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 Gaithersburg, MD
HVAC cleaning in Gaithersburg typically runs $320-$580 for a complete system, with most jobs scheduled within a week. We’re CleanRun Duct Repair & Cleaning, and we dispatch crews to Gaithersburg from our Washington, DC office. The homes here present a specific set of problems you won’t find in nearby Rockville or Germantown: aging Montgomery Village ductwork pushing 50 years, and newer Kentlands builds with moisture-trapping designs that breed mold in crawlspace runs. Call (240) 255-4519 for a written estimate before any work starts.
Why Gaithersburg Homes Are Different
Gaithersburg sits at the Piedmont’s edge where Seneca Creek creates localized humidity pockets, pushing indoor relative humidity higher than surrounding upland areas during mid-Atlantic summers. That moisture load accelerates mold colonization inside ductwork, especially in slab-on-grade homes and supply runs near unconditioned spaces.
The housing stock splits sharply. Montgomery Village, one of the largest planned communities in the United States, contains thousands of homes built between 1966 and the mid-1980s with original sheet-metal ductwork now 40 to 55 years old. We regularly find degraded fiberglass duct liner shedding particulate into the airstream, particularly in 1970s-era two-story colonials where furnace closet design trapped humidity against duct board for decades. Meanwhile, Kentlands and Lakelands homes from the late 1980s through the 2000s suffer from poorly balanced duct systems in conditioned crawlspaces, a design compromise that creates condensation issues distinct from the aging problems of the Village.
Our Main Gaithersburg Services
Gaithersburg homeowners call us most often for these three services:
Air Duct Cleaning in Gaithersburg
We clean the full duct network, from plenum (the main distribution box) to every register, using negative-pressure extraction that pulls debris out rather than pushing it deeper. In Montgomery Village, we often remove decades of accumulated material from original flex duct that predates modern filtration standards. Every job ends with a Documented Photo Record of every run. Air Duct Cleaning in Gaithersburg is quoted with a written price before work begins.
Dryer Vent Cleaning in Gaithersburg
Lint accumulation in dryer vents is a fire hazard, and Gaithersburg’s mix of older ranch homes with long vent runs and newer townhomes with shared ducting presents distinct access challenges. We clean the full vent path from appliance to termination, verify airflow with a manometer, and photograph the before and after condition. Dryer Vent Cleaning in Gaithersburg carries the same written-price guarantee.
Duct Repair & Sealing in Gaithersburg
Disconnected runs, degraded flex duct, and failed sealing tape are common in Montgomery Village’s original installations, while Kentlands homes often show design-related pressure imbalances. We repair or replace damaged sections and seal leaks with mastic or metal-backed tape rated for duct applications. Duct Repair & Sealing in Gaithersburg includes the 365-Day Done Right Promise in writing.
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 Gaithersburg
HVAC cleaning in Gaithersburg addresses two distinct problems: the degraded components in Montgomery Village’s aging systems and the mold-prone coils and blowers in newer homes where elevated humidity from Seneca Creek’s low-lying pockets creates condensation issues. We clean the full mechanical system, not just the ducts, because dirty coils and blowers recirculate contamination into otherwise clean ductwork. Our HVAC Cleaning service is built around the same documented approach we apply to every Gaithersburg job.
Evaporator Coil Cleaning
Signs you need it
Reduced airflow from registers, ice formation on the coil cabinet, or musty odors when the AC cycles on in humid summer months.
What it costs in Gaithersburg
Evaporator coil cleaning typically runs $180-$340 depending on accessibility and contamination level.
How we do it
We access the coil through the plenum or service panel, 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
Uneven heating or cooling across rooms, excessive dust at registers shortly after duct cleaning, or a blower motor laboring louder than previous seasons.
What it costs in Gaithersburg
Blower assembly cleaning typically runs $160-$280 for standard residential units.
How we do it
We remove the blower assembly, clean the wheel and housing with compressed air and solvent, balance the wheel, and reinstall with torque to manufacturer spec.
What HVAC Cleaning Costs in Gaithersburg
| Item | Typical range in Gaithersburg |
|---|---|
| Evaporator coil cleaning | $180-$340 |
| Blower assembly cleaning | $160-$280 |
| Full HVAC system cleaning (coil, blower, housing) | $320-$580 |
How do I know my HVAC system needs cleaning, not just the ducts?
If you still smell musty air or see dust at registers after duct cleaning, the contamination is likely in the coil or blower. We inspect these components with a borescope during every estimate and show you what the camera finds.
Can HVAC cleaning fix the humidity problems in my Gaithersburg home?
Cleaning removes mold and debris that block proper condensation drainage, but it does not alter the fundamental humidity load from Gaithersburg’s terrain. We document what we find and note if additional dehumidification equipment is warranted.
