Sanitizing service treats the source, not the symptom, with photo-verified results.
Mold Treatment
Signs you need it
Musty odor when the system runs, visible spotting around registers, or family members with worsening allergy symptoms indoors.
What it costs in Sterling
Mold treatment in Sterling typically runs $300-$600 depending on the number of affected duct runs.
How we do it
We apply an EPA-registered antimicrobial through the duct system under negative pressure, treat the plenum and trunk lines, and photograph every treated run for the job record.
UV Light Installation
Signs you need it
Recurring mold after treatment, or a system located in a damp basement or crawlspace where biological growth persists.
What it costs in Sterling
UV light installation in Sterling typically runs $400-$800 including the lamp and electrical connection.
How we do it
We mount a UV-C lamp in the supply plenum where it irradiates the coil and air stream, wire it to the blower circuit, and show you the installation point in your photo record.
What Air Quality & Sanitizing Costs in Sterling
| Item | Typical range in Sterling |
|---|---|
| Mold treatment | $300-$600 |
| UV light installation | $400-$800 |
| Full air quality assessment | $150-$250 |
Is mold in ducts common in Sterling?
Yes, the combination of attic-sited flex duct and high summer humidity makes mold colonization one of the most common findings in Sterling homes built 1988-2005. We find it most often at the first elbow above second-floor ceilings where condensation pools. Call (571) 526-0015 for a camera inspection.
Will UV lights prevent mold from coming back?
UV-C lamps inhibit biological growth on the coil and in the air stream, but they don’t fix underlying moisture problems from disconnected ductwork or poor attic ventilation. We assess the full system before recommending UV installation. Call (571) 526-0015 for a written evaluation.
Brands We Service in Sterling
We carry parts and use equipment from Rotobrush, Abatement Technologies, Honeywell, and Guardsman, with most common filters, UV lamps, and sealing materials stocked for same-return visits. See our brands for the full roster.
Pricing for Air Duct Cleaning in Sterling, VA
| Service | Typical range in Sterling |
|---|---|
| Full air duct cleaning (whole system) | $350-$650 |
| Dryer vent cleaning | $120-$250 |
| Duct repair & sealing (per run) | $200-$400 |
| Evaporator coil cleaning | $250-$450 |
| Blower cleaning | $200-$350 |
| Full HVAC system cleaning | $400-$700 |
| Mold treatment | $300-$600 |
| UV light installation | $400-$800 |
Prices in Sterling run toward the higher end when attic access requires crawl-board work or when multiple drywall cuts are needed to reach disconnected flex-duct junctions. Every quote is written and agreed before work starts, under Haven Standard Clause 1 - no exceptions, no add-ons after the truck arrives.
Neighborhoods We Serve in Sterling
We work across Sterling’s full residential footprint, from the older sections near Dulles Access Road to newer development along Loudoun County Parkway. Crews are typically on-site within the scheduled window, with same-week availability for most non-emergency work.
- Great Falls Woods
- Herndon Heights
- Holly Knoll
- Potomac Falls
- Moorefield Village
Service Area - Cities Near Sterling
Our crews cover Sterling and surrounding Loudoun and Fairfax County communities. We also serve Herndon, VA, Reston, VA, Centreville, VA, and Fairfax, VA with the same written-price standard and Documented Photo Record on every visit.
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 standard residential duct cleaning or HVAC maintenance in Sterling. Duct repair that involves modifying the permanent HVAC structure may require Loudoun County inspection; we handle permit research and include any costs in the written quote if applicable.
Sterling communities with active HOAs, including several Potomac Falls and Moorefield Village associations, sometimes restrict service vehicle parking or hours. We coordinate with your HOA office when needed and schedule within permitted windows.
Most Sterling appointments are available within 3-5 business days. We don’t promise same-day dispatch - duct cleaning is a scheduled job, and we reserve time to do it with the full photo documentation and written scope our standard requires.
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
"The dryer vent was almost completely blocked with lint. They showed me the photograph and I understood immediately why the dryer had been running twice."
- Lucia M."My allergies genuinely improved. They also told me the ducts did not need sealing, which I had been quoted for elsewhere."
- Petra K."Thorough job on the ducts and the dryer vent. Left the house clean and the paperwork was clear."
- Rafael I.