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 Bethesda, MD
HVAC cleaning in Bethesda typically runs $450-$850 for a full system, and every job starts with a written price before we touch a single panel. We’re CleanRun Duct Repair & Cleaning, and we serve Bethesda from our Washington, DC scheduling office with crews that know the local housing stock. Call (240) 363-3380 for a free estimate.
Bethesda’s decades-long teardown-and-addition culture has left most of its 1940s-1960s colonial and rancher stock with ductwork that is a patchwork of original galvanized sheet-metal trunks spliced to flex-duct runs added during successive renovations. That creates hidden debris traps, disconnected joints buried behind new drywall, and contamination pockets that would never appear in a purpose-built newer home. We photograph every duct run before and after, so homeowners see exactly what was in there.
Why Bethesda Homes Are Different
The core neighborhoods - Edgemoor, Kenwood, Bradley Hills, and Somerset-adjacent blocks - are dominated by 1940s-1960s colonials and Cape Cods originally fitted with compact duct systems sized for 1,400-1,800 sq ft. Owners have expanded these homes to 3,000-5,000 sq ft while patching into the original ductwork, producing multi-era systems with mismatched gauges, flex-duct elbows that sag and collect debris, and return-air plenums never designed for their current loads.
Bethesda’s position in the humid continental/subtropical transition zone means summers bring sustained dew points in the 70s°F, causing condensation on uninsulated duct runs in crawl spaces and attics common in split-level construction. Homes bordering Rock Creek tributary corridors, where mature oaks create dense canopy, show return-air grilles matted with organic fine-particle debris that homeowners mistake for ordinary dust. Technicians in those pockets regularly find interior duct surfaces coated with a biofilm of decomposed pollen and mold that forms because heavy tree cover keeps exterior humidity elevated even on dry days.
Our Main Bethesda Services
Most Bethesda homeowners who call us need one of these three services. Each has its own dedicated page with full pricing and scope details.
Air Duct Cleaning in Bethesda
We clean every duct run with negative-pressure extraction - a sealed vacuum system that pulls debris out without releasing it into your living space. In Bethesda’s renovation-layered homes, we regularly find original galvanized trunks choked with construction dust from decades-old additions, plus flex-duct elbows that have sagged into debris-collecting loops behind finished walls. Every job includes a Documented Photo Record of every duct run.
Dryer Vent Cleaning in Bethesda
Dryer vent blockages are a fire hazard and efficiency killer. In Bethesda’s older homes, we often see vent runs that were rerouted during additions, creating unnecessary elbows and extended horizontal runs where lint accumulates. We clean the full vent path from appliance to termination and photograph the before-and-after condition. Dryer Vent Cleaning in Bethesda includes the written price guarantee and 365-Day Done Right Promise.
Duct Repair & Sealing in Bethesda
Disconnected joints and deteriorated flex-duct are common in Bethesda’s multi-era systems. We seal leaks with mastic and mechanical fasteners, replace damaged sections, and pressure-test the repaired system. The work is photographed, priced in writing before we start, and backed by our written guarantee. See full scope on our Duct Repair & Sealing in Bethesda page.
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 Bethesda
HVAC cleaning in Bethesda addresses the accumulated load on systems that were never designed for the square footage they now serve. The original 1950s air handler in a Kenwood colonial may now be pushing conditioned air through twice the duct volume, with an evaporator coil that hasn’t been accessed since the last renovation covered it with new drywall. We provide HVAC Cleaning as a documented service with written pricing and photo verification of every component cleaned.
Evaporator Coil Cleaning
Signs you need it
Weak airflow from registers, ice formation on refrigerant lines, or cooling that can’t keep up on humid July afternoons in Bethesda.
What it costs in Bethesda
Evaporator coil cleaning typically runs $280-$450.
How we do it
We access the coil through the plenum - the central distribution box - then apply foaming cleaner and rinse with low-pressure water, capturing all runoff so nothing drains into your furnace.
Blower Cleaning
Signs you need it
Vibration noise at startup, dust streaks on supply registers, or a blower wheel that visibly wobbles when the access panel is removed.
What it costs in Bethesda
Blower cleaning typically runs $220-$380.
How we do it
We remove the blower assembly, clean each blade with compressed air and solvent, balance the wheel, and photograph the before-and-after condition before reinstallation.
What HVAC Cleaning Costs in Bethesda
| Item | Typical range in Bethesda |
|---|---|
| Evaporator coil cleaning | $280-$450 |
| Blower cleaning | $220-$380 |
| Full HVAC system cleaning | $450-$850 |
How do I know my HVAC system was actually cleaned?
Every component is photographed before and after, and those images are delivered with your job record. If the coil or blower doesn’t look different in the after photo, we haven’t done our job.
