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
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Before
AfterAir Duct Cleaning in Sterling, VA
HVAC cleaning in Sterling typically runs $380-$620 for a whole-system job, with most homes in the Sterling Park and Cascades areas falling in the $450-$550 range due to older duct layouts and attic trunk configurations. We’re CleanRun Duct Repair & Cleaning, and we serve Sterling from our Washington, DC dispatch office with crews that carry Rotobrush and Nikro equipment, background-checked under Haven Standard Clause 3: Verified Crews. Every job starts with a written price before any panel comes off, and ends with a Documented Photo Record of every duct run. Call (571) 487-7204 for a free estimate.
Why Sterling Homes Are Different
Sterling sits at a unique collision point in Loudoun County housing stock. The original Sterling Park subdivision, built 1967-1975, holds some of the oldest forced-air systems in the county - rigid galvanized steel trunks wrapped in first-generation fiberglass batt insulation that has compressed or crumbled over 50+ years, shedding fibers into the airstream. A mile south, the massive Cascades and Dulles Corridor subdivisions built 1985-2000 are hitting the 25-35-year mark where flexible duct liners crack, delaminate, and mastic seals fail.
Two separate waves of deferred duct maintenance are converging here, not seen in newer Ashburn to the west or mixed-age Herndon to the east. Northern Virginia’s humid subtropical summers push Sterling’s attic temperatures above 130°F, and in the prevalent two-story colonials with supply trunks through unconditioned attic spaces, repeated heat and condensation cycles cause flex duct liners to sweat and sag. Low spots trap debris and promote mold - a failure mode accelerated by consistent high humidity. The clay dust and pollen load here is substantial, and without major duct servicing, it accumulates for decades.
Our Main Sterling Services
These are the three services Sterling homeowners call about most, each with its own dedicated page and local pricing.
Air Duct Cleaning in Sterling
Whole-system duct cleaning for Sterling’s split-foyers and colonials, from the plenum (the main distribution box) through every duct run to each register. We photograph the inside of every run before and after, using negative-pressure extraction - suction applied at the trunk while agitation tools loosen debris at each vent. Sterling Park’s steel trunks and Cascades’ flex systems need different approaches; we adjust the method to what the camera shows. Air Duct Cleaning in Sterling has full pricing and scheduling details.
Dryer Vent Cleaning in Sterling
Dryer vent blockages are a leading cause of house fires, and Sterling’s townhome clusters in the Cascades often have long horizontal runs through shared walls that lint cakes onto. We clean the full vent path from dryer to termination, photograph the before-and-after condition, and measure airflow improvement. The Documented Photo Record shows you what was actually removed. Dryer Vent Cleaning in Sterling covers local pricing and signs you need it.
Duct Repair & Sealing in Sterling
When flex duct liners crack or mastic seals fail in Sterling’s attic trunks, cleaning alone won’t fix the airflow loss or contamination pathway. We repair or replace damaged sections, seal joints with proper materials, and photograph every repair. The 365-Day Done Right Promise applies to all sealing work. Duct Repair & Sealing in Sterling has the full scope and cost breakdown.
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
AfterHVAC Cleaning in Sterling
HVAC cleaning in Sterling addresses what decades of Northern Virginia clay dust, pollen, and humidity have deposited inside the actual mechanical components - not just the ducts. In Sterling Park’s 1967-1975 systems, we regularly find evaporator coils coated with debris that has bypassed original fiberglass filters; in Cascades-era homes, blower wheels cake with residue from failed flex duct seals pulling attic air. HVAC Cleaning covers our full equipment and methodology.
Evaporator Coil Cleaning
Signs you need it
Weak airflow from registers, ice formation on the coil cabinet, or cooling that can’t keep up during Sterling’s 95°F July afternoons.
What it costs in Sterling
Evaporator coil cleaning in Sterling typically runs $180-$340.
How we do it
We access the coil through the plenum, apply foaming cleaner, rinse with low-pressure water capture, and photograph the before-and-after condition.
Blower Cleaning
Signs you need it
Vibration noise from the air handler, uneven heating or cooling between floors, or dust puffing from registers when the system cycles on.
What it costs in Sterling
Blower cleaning in Sterling typically runs $160-$280.
How we do it
We remove the blower assembly, clean the wheel and housing with compressed air and solvent, balance the assembly, and photograph all stages.
What HVAC Cleaning Costs in Sterling
| Item | Typical range in Sterling |
|---|---|
| Evaporator coil cleaning | $180-$340 |
| Blower cleaning | $160-$280 |
| Full HVAC cleaning (coil + blower + housing) | $380-$620 |
Can HVAC cleaning fix weak airflow in my Sterling home?
