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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Before
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Before
AfterAir Duct Cleaning in Washington, DC
Whole-system HVAC cleaning in Washington, DC typically runs $450-$850 for a standard single-family row house, with most jobs scheduled within a week and completed in one day. The city’s 1880s-1930s brick housing stock, retrofitted with forced-air ductwork crammed into closets and soffits, creates conditions we don’t see in purpose-built suburbs: narrow, debris-choked runs that demand specialized equipment and documented technique. Call (240) 318-7712 for a written price before any work starts.
Why Washington Homes Are Different
Washington’s residential neighborhoods - Capitol Hill, Petworth, Columbia Heights, Shaw, Bloomingdale - are overwhelmingly 1880s-1930s brick row houses built for steam or hot-water radiator heat, with no original ductwork. When forced-air HVAC was retrofitted into these narrow, three-story homes, installers crammed flex duct into closets, wall cavities, and dropped ceilings, creating undersized, hard-to-access runs that accumulate debris faster and require specialized techniques that technicians used to purpose-built suburban systems rarely encounter.
DC was built on low-lying land at the confluence of the Potomac and Anacostia Rivers - historically marshy terrain - giving it some of the highest sustained relative humidity on the East Coast, with summers regularly holding 70-80% RH for weeks at a time. That moisture infiltrates poorly sealed retrofit ductwork and feeds mold growth year-round. In lower-elevation neighborhoods like Bloomingdale and Eckington, which sit in the Anacostia floodplain, we routinely find visible mold inside supply ducts even on systems only five to seven years old. The combination of high groundwater vapor, slab-on-grade or shallow-basement construction, and unsealed flex duct connections creates a near-perfect environment for fungal colonization that simply does not occur at the same rate in drier cities or higher-elevation suburbs like Arlington or Bethesda.
Our Main Washington Services
Washington homeowners call us most often for deep duct cleaning and dryer vent work, though duct repair and sealing is increasingly common in the retrofit housing stock.
Air Duct Cleaning in Washington
We clean every duct run with negative-pressure extraction - a vacuum system that pulls debris out while agitation tools loosen it - and photograph the inside of each run before and after. In Capitol Hill and Georgetown, where successive HVAC replacements have left dead-end runs layered with decades of debris, we map the system first to find what others miss. Air Duct Cleaning in Washington is priced as a complete system, never per vent.
Dryer Vent Cleaning in Washington
Dryer vents in Washington row houses often run 20-35 feet through shared walls or terminate in inaccessible locations, creating lint buildup that restricts airflow and creates fire risk. We use rotary brushes and high-velocity air to clear the full run, then verify flow with an anemometer. Dryer Vent Cleaning in Washington includes a written airflow reading before and after.
Duct Repair & Sealing in Washington
Retrofit ductwork in Washington’s old housing stock leaks at connection points, especially where flex duct meets rigid trunk lines in cramped soffits. We seal with mastic and mechanical fasteners, then pressure-test to verify. In Petworth and Columbia Heights, we regularly find disconnected runs that have been blowing conditioned air into wall cavities for years. Duct Repair & Sealing in Washington is quoted as a flat system price.
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 Washington
Washington’s humidity and retrofit ductwork create a specific maintenance profile: evaporator coils in these systems freeze more often, blower motors labor against restricted airflow, and condensate pans overflow into ceilings. HVAC Cleaning here means addressing the whole air path, not just visible registers, because debris collects where technicians without row-house experience never look.
Evaporator Coil Cleaning
Signs you need it
Ice on refrigerant lines, weak airflow from registers, or water stains on ceilings below the air handler.
What it costs in Washington
$280-$420 for coil cleaning as a standalone service, or included in whole-system HVAC cleaning at $450-$850.
How we do it
We remove the coil if accessible, apply foaming cleaner, rinse with low-pressure water, and photograph the fins before and after.
Blower Cleaning
Signs you need it
Vibration or noise from the air handler, uneven heating or cooling between floors, or dust puffing from registers at startup.
What it costs in Washington
$180-$320 for blower cleaning alone, typically bundled with coil and duct cleaning for the full system price.
How we do it
We remove the blower assembly, clean the wheel and housing with compressed air and solvent, balance the assembly, and document RPM and amp draw.
What HVAC Cleaning Costs in Washington
| Item | Typical range in Washington |
|---|---|
| Whole-system HVAC cleaning (standard row house) | $450-$850 |
| Evaporator coil cleaning | $280-$420 |
| Blower motor and wheel cleaning | $180-$320 |
How do I know the HVAC cleaning was actually done?
Every duct run and component is photographed before and after, and the images are delivered as part of the standard job record - Haven Standard Clause 2, Documented Photo Record. Call (240) 318-7712 for an exact quote; estimates are free.
Why does my row house HVAC freeze up so often?
