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, VA typically runs $450-$850 for a complete system, with air quality and sanitizing services adding $200-$500 depending on whether mold treatment or UV installation is needed. We’re CleanRun Duct Repair & Cleaning, and we dispatch crews to Sterling from our Washington, DC office. Every job starts with a written price before any panel comes off, and every duct run is photographed before and after. Call (240) 771-1508 for a free estimate.
Why Sterling Homes Are Different
Sterling sits immediately beneath active arrival and departure corridors at Dulles International Airport, which means outdoor air intakes draw in measurably higher concentrations of jet-exhaust particulates than nearly anywhere else in Northern Virginia. The bulk of Sterling’s housing stock - neighborhoods like Moorefield Village, Potomac Falls, and Potomac Green - was built during the late-1980s through late-1990s Dulles tech-corridor boom, leaving thousands of homes with original flexible ductwork now 25-35 years old.
These builder-grade flex systems sag, kink, and harbor compacted debris at low points. Our crews working along Loudoun County Parkway regularly find duct boots and main trunk lines coated with a fine dark particulate consistent with jet exhaust - a pattern rarely seen just miles west in Ashburn or north in Leesburg, but predictable here given prevailing westerly winds pushing departure-corridor exhaust directly over these neighborhoods. The DC metro’s humid summers, routinely 70-80% relative humidity through July and August, compound the problem: condensation on poorly insulated flex duct interiors in unconditioned attics creates persistent mold-risk conditions.
Our Main Sterling Services
Homeowners in Sterling call us most often for these three services:
Air Duct Cleaning in Sterling
We clean the full duct network - supply and return runs, trunk lines, and plenum - using negative-pressure extraction (a sealed vacuum system that pulls debris out without releasing it into your home). In Sterling’s older flex-duct systems, we’re especially careful at elbows and sag points where debris compacts. Every run is photographed before and after. Air Duct Cleaning in Sterling
Dryer Vent Cleaning in Sterling
Dryer vent blockages are common in Sterling’s townhome clusters and multi-story colonials where long vent runs pass through unconditioned attic space. We clean the full vent path from dryer to termination, check airflow with a manometer, and photograph the lint load removed. Dryer Vent Cleaning in Sterling
Duct Repair & Sealing in Sterling
Sterling’s original flex ductwork is now well past NADCA’s 15-25 year service life. We replace crushed or torn runs, seal leaks at boots and joints with mastic, and restore proper airflow distribution. Every repair is photographed and documented. Duct Repair & Sealing in Sterling
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 a specific set of problems created by this city’s combination of aging flex-duct infrastructure, airport-proximity particulate loading, and heavy seasonal humidity. Systems here work harder than average - heating through cold snaps, cooling through muggy summers - and the debris that accumulates in coils and blowers directly reduces efficiency and indoor air quality. We approach HVAC Cleaning as a documented, room-by-room service, not a vacuum-and-go visit.
Evaporator Coil Cleaning
Signs you need it
Ice buildup on the coil, weak airflow from registers, or musty odors when the AC cycles on in Sterling’s humid summers.
What it costs in Sterling
Evaporator coil cleaning typically runs $250-$450 depending on accessibility and contamination level.
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 the coil condition before and after.
Blower Cleaning
Signs you need it
Uneven heating or cooling between rooms, longer cycle times, or visible dust puffing from registers when the system starts.
What it costs in Sterling
Blower assembly cleaning typically runs $200-$350 for standard residential units.
How we do it
We remove the blower housing, clean the wheel and motor housing with compressed air and contact cleaner, balance the assembly, and document RPM and amp draw.
What HVAC Cleaning Costs in Sterling
| Item | Typical range in Sterling |
|---|---|
| Evaporator coil cleaning | $250 - $450 |
| Blower assembly cleaning | $200 - $350 |
| Full HVAC system cleaning (coil, blower, plenum) | $450 - $850 |
How do I know my HVAC system needs cleaning, not just my ducts?
If your ducts are clean but rooms still heat unevenly, or your energy bills spike without rate changes, the problem is likely in the coil or blower. We inspect both and show you the photo evidence before recommending any work. Call (240) 771-1508 for a free inspection.
Will cleaning my HVAC system help with Sterling’s humidity problems?
Clean coils transfer heat more efficiently, which improves dehumidification, but persistent attic condensation usually requires duct sealing or insulation upgrades we can assess during the same visit. Call (240) 771-1508 to schedule.
