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 Rockville, MD
Whole-system HVAC cleaning in Rockville typically runs $450-$850 for a single-family home, with most jobs scheduled within a week and completed in one day. Rockville’s mix of 1950s retrofitted ranchers, 1970s split-levels with aging fiberglass duct board, and humid Mid-Atlantic summers creates conditions we don’t see in newer suburbs. That’s why we adjust our scope for what we actually find inside the system, not what a coupon promises. Call (240) 318-7712 for a written estimate before any work starts.
Why Rockville Homes Are Different
Rockville sits in Montgomery County’s humid transition zone, where July and August dewpoints hit the low-to-mid 70s°F. Supply ducts running through unconditioned attics sweat on startup, creating persistent moisture that drives mold and dust-mite allergen buildup. The housing stock matters too: Twinbrook’s 1950s Cape Cods and ranchers were retrofitted with forced air in the 1960s and 1970s, leaving cheap duct board or early sheet-metal runs shoehorned through cavities never designed for them. Those retrofits now show kinked flex duct and collapsed elbows in knee-wall attics, trapping debris where standard brushing cannot reach. Fallsmead and Hungerford’s 1970s-80s splits and colonials carry original fiberglass duct board that has degraded and shed fiber into the airstream for decades. King Farm and Fallsgrove’s 2000s construction uses sealed modern ductwork, but even those systems collect the pollen, skin cells, and construction dust that settle in any static duct run over time.
Our Main Rockville Services
Rockville homeowners call us most often for these three services, each with its own dedicated Rockville page.
Air Duct Cleaning in Rockville
We clean every duct run with negative-pressure extraction (a large vacuum attached to the main trunk line, pulling debris toward the collection unit while brushes agitate the interior walls). In Twinbrook retrofits, we often find collapsed flex sections that must be straightened or replaced before brushing can reach the full length. Every job ends with a Documented Photo Record of every run, delivered as part of the standard job record. Read more about Air Duct Cleaning in Rockville.
Dryer Vent Cleaning in Rockville
Dryer vent blockages are a leading cause of house fires in Montgomery County. We remove lint buildup from the dryer connection through the exterior termination, measuring airflow before and after with an anemometer. Rockville’s older homes often have vent runs that exceed 25 feet or terminate under decks, both of which require specialized equipment. Read more about Dryer Vent Cleaning in Rockville.
Duct Repair & Sealing in Rockville
Leaky ducts in unconditioned attics waste 20-30% of heating and cooling energy. We seal accessible joints with mastic and replace degraded flex duct or collapsed sections, then pressure-test the system to verify results. Rockville’s retrofit-era homes benefit most, as original installations rarely included proper sealing. Read more about Duct Repair & Sealing in Rockville.
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 Rockville
Rockville’s humid summers and mixed-era housing stock make HVAC cleaning a different job than in drier or newer markets. Evaporator coils in 1970s systems often carry a decade of biological growth, while blowers in retrofitted Twinbrook homes collect debris from compromised return ductwork. We treat each component as its own scope, with a written price per system before any panel comes off. Our HVAC Cleaning service covers the full mechanical system, not just the ducts that feed it.
Evaporator Coil Cleaning
Signs you need it
Ice buildup on the coil, weak airflow from registers, or a musty smell when the AC first cycles on in Rockville’s humid July afternoons.
What it costs in Rockville
Evaporator coil cleaning typically runs $280-$450, depending on accessibility and whether the coil requires removal for cleaning.
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 before and after condition for the job record.
Blower Cleaning
Signs you need it
Dust puffing from registers at startup, uneven heating or cooling between rooms, or a blower motor that runs longer than it used to.
What it costs in Rockville
Blower cleaning and wheel balancing typically runs $220-$380, with variable-speed motors at the higher end due to assembly complexity.
How we do it
We remove the blower assembly, clean the squirrel-cage wheel and housing with compressed air and solvent, balance the wheel, and reinstall with a torque check on the set screw.
What HVAC Cleaning Costs in Rockville
| Item | Typical range in Rockville |
|---|---|
| Evaporator coil cleaning | $280-$450 |
| Blower cleaning | $220-$380 |
| Condenser cleaning | $180-$320 |
How do I know my HVAC system was actually cleaned?
Every HVAC cleaning job includes a Documented Photo Record of the evaporator coil, blower wheel, and condenser before and after work. You receive these images as part of the standard job record, not as an optional add-on.
Can HVAC cleaning fix weak airflow in my Rockville home?