Why does my Bethesda home’s HVAC struggle more than newer homes?
Original equipment sized for 1,500 sq ft is now serving 3,000+ sq ft through patched ductwork. Cleaning restores what efficiency remains, but the underlying mismatch is why we document everything - so you have evidence for future upgrade decisions.
Air Quality & Sanitizing in Bethesda
Air quality and sanitizing in Bethesda targets the biofilm that forms inside ducts where humid outdoor air meets cool conditioned surfaces. Homes near Rock Creek’s tributary corridors are especially prone - the heavy oak canopy traps moisture, and decomposed pollen creates a nutrient layer for mold and bacteria inside flex-duct additions that lack proper insulation. We provide Air Quality & Sanitizing with written pricing, photo documentation, and the 365-Day Done Right Promise.
Mold Treatment
Signs you need it
Musty odor when the system starts, visible spotting on register grilles, or allergy symptoms that worsen when you’re home in humid summer months.
What it costs in Bethesda
Mold treatment typically runs $350-$650 per system.
How we do it
We apply an EPA-registered antimicrobial through the duct system using a fogging device, then run the fan to distribute it evenly across all surfaces, with before-and-after photo verification from our camera.
UV Light Installation
Signs you need it
Recurring mold despite cleaning, or a system in a damp crawl space or attic where humidity control is structurally limited.
What it costs in Bethesda
UV light installation typically runs $400-$750 including the lamp and power supply.
How we do it
We mount a UV-C lamp in the supply plenum where it irradiates the coil and nearby surfaces continuously, wiring it to the blower circuit so it operates only when the system runs.
What Air Quality & Sanitizing Costs in Bethesda
| Item | Typical range in Bethesda |
|---|---|
| Mold treatment | $350-$650 |
| UV light installation | $400-$750 |
| Full air quality package | $600-$1,100 |
Is mold in my ducts common in Bethesda?
Yes, especially in homes near Rock Creek corridors where tree cover elevates humidity. The combination of original uninsulated metal and newer flex-duct additions creates multiple temperature zones where condensation forms.
Will sanitizing fix the smell permanently?
It eliminates current biological growth, but if the underlying moisture source - uninsulated ducts in a humid crawl space, for example - isn’t addressed, growth can return. We document both the treatment and the conditions so you have a record.
Brands We Service in Bethesda
We stock parts and service equipment from Aprilaire, Abatement Technologies, and Guardsman, with Rotobrush cleaning systems on every truck. Most repairs that don’t require manufacturer-specific components are completed same visit. See our brands for the full roster.
Pricing for Air Duct Cleaning in Bethesda, MD
| Service | Typical range in Bethesda |
|---|---|
| Air duct cleaning (whole system) | $350-$650 |
| Dryer vent cleaning | $150-$280 |
| Duct repair & sealing | $300-$600 |
| Evaporator coil cleaning | $280-$450 |
| Blower cleaning | $220-$380 |
| Full HVAC system cleaning | $450-$850 |
| Mold treatment | $350-$650 |
| UV light installation | $400-$750 |
Prices increase when we encounter access obstacles - finished basements with no utility room, attic systems with limited entry, or the need to cut and patch drywall to reach components. Every price is written and agreed before work starts, per Haven Standard Clause 1. No exceptions.
Neighborhoods We Serve in Bethesda
We schedule Bethesda appointments with crew dispatch coordinated from our Washington, DC office. Most homeowners receive a two-hour arrival window.
- Edgemoor
- Kenwood
- Bradley Hills
- Somerset
- Bannockburn
Service Area - Cities Near Bethesda
Our crews work throughout Montgomery County and into adjacent jurisdictions. We regularly schedule alongside Bethesda jobs in Silver Spring, MD, Rockville, MD, Gaithersburg, MD, and Waldorf, MD. Dispatch is coordinated from our Washington, DC office to optimize routing and arrival windows.
Serving Bethesda, MD - Our Local Coverage Area
We’re based in the Bethesda 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 Bethesda
No permit is required for routine cleaning or sanitizing. If our inspection reveals duct repair or modification that alters the system layout, we’ll note it in your written scope and advise if Montgomery County permitting applies.
Some Bethesda HOAs limit contractor parking or hours. We carry proof of insurance and background-check documentation for every technician, and we’ll coordinate with your property manager if your association requires advance notice.
Typically 3-5 business days for standard cleaning, though we maintain flexibility for urgent situations like post-renovation moves or real estate transactions. Call (240) 363-3380 for current availability.
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 Bethesda Customers Say
"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."My allergies genuinely improved. They also told me the ducts did not need sealing, which I had been quoted for elsewhere."
- Petra K."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.