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 Potomac, MD
Whole-system HVAC cleaning in Potomac typically runs $680-$1,450 for estate-sized homes, with most jobs completed in one full day. The combination of 1960s-1980s original ductwork, multi-zone systems spanning 4,000-8,000 square feet, and the Potomac River valley’s trapped humidity means technicians encounter conditions rarely seen in newer, denser suburbs. Call (571) 487-7204 for a free estimate.
Why Potomac Homes Are Different
Potomac’s housing stock is dominated by large custom and semi-custom estate homes built primarily from the late 1960s through the 1990s, many exceeding 5,000 square feet with complex multi-zone forced-air systems and long duct runs. Some still retain original fiberglass-lined sheet metal or early flexible ductwork that degrades and harbors debris over decades. Newer teardown-replacement mansions add modern multi-zone systems, but the sheer scale of any Potomac home means duct cleaning jobs here are substantially larger and more time-intensive than regional averages.
Potomac sits in the Potomac River valley, where topography traps humidity during DC’s notoriously muggy summers, creating persistently higher indoor relative humidity that accelerates mold and mildew colonization inside ductwork. The dense tree canopy across large lots also drives some of the highest oak and grass pollen concentrations in Montgomery County. Technicians working the River Road and Persimmon Tree Road corridors frequently encounter original 1970s-era fiberglass duct liner that has separated or crumbled inside the sheet metal, turning the entire duct system into a debris reservoir.
Our Main Potomac Services
These are the services Potomac homeowners call about most often.
Air Duct Cleaning in Potomac
We clean the complete supply and return duct network, including trunk lines, branch runs, and registers, using negative-pressure extraction with Rotobrush and Nikro equipment. In Potomac, we regularly document 3-inch debris build-ups at first elbows in homes along Falls Road where original fiberglass liner has deteriorated. Every job includes before-and-after photos of every duct run. Air Duct Cleaning in Potomac is quoted as a flat system price, never per-vent.
Dryer Vent Cleaning in Potomac
Dryer vent cleaning removes lint accumulation from the appliance through the exterior termination, reducing fire risk and improving drying efficiency. Potomac’s larger homes often have longer vent runs through finished spaces, making thorough cleaning more critical. We inspect with a camera and provide photos of the complete run. Dryer Vent Cleaning in Potomac is priced by system length and accessibility.
Duct Repair & Sealing in Potomac
Duct repair addresses separated seams, crushed flexible duct, and degraded fiberglass liner; sealing closes leaks with mastic or metal-backed tape. In Potomac estates, we frequently find original 1970s flexible ductwork that has collapsed or disconnected in crawl spaces. We photograph all damage and deliver a written scope before starting repairs. Duct Repair & Sealing in Potomac carries the same written-price guarantee.
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 Potomac
HVAC cleaning in Potomac addresses the mechanical components that move and condition air through these oversized, often aging systems. The trapped humidity in the Potomac River valley accelerates biological growth on coils and in drain pans, while the heavy pollen load clogs air handlers and blower assemblies faster than in drier, less wooded areas. HVAC Cleaning is essential maintenance for homes where the original equipment has kept running because it was well-built, not because it was clean.
Evaporator Coil Cleaning
Signs you need it
Ice formation on the coil, weak airflow from registers, or musty odors when the AC cycles on in humid summer months.
What it costs in Potomac
Evaporator coil cleaning in Potomac typically ranges from $280-$520, with larger A-frame coils in multi-zone systems at the higher end.
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 document the before and after with photos.
Blower Cleaning
Signs you need it
Vibration or noise from the air handler, uneven heating or cooling across zones, or visible dust puffing from registers at startup.
What it costs in Potomac
Blower assembly cleaning in Potomac typically ranges from $240-$440, depending on whether the motor requires removal for full access.
How we do it
We remove the blower assembly, clean the squirrel cage and housing with compressed air and solvent, balance the fan, and photograph all stages.
What HVAC Cleaning Costs in Potomac
| Item | Typical range in Potomac |
|---|---|
| Evaporator coil cleaning | $280-$520 |
| Blower assembly cleaning | $240-$440 |
| Full HVAC system cleaning (coil + blower + housing) | $680-$1,150 |
How do I know my HVAC components are actually dirty?
We photograph every component before touching it; you see the debris on the coil or blower before we quote the cleaning. Call (571) 487-7204 to schedule an inspection with photo documentation.
Can HVAC cleaning fix uneven temperatures between zones?
It often helps significantly when restricted airflow from dirty components is the cause, though duct leakage may require separate sealing. We diagnose and photograph both issues during the same visit.
Air Quality & Sanitizing in Potomac
Air quality and sanitizing in Potomac targets the biological contamination that thrives in this river valley micro-climate. The combination of elevated humidity, decades of accumulated debris in original ductwork, and dense pollen loads creates conditions where mold, bacteria, and persistent odors become embedded in the HVAC system itself. Air Quality & Sanitizing addresses what cleaning alone cannot remove.