Yes, if the restriction is at the coil or blower - we measure static pressure before and after to confirm. Call (571) 487-7204 for a free estimate.
How do I know the HVAC cleaning was actually done?
Every component is photographed before and after, and the images are delivered as part of your standard job record - Haven Standard Clause 2: Documented Results.
Air Quality & Sanitizing in Sterling
Air quality and sanitizing in Sterling targets the microbial and odor problems that follow decades of humidity and deferred maintenance. In Sterling Park’s original homes, compressed fiberglass batt insulation sheds organic particles that support bacterial growth; in Cascades-era flex systems, cracked liners pull humid attic air that breeds mold at sag points. Air Quality & Sanitizing details our full treatment protocols.
Mold Treatment
Signs you need it
Musty odor when the system runs, visible growth at registers, or recent water intrusion in attic trunk areas.
What it costs in Sterling
Mold treatment in Sterling typically runs $280-$480.
How we do it
We apply EPA-registered antimicrobial through the duct system, treat affected surfaces with contact spray, and verify with post-treatment photography.
UV Light Installation
Signs you need it
Recurring microbial growth after cleaning, allergy symptoms that worsen when the system cycles, or a home in Sterling’s high-humidity zone with chronic condensation.
What it costs in Sterling
UV light installation in Sterling typically runs $320-$580.
How we do it
We mount a Honeywell or Aprilaire UV-C lamp in the supply plenum, wire to the blower circuit for automatic operation, and photograph the installation.
What Air Quality & Sanitizing Costs in Sterling
| Item | Typical range in Sterling |
|---|---|
| Mold treatment | $280-$480 |
| UV light installation | $320-$580 |
| Full air quality package (treatment + UV) | $520-$880 |
Does mold treatment require me to leave my Sterling home?
No - we use EPA-registered products with standard re-entry times, and we ventilate the system thoroughly before restart. Call (571) 487-7204 to schedule.
How long does UV light installation take?
Most Sterling installations finish in 2-3 hours, including mounting, wiring, and system testing with photographic documentation.
Brands We Service in Sterling
We stock parts and service systems from Honeywell, Aprilaire, and other major manufacturers. Most filter and UV lamp replacements ship same-day from our Washington, DC office to Sterling. See our brands for the full roster.
Pricing for Air Duct Cleaning in Sterling, VA
| Service | Typical range in Sterling |
|---|---|
| Whole-system air duct cleaning | $380-$620 |
| Dryer vent cleaning | $140-$220 |
| Duct repair & sealing (per system) | $280-$520 |
| Evaporator coil cleaning | $180-$340 |
| Blower cleaning | $160-$280 |
| Condenser cleaning | $140-$240 |
| Mold treatment | $280-$480 |
| UV light installation | $320-$580 |
| Bacteria sanitizing | $220-$380 |
| Odor removal treatment | $180-$320 |
Prices in Sterling run toward the higher end when attic access is limited, when multiple duct runs need repair before cleaning can proceed, or when original Sterling Park steel trunks require specialized agitation tools. Every price is written and agreed before work starts - Haven Standard Clause 1 - with no per-vent add-ons or post-arrival surprises.
Neighborhoods We Serve in Sterling
We schedule Sterling appointments with route density in mind, typically offering next-day or two-day availability across these areas. Crews carry the full equipment roster for both steel-trunk and flex-duct systems.
- Sterling Park
- Cascades
- Lowes Island
- Countryside
- Dulles Town Center area
Service Area - Cities Near Sterling
Our crews work throughout Loudoun and Fairfax counties from the Washington, DC dispatch office. Homeowners in Herndon, VA often share Sterling’s mixed-age housing challenges, while Reston, VA has a higher proportion of mid-rise systems needing different access methods. Great Falls, VA presents larger custom homes with extended duct runs, and Chantilly, VA splits between older ranchers and newer construction with varying maintenance histories.
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 - residential air duct cleaning does not require a Loudoun County permit. Duct repair or modification that alters the HVAC structure may need review; we flag this during the free estimate and handle any paperwork if replacement work is scheduled.
We typically schedule Sterling appointments within 1-2 business days, with routing optimized for Loudoun County density. All calls are answered by a live person who can check real-time crew availability.
Most Sterling HOAs, including Cascades and Lowes Island, do not regulate interior HVAC work. We carry proof of insurance and licensing for any community office that requests documentation, and we coordinate parking for our service vehicles without resident hassle.
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
"On time, professional, and explained what the readings meant without talking down to me."
- Warren E."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.