Air Quality & Sanitizing in Sterling
Air quality and sanitizing in Sterling addresses the specific microbial risks created by humid flex-duct interiors and jet-exhaust particulate loading that other Northern Virginia cities simply don’t face at the same scale. The dark, organic film our crews find in Potomac Falls and Dulles-area ductwork feeds mold and bacterial growth when moisture is present. We treat these as documented remediation jobs, not spray-and-pray applications. Air Quality & Sanitizing follows the same written-price, photo-record protocol as every CleanRun service.
Mold Treatment
Signs you need it
Visible mold around registers, musty odors that intensify when the AC runs, or allergy symptoms that worsen at home during Sterling’s humid summer months.
What it costs in Sterling
Mold treatment for residential duct systems typically runs $400-$800 depending on extent and accessibility.
How we do it
We apply an EPA-registered antimicrobial through the duct network using a fogging system, treat affected boots and plenum surfaces directly, and provide post-treatment lab results or photo documentation.
UV Light Installation
Signs you need it
Recurring mold despite cleaning, chronic musty odors, or a household member with respiratory sensitivity to microbial growth.
What it costs in Sterling
UV-C light installation in the plenum or air handler typically runs $350-$650 including the lamp and electrical connection.
How we do it
We mount a UV-C lamp downstream of the coil where it irradiates passing air and coil surfaces continuously, wire it to the blower circuit, and show you the installed position in your photo record.
What Air Quality & Sanitizing Costs in Sterling
| Item | Typical range in Sterling |
|---|---|
| Mold treatment (duct system) | $400 - $800 |
| UV-C light installation | $350 - $650 |
| Combined sanitizing package (mold + UV) | $700 - $1,200 |
Is mold in my ducts common in Sterling specifically?
Yes - the combination of 25-35 year old flex duct, high humidity, and organic particulate loading from airport proximity creates conditions we see more frequently here than in Leesburg or Ashburn. We document the extent with photos before treating. Call (240) 771-1508 for an inspection.
How long does UV light installation take?
Most residential UV installations are completed in 2-3 hours, with the lamp positioned for maximum coil and air-stream exposure. We test operation and include the install photo in your documented record. Call (240) 771-1508 to schedule.
Brands We Service in Sterling
We stock parts and service equipment from Honeywell, Aprilaire, and Abatement Technologies - brands specified in many Sterling homes built during the 1990s and 2000s. Common components like Aprilaire media filters and Honeywell electronic air cleaner cells are typically available without ordering delays. our brands
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 |
| HVAC coil cleaning | $250 - $450 |
| Blower assembly cleaning | $200 - $350 |
| Full HVAC system cleaning | $450 - $850 |
| Duct repair & sealing (per system) | $400 - $900 |
| Mold treatment | $400 - $800 |
| UV light installation | $350 - $650 |
Prices in Sterling trend toward the higher end when attics are tight to access, when original flex duct requires partial replacement during cleaning, or when mold treatment follows jet-exhaust particulate buildup in the Dulles corridor neighborhoods. Every price is written and agreed before work starts, per Haven Standard Clause 1 - no exceptions.
Neighborhoods We Serve in Sterling
Our crews work throughout Sterling’s residential areas, with scheduling coordinated to minimize drive time between jobs on the same day. Most appointments are available within 3-5 business days.
- Moorefield Village
- Potomac Falls
- Potomac Green
- Broad Run Farms
- Dulles
Service Area - Cities Near Sterling
We serve Sterling and the surrounding Loudoun and Fairfax County communities regularly. Homeowners in Herndon, VA and Reston, VA share similar housing stock and airport-proximity conditions. We also work in Chantilly, VA and Leesburg, VA, where duct conditions differ enough that our crews adjust equipment and expectations accordingly.
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 routine duct cleaning in Sterling. Duct repair or replacement that modifies the HVAC system’s capacity may require Loudoun County permit review; we handle permit identification as part of our written scope when applicable. Call (240) 771-1508 for specifics on your job.
We typically schedule Sterling appointments within 3-5 business days. Emergency mold or airflow issues affecting system operation are prioritized. All calls are answered by a live person who can check real-time crew availability.
We service both. Chase Heritage Apartment Homes and similar multi-family properties in Sterling often have centralized or stacked duct systems requiring coordination with building management; we provide written scopes for landlord or HOA approval when needed. Call (240) 771-1508 to discuss your building’s access requirements.
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."Thorough job on the ducts and the dryer vent. Left the house clean and the paperwork was clear."
- Rafael I."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.