Mold Treatment
Signs you need it
Visible mold around registers, musty odors that return after standard cleaning, or family members with worsening allergy symptoms in humid summer months.
What it costs in Potomac
Mold treatment in Potomac typically ranges from $450-$890, with whole-system applications in large multi-zone homes at the higher end.
How we do it
We apply EPA-registered antimicrobial through the duct system using a fogging device, treat affected surfaces with a botanical-based solution, and verify results with post-treatment photos.
UV Light Installation
Signs you need it
Recurring mold or bacterial growth despite cleaning, or a desire for continuous suppression of biological contamination in the air handler.
What it costs in Potomac
UV light installation in Potomac typically ranges from $380-$720, including the lamp, mounting hardware, and electrical connection.
How we do it
We mount a Honeywell or Aprilaire UV-C lamp in the supply plenum, wire it to the air handler’s 24-volt circuit, and show you the installation in your photo record.
What Air Quality & Sanitizing Costs in Potomac
| Item | Typical range in Potomac |
|---|---|
| Mold treatment (whole system) | $450-$890 |
| UV light installation | $380-$720 |
| Combined mold treatment + UV installation | $750-$1,450 |
Is mold treatment safe for children and pets?
We use botanical-based, EPA-registered products applied when the home is unoccupied, with a two-hour re-entry window; the written scope specifies exact products used. Call (571) 487-7204 for product documentation before scheduling.
How long does UV light installation take?
Most installations require 90-120 minutes, including mounting, wiring, and testing; we photograph the completed installation and include it in your job record.
Brands We Service in Potomac
We clean and service systems from Carrier, Trane, Lennox, Rheem, Goodman, Honeywell, and Aprilaire, with common replacement parts stocked for faster turnaround on Potomac jobs. Our brands page lists the full roster.
Pricing for Air Duct Cleaning in Potomac, MD
| Service | Typical range in Potomac |
|---|---|
| Whole-system air duct cleaning (up to 4,000 sq ft) | $680-$950 |
| Whole-system air duct cleaning (4,000-6,000 sq ft) | $890-$1,250 |
| Whole-system air duct cleaning (6,000+ sq ft / multi-zone) | $1,150-$1,450 |
| Dryer vent cleaning (standard run) | $180-$280 |
| Dryer vent cleaning (extended run / rooftop termination) | $280-$420 |
| Evaporator coil cleaning | $280-$520 |
| Blower assembly cleaning | $240-$440 |
| Full HVAC system cleaning | $680-$1,150 |
| Mold treatment (whole system) | $450-$890 |
| UV light installation | $380-$720 |
| Duct repair & sealing (per system, minor) | $340-$680 |
| Duct repair & sealing (per system, extensive) | $680-$1,200 |
Prices increase in Potomac primarily due to system size, number of zones, and accessibility issues in finished basements or crawl spaces. Every quote is delivered in writing before work starts under Haven Standard Clause 1; there is no per-vent pricing and no post-arrival upselling.
Neighborhoods We Serve in Potomac
We serve homes throughout Potomac, with crews typically arriving within scheduled morning or afternoon windows coordinated from our Washington, DC office. Response time is consistent across the area; estate lots and gated communities do not affect scheduling.
- River Road corridor
- Falls Road estates
- Persimmon Tree Road area
- Bradley Farms
- Orchard Pond
Service Area - Cities Near Potomac
CleanRun serves homeowners throughout Montgomery County and the DC metro area. Crews regularly travel to Rockville, MD, Gaithersburg, MD, Germantown, MD, and Montgomery Village, MD from our regional dispatch.
Serving Potomac, MD - Our Local Coverage Area
We’re based in the Potomac 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 Potomac
No permit is required for standard air duct cleaning or HVAC maintenance in Montgomery County. Duct modifications that alter the building’s structural elements or electrical service may require permitting; we note this in the written scope if applicable.
Provide the gate code or guard contact when booking; our technicians arrive in marked vehicles with identification ready, and Haven Standard Clause 3 requires verified crew notification before arrival.
Properly cleaned ducts improve airflow and allow your HVAC system to manage humidity more effectively, which is particularly beneficial in Potomac’s valley-trapped summer moisture.
Every job concludes with a Documented Photo Record showing the inside of every duct run before and after, delivered as part of your standard job record; this practice has been in place since our first job in 2013.
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 Potomac Customers Say
"Thorough job on the ducts and the dryer vent. Left the house clean and the paperwork was clear."
- Rafael I."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."They found a disconnected duct in the crawl space that had been dumping conditioned air under the house for years. Photographed it, quoted the repair, fixed it."
- Devon A.