Air Quality & Sanitizing in Gaithersburg
Air quality and sanitizing in Gaithersburg targets the mold and bacterial growth accelerated by the area’s elevated humidity, particularly in Montgomery Village’s aging duct liner and Kentlands’ condensation-prone crawlspace runs. We treat the source, not just the symptom, with application methods documented in the photo record. Our Air Quality & Sanitizing service includes post-treatment verification so you can see the difference.
Mold Treatment
Signs you need it
Visible mold at registers, persistent musty odor when the system runs, or recent water intrusion in basements or crawlspaces near duct runs.
What it costs in Gaithersburg
Mold treatment for residential duct systems typically runs $280-$520 depending on extent and accessibility.
How we do it
We apply an EPA-registered fungistat to affected duct runs using mechanical fogging equipment, then verify coverage with UV fluorescence and photograph the results.
UV Light Installation
Signs you need it
Recurring mold after professional cleaning, family members with allergy symptoms that worsen when the HVAC cycles, or a system in a chronically damp location.
What it costs in Gaithersburg
UV-C lamp installation at the coil or plenum typically runs $340-$580 including hardware and labor.
How we do it
We mount a UV-C lamp at the coil surface or supply plenum, wire to the blower circuit for automatic operation, and verify irradiance with a meter before commissioning.
What Air Quality & Sanitizing Costs in Gaithersburg
| Item | Typical range in Gaithersburg |
|---|---|
| Mold treatment (duct system) | $280-$520 |
| UV-C lamp installation | $340-$580 |
| Bacteria sanitizing (whole system) | $220-$420 |
Is the sanitizing chemical safe for children and pets?
We use EPA-registered products applied according to manufacturer label directions, with dwell times and ventilation requirements documented in your job record. The product is rated for occupied residential use when applied correctly.
How long does mold treatment take to work?
Active mold is neutralized during application, but you should notice reduced odor within 24-48 hours as the system cycles and treated air moves through the home. We schedule a follow-up photo inspection at 30 days under the 365-Day Done Right Promise.
Brands We Service in Gaithersburg
We stock parts and service equipment from Honeywell, Aprilaire, and Abatement Technologies, with most common filters, UV lamps, and sanitizing agents available without special order. Turnaround on brand-specific components is typically same-day or next-day for Gaithersburg appointments. See our brands for the full equipment roster.
Pricing for Air Duct Cleaning in Gaithersburg, MD
| Service | Typical range in Gaithersburg |
|---|---|
| Air duct cleaning (whole system) | $280-$520 |
| Dryer vent cleaning | $120-$220 |
| HVAC cleaning (coil + blower) | $320-$580 |
| Evaporator coil cleaning only | $180-$340 |
| Blower assembly cleaning only | $160-$280 |
| Duct repair & sealing (per system) | $240-$680 |
| Mold treatment | $280-$520 |
| UV-C lamp installation | $340-$580 |
| Bacteria sanitizing | $220-$420 |
| Odor removal treatment | $180-$340 |
Prices in Gaithersburg run toward the higher end when homes have extensive flex duct degradation, multiple crawlspace access points, or original Montgomery Village ductwork requiring additional time for careful handling. Every price is written and agreed before work begins, Haven Standard Clause 1, with no per-vent add-ons or post-arrival upsells.
Neighborhoods We Serve in Gaithersburg
We schedule Gaithersburg appointments with routing that groups nearby jobs, keeping arrival windows predictable and allowing same-week booking for most service types.
- Montgomery Village
- Kentlands
- Lakelands
- Quince Orchard
- Washingtonian Center
Service Area - Cities Near Gaithersburg
CleanRun crews serve Gaithersburg homeowners and also schedule regularly in Rockville, MD, Bethesda, MD, and Silver Spring, MD. Dispatch and scheduling are coordinated from our Washington, DC office, with local crews covering the full Montgomery County corridor.
Serving Gaithersburg, MD - Our Local Coverage Area
We’re based in the Gaithersburg 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 Gaithersburg
Standard residential duct cleaning and HVAC maintenance do not require permits in Montgomery County. Duct modifications that alter the building envelope or involve new penetrations may need county approval; we note this in writing if your job scope triggers permitting requirements.
Most Gaithersburg appointments are available within 3-7 business days, with routing optimized by neighborhood to keep arrival windows tight. Emergency mold or severe airflow restrictions are prioritized based on crew availability.
Interior duct cleaning and HVAC service typically do not require HOA notification. Work involving exterior vent modifications or shared mechanical spaces in townhome clusters may need documentation; we provide written scope details on request for HOA submission.
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 Gaithersburg 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."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."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.