It can if the restriction is at the coil or blower, which we verify with static pressure testing before quoting. Kinked ductwork, common in Twinbrook retrofits, requires duct repair instead.
Air Quality & Sanitizing in Rockville
Rockville’s humid summers create ideal conditions for biological growth inside duct systems, particularly in homes with unconditioned attics where supply ducts sweat on startup. The 1970s-80s fiberglass duct board in Fallsmead and Hungerford homes sheds fiber and traps moisture, while Twinbrook retrofits harbor mold in collapsed flex sections. Our Air Quality & Sanitizing service addresses what grows inside the system, not just what blows through it.
Mold Treatment
Signs you need it
Visible black or green growth at registers, a persistent earthy smell when the system runs, or recent water intrusion in the attic or crawl space.
What it costs in Rockville
Whole-system mold treatment typically runs $650-$1,200, depending on the extent of contamination and whether physical removal of degraded duct liner is required.
How we do it
We apply an EPA-registered antimicrobial through the duct system using a fogging device, then install a drying protocol to address the moisture source that enabled growth.
UV Light Installation
Signs you need it
Recurring mold despite prior cleaning, or a household member with immunocompromise who needs continuous biological control at the coil surface.
What it costs in Rockville
UV-C lamp installation at the evaporator coil typically runs $380-$650, including the lamp, housing, and electrical connection to the air handler.
How we do it
We mount a UV-C lamp in the return plenum upstream of the coil, wire it to the air handler’s 24V circuit, and show you the lamp status indicator during the final walkthrough.
What Air Quality & Sanitizing Costs in Rockville
| Item | Typical range in Rockville |
|---|---|
| Mold treatment | $650-$1,200 |
| UV light installation | $380-$650 |
| Bacteria sanitizing | $320-$550 |
Does mold treatment damage my ductwork?
EPA-registered antimicrobials applied at proper concentration do not degrade metal ductwork or modern flex duct, though severely degraded fiberglass duct board may need replacement rather than treatment.
How long does UV light installation take?
Most UV installations are completed in 2-3 hours, with the lamp running immediately and full biological suppression at the coil surface within 48 hours of continuous operation.
Brands We Service in Rockville
We stock parts and service equipment from Honeywell, Aprilaire, and Abatement Technologies, with most common filters, UV lamps, and sanitizer solutions available same-day. For less common Guardsman components, we typically source within 48 hours through our Washington, DC dispatch office.
Pricing for Air Duct Cleaning in Rockville, MD
| Service | Typical range in Rockville |
|---|---|
| Whole-system air duct cleaning | $450-$850 |
| Dryer vent cleaning | $150-$280 |
| Duct repair & sealing (per system) | $400-$900 |
| Evaporator coil cleaning | $280-$450 |
| Blower cleaning | $220-$380 |
| Condenser cleaning | $180-$320 |
| Mold treatment | $650-$1,200 |
| UV light installation | $380-$650 |
| Bacteria sanitizing | $320-$550 |
Prices increase with system size, accessibility difficulty (crawl space vs. attic), and the condition of existing ductwork. Every quote is a written price agreed before work starts, Haven Standard Clause 1, with no per-vent add-ons or post-arrival upsells.
Neighborhoods We Serve in Rockville
We schedule Rockville appointments with routing efficiency across Montgomery County, typically offering morning or afternoon windows within 3-5 business days of call.
- Twinbrook
- Fallsmead
- Hungerford
- King Farm
- Fallsgrove
Service Area - Cities Near Rockville
CleanRun crews serve Rockville from our Washington, DC dispatch office, with daily routes through Bethesda, MD, Silver Spring, MD, Bowie, MD, and Waldorf, MD. Scheduling is coordinated across the metro area to minimize drive time and keep appointment windows reliable.
Serving Rockville, MD - Our Local Coverage Area
We’re based in the Rockville 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 Rockville
No permit is required for cleaning or sanitizing existing ductwork in Montgomery County. Duct modifications, additions, or full replacements require a building permit from the Montgomery County Department of Permitting Services, which we handle as part of any repair or sealing scope that involves structural changes.
Most Rockville homeowners are scheduled within 3-5 business days, with morning or afternoon windows available. We do not offer same-day dispatch for duct cleaning, as proper preparation and equipment loading require advance scheduling.
King Farm and Fallsgrove HOAs generally require 24-48 hour notice for service vehicles, which we coordinate directly with the homeowner. No HOA in Rockville prohibits duct cleaning itself, though parking restrictions may affect where our van can stage equipment.
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 Rockville Customers Say
"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."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.