Undersized retrofit ducts restrict airflow across the evaporator coil, and Washington’s high humidity overloads the coil with moisture; cleaning restores design airflow and reduces freeze-ups. Call (240) 318-7712 for an exact quote; estimates are free.
Air Quality & Sanitizing in Washington
Washington’s sustained summer humidity and floodplain geology make microbial contamination in ductwork a local constant, not a rare exception. In Bloomingdale and Eckington, we find active mold in supply ducts on systems as young as five years old, and the layered retrofit ductwork in Georgetown and Capitol Hill creates dead zones where bacteria colonize undisturbed. Air Quality & Sanitizing here targets the source, not the symptom, with application equipment sized for narrow row-house runs.
Mold Treatment
Signs you need it
Musty odor at registers, visible growth on vent covers, or recurring respiratory symptoms that improve when away from home.
What it costs in Washington
$380-$650 for whole-system mold treatment including application, dwell time, and post-treatment verification sampling.
How we do it
We apply EPA-registered fungistat through the full duct system, let it dwell per manufacturer specification, then extract residue and photograph treated surfaces.
UV Light Installation
Signs you need it
Repeated mold recurrence after cleaning, or a system located in a damp basement or crawl space with no dehumidification.
What it costs in Washington
$320-$580 for UV-C lamp installation including mounting, wiring, and bulb replacement schedule.
How we do it
We mount a Honeywell or Aprilaire UV-C lamp at the coil or air handler, wire to the blower circuit, and verify irradiance with a meter.
What Air Quality & Sanitizing Costs in Washington
| Item | Typical range in Washington |
|---|---|
| Whole-system mold treatment | $380-$650 |
| UV-C lamp installation | $320-$580 |
| Bacteria sanitizing (standalone) | $280-$450 |
Is mold in ducts common in Washington?
Yes - the combination of 70-80% summer humidity, floodplain groundwater vapor, and unsealed retrofit ductwork creates conditions we rarely see in drier, higher-elevation suburbs. Call (240) 318-7712 for an exact quote; estimates are free.
Will UV lights prevent mold from coming back?
UV-C at the coil surface inhibits growth there, but lamps must be replaced annually and do not treat debris downstream; we specify lamp placement and maintenance schedule in writing. Call (240) 318-7712 for an exact quote; estimates are free.
Brands We Service in Washington
We stock parts and service equipment from Honeywell, Aprilaire, and Abatement Technologies, with Guardsman antimicrobial products applied where indicated. Most replacement components are available within 24 hours through our Washington, DC office. our brands
Pricing for Air Duct Cleaning in Washington, DC
| Service | Typical range in Washington |
|---|---|
| Whole-system air duct cleaning (standard row house) | $380-$720 |
| Whole-system HVAC cleaning | $450-$850 |
| Evaporator coil cleaning | $280-$420 |
| Blower cleaning | $180-$320 |
| Dryer vent cleaning | $150-$280 |
| Duct repair & sealing (per system) | $320-$650 |
| Mold treatment | $380-$650 |
| UV-C lamp installation | $320-$580 |
| Bacteria sanitizing | $280-$450 |
| Odor removal treatment | $220-$380 |
Prices increase in Washington when systems have layered retrofit ductwork requiring additional access points, or when multiple dead-end runs must be located and cleared. Every price is written and agreed before work starts - Haven Standard Clause 1 - with no per-vent add-ons.
Neighborhoods We Serve in Washington
We schedule Washington jobs from our metro office and dispatch crews to all quadrants, with most appointments available within 5-7 business days.
- Capitol Hill
- Georgetown
- Petworth
- Columbia Heights
- Shaw
- Bloomingdale
- Eckington
Service Area - Cities Near Washington
CleanRun’s Washington, DC office coordinates service throughout the immediate metro area. We do not maintain separate location pages for adjacent jurisdictions; scheduling and dispatch are handled from our Washington office for all service requests.
Serving Washington, DC - Our Local Coverage Area
We’re based in the Washington 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 Washington
No permit is required for cleaning or maintenance of existing residential ductwork in Washington, DC; permits apply only to new installation or structural modification. We carry all required business licenses and our license number is published on every proposal.
Most Washington appointments are available within 5-7 business days; we do not maintain emergency or same-day dispatch for scheduled cleaning work. Call (240) 318-7712 to confirm current availability.
We clean individual unit ductwork in Washington multi-family buildings where access is available; for buildings with centralized systems, we coordinate with property management and document our scope in writing before starting.
Call (240) 318-7712 for a free estimate with a written price before any work starts. Every job includes a Documented Photo Record and the 365-Day Done Right Promise, backed in writing.
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 Washington Customers Say
"My allergies genuinely improved. They also told me the ducts did not need sealing, which I had been quoted for elsewhere."
- Petra K."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."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.