Air Duct Cleaning in Great Falls - One Flat Price, Before-and-After Photos

Air Duct Cleaning in Great Falls, VA

HVAC cleaning in Great Falls typically runs $480-$890 for a whole-home system, with most estate homes falling in the upper half due to multi-zone ductwork and original equipment from the 1980s and 1990s. We’re CleanRun Duct Repair & Cleaning, and we dispatch crews to Great Falls 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 (571) 487-7204 for a free estimate.

Call (571) 487-7204

Why Great Falls Homes Are Different

Great Falls sits under one of the densest mature hardwood canopies in Northern Virginia. Oak, tulip poplar, and maple pollen loads here are among the heaviest in Fairfax County, and that pollen does not stay outside. It enters through return-air intakes, coats filter media within weeks, and settles into duct interiors that have rarely been professionally cleaned since the original installation date.

The housing stock compounds the problem. Most homes are 4,000-9,000 square foot custom or semi-custom estates built from the mid-1970s through the late 1990s, with long, branching duct runs serving multiple HVAC zones, finished basements, and later additions. The relative humidity under this tree canopy runs higher than in cleared suburbs like McLean or Reston just a few miles east, which raises condensation risk inside metal ductwork.

One finding sets Great Falls apart from neighboring service areas: original whole-house bypass humidifiers installed in the 1980s. After 30-40 years of minimal service, these units routinely harbor mold and mineral scale that circulates directly into the duct network. Our crews encounter them as a near-routine finding here, far more consistently than in Vienna or McLean.

Our Main Great Falls Services

Homeowners in Great Falls call us most often for these three services. Each has its own dedicated page with full pricing and scope details.

Air Duct Cleaning in Great Falls

We clean the full duct network: supply and return runs, trunk lines, plenum (the main distribution box), and registers. In Great Falls, this means addressing decades of accumulated pollen and organic debris in original ductwork, plus the mineral scale and microbial growth that bypass humidifiers can introduce. Every run is photographed before and after. Air Duct Cleaning in Great Falls

Dryer Vent Cleaning in Great Falls

Dryer vent blockages are a fire hazard and efficiency killer. In Great Falls, long vent runs through finished basements and multiple stories are common in estate homes built in the 1980s and 1990s. We clear the full run from appliance to termination, inspect with a camera, and document the before-and-after airflow improvement. Dryer Vent Cleaning in Great Falls

Duct Repair & Sealing in Great Falls

Original ductwork in Great Falls estates often shows separated seams, corroded connectors, and leakage at plenum joints after 30-40 years of thermal cycling. We seal with mastic and metal-backed tape, replace damaged sections, and pressure-test the repaired system. All work is photographed and backed by our 365-Day Done Right Promise. Duct Repair & Sealing in Great Falls

Before

After

HVAC Cleaning in Great Falls

Great Falls estate homes built between the 1970s and 1990s typically run multi-zone forced-air systems with original evaporator coils, blowers, and air handlers that have never been removed for cleaning. The heavy pollen load and higher humidity under the local tree canopy accelerate coil fouling and blower wheel buildup, restricting airflow and forcing compressors to run longer. HVAC Cleaning addresses these components directly, not the duct network alone.

Evaporator Coil Cleaning

Signs you need it

Ice formation on refrigerant lines, weak airflow from registers, or cooling that cannot keep up on humid July afternoons in Great Falls.

What it costs in Great Falls

Evaporator coil cleaning in Great Falls typically ranges from $280 to $450, with access difficulty in older air handlers pushing some estate homes toward the higher end.

How we do it

We remove the coil assembly where accessible, apply foaming cleaner approved 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 noise from the air handler, dust streaking at supply registers, or a motor that cycles on thermal overload during peak summer demand.

What it costs in Great Falls

Blower cleaning in Great Falls typically ranges from $220 to $380, with multi-speed and variable-speed motors in larger estate systems requiring additional disassembly time.

How we do it

We remove the blower assembly, clean the wheel blades and housing with compressed air and solvent, balance the assembly, and reinstall with fresh hardware torque to manufacturer spec.

What HVAC Cleaning Costs in Great Falls

How do I know my HVAC components need cleaning, not just my ducts?

If your ducts were cleaned recently but rooms still heat or cool unevenly, or the system runs longer than it used to, the restriction is likely at the coil or blower. We inspect both with a camera before quoting. Call (571) 487-7204 for a free estimate.

Can you clean HVAC components without damaging original equipment from the 1980s?

Yes. We document the condition of aged coils and blower housings with photos before touching them, and we use non-corrosive cleaners formulated for older aluminum and galvanized steel. Haven Standard Clause 1 requires written approval of any work that exceeds the original scope.

Air Quality & Sanitizing in Great Falls

The combination of original bypass humidifiers, decades of pollen accumulation, and higher humidity under the Great Falls tree canopy creates conditions for microbial growth that standard duct cleaning alone does not address. Air Quality & Sanitizing targets living contaminants and their sources with documented application protocols and post-treatment verification.

Mold Treatment

Signs you need it

Musty odor at registers when the system first cycles, visible growth on duct interior surfaces in the photo record, or chronic respiratory irritation that improves when the system is off.

What it costs in Great Falls

Mold treatment in Great Falls typically ranges from $450 to $780, with extent of colonization in original ductwork and the need for source removal at humidifier pads driving the final scope.

How we do it

We apply EPA-registered antimicrobial through the duct network under negative pressure, replace contaminated porous materials, and collect post-treatment samples documented in the job record.

UV Light Installation

Signs you need it

Recurrent mold after professional cleaning, a humidifier pad that requires quarterly replacement, or a household member with immunocompromise who needs continuous air-stream sterilization.

What it costs in Great Falls

UV light installation in Great Falls typically ranges from $380 to $650, with dual-lamp systems for multi-zone air handlers at the upper end of the range.

How we do it

We mount a UV-C lamp in the supply plenum downstream of the coil, wire to the air handler’s 24-volt terminal, and verify irradiance at the specified distance with a meter reading recorded in the job file.

What Air Quality & Sanitizing Costs in Great Falls

Will mold treatment damage my original ductwork?

No. We use non-corrosive, EPA-registered products applied at manufacturer-specified dilution, and we avoid fogging methods that can saturate fiberglass duct board in older Great Falls systems. The written scope specifies every product by name before work begins.

How do I know the UV light is actually working?

We measure UV-C irradiance at the lamp surface and at the target distance with a calibrated radiometer, record both readings in your job file, and schedule annual lamp replacement to maintain output above the 70% threshold.

Brands We Service in Great Falls

We stock parts and service equipment from Aprilaire, Abatement Technologies, Guardsman, and Rotobrush. Most common humidifier pads, UV lamps, and filter media are available without ordering delay. For less common components in older Great Falls systems, we source overnight and schedule return installation. See our brands for the full roster.

Pricing for Air Duct Cleaning in Great Falls, VA

Neighborhoods We Serve in Great Falls

Our crews cover the full Great Falls service area, from the Potomac riverfront estates to the interior wooded parcels off Georgetown Pike and Walker Road. Typical scheduling runs 2-4 business days for standard cleaning, with emergency mold treatment available next-day when conditions warrant.

• Great Falls Forest
• Colvin Run
• Forestville
• Leigh Mill
• Difficult Run

Service Area - Cities Near Great Falls

We serve Great Falls directly and schedule neighboring areas from our Washington, DC office. Homeowners in Reston, VA, Herndon, VA, Sterling, VA, and Vienna, VA can book the same documented service, written pricing, and photo-record deliverables.

FAQs About Air Duct Cleaning in Great Falls