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.
Fast, Reliable HVAC Cleaning Across Ellicott City
HVAC cleaning in Ellicott City means dealing with a specific set of conditions that don’t show up in neighboring Howard County suburbs. The Patapsco river-valley humidity, the flood history in the lower historic district, and the original flex ductwork in hundreds of 1970s and 80s colonials along Route 40 and Centennial Lane all combine to make this a place where what’s inside your ducts actually matters. We’re CleanRun Air Duct Cleaning, and we’ve been documenting what we find inside Ellicott City ductwork since 2013. Every job starts with a written price before a single panel comes off, and every job ends with a photo record of every duct run. Call (806) 606-6902 to schedule.
Why CleanRun Air Duct Cleaning Is Ellicott City’s Preferred HVAC Cleaning Company
Ellicott City homeowners don’t respond to coupons. They respond to evidence. That’s why our crews carry inspection cameras before they carry cleaning tools. When a homeowner on Frederick Road asks what they’re paying for, we show them the before photo: the silt line, the mold bloom, the crushed flex run. Then we clean it. Then we show them the after photo. That’s the whole transaction, and it’s why our HVAC Cleaning team gets referred from one Ellicott City street to the next.
The 365-Day Done Right Promise applies to every job we do in Ellicott City. It’s not a marketing line. It’s a written guarantee included with the job record. If the work isn’t right, we make it right within a year. No manager approval required. That’s Haven Standard Clause 7, and we put it in writing before we start.
Scheduling for Ellicott City is coordinated through our Washington, DC office, and crews dispatch to Ellicott City daily. We know the difference between a Turf Valley colonial and a lower Old Ellicott City rowhouse, because the ductwork inside them behaves completely differently. Tomas Reyes, who leads CleanRun, has walked enough Ellicott City basements to know that a disconnected return in a split-level off Route 40 is usually pulling crawlspace air, not attic air. That’s the kind of thing you find when you actually look.
Every technician is background-checked, uniformed, and identified by name before arrival. Every job is quoted in writing before any work begins. No exceptions. That’s Haven Standard Clause 1, and it’s the reason Ellicott City homeowners who’ve been burned by lowball coupons call us instead.
Our HVAC Cleaning Services in Ellicott City

We clean the whole system, not just the visible registers. Here’s what that means in an Ellicott City house.
Evaporator Coil Cleaning
The evaporator coil sits above your furnace or inside your air handler, and in Ellicott City’s humid summers it becomes a condensation magnet. A coated coil forces your system to run longer to hit the thermostat, which adds humidity back into the house, which makes the coil dirtier. That’s the cycle we break. We pull the coil, clean it with professional-grade coil cleaner, and document the before and after. A typical evaporator coil cleaning in Ellicott City runs $180-$320, depending on access and coil type.

Blower Cleaning
Your blower motor moves every cubic foot of air you breathe. In lower Old Ellicott City homes with flood history, we regularly find dried sediment caked on the blower wheel, which throws the wheel out of balance and strains the motor. On St. Paul Street, we opened a supply run in a 19th-century brick rowhouse retrofitted with flex duct and found a hard silt line 14 inches up the duct wall from the 2018 flood. The blower motor was coated in dried sediment, and three registers had mold growth behind the grilles. We performed full source removal under negative pressure with HEPA filtration, then sealed the disconnected runs that had been pulling crawlspace air for years. Blower cleaning in Ellicott City typically runs $140-$220.

Condenser Cleaning
The outdoor condenser unit on an Ellicott City property deals with pollen in spring, cottonwood in June, and the fine silt that the Patapsco valley contributes to everything. A clogged condenser coil raises head pressure and shortens compressor life. We clean the coil fins, clear debris from the housing, and check the refrigerant lines while we’re there. Condenser cleaning runs $120-$200 for most Ellicott City homes, including coil combing and fin straightening where needed.

Air Handler Cleaning
Air handlers in Ellicott City basements and attics collect what the ducts deliver: dust, moisture, and occasionally mold. We clean the blower assembly, the cabinet interior, the condensate pan and line, and the coil, then treat the surfaces to resist microbial regrowth. This is the service most often skipped by basic duct cleaners, and it’s the one that determines whether your cleaning lasts six months or three years. Air handler cleaning in Ellicott City runs $220-$380, with coil treatment included.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Before
AfterTrusted Brands We Service in Ellicott City
We work on all major HVAC equipment, and we carry or can source parts quickly for Trane, Carrier, Lennox, Rheem, Goodman, and York systems common across Ellicott City’s housing stock. For the cleaning and remediation side, we run equipment from Rotobrush, Nikro, and Abatement Technologies, trade-recognized brands you can look up independently and see what professional-grade means. No shop-vacs. No hardware-store attachments. Just negative-pressure extraction systems with HEPA filtration, the kind of equipment that actually removes contaminants instead of stirring them up. When a Guardsman coil treatment is specified, we apply it and include the product name in your written job record.
Common HVAC Cleaning Problems We See in Ellicott City Homes

- Post-flood silt and mold in lower Old Ellicott City. The Tiber Branch floods of 2016 and 2018 pushed contaminated water into duct systems along Main Street and surrounding blocks. Silt lines and mold blooms remain inside those ducts, invisible without a camera inspection, in homes where visible flood repairs were finished years ago.
- Crushed or disconnected flex duct in 1970s-1990s homes. The original flex duct in Route 40, Centennial, and Turf Valley colonials is often collapsed at the elbows or pulled loose at the boot connections. A basic register vacuuming misses this entirely. We find it because we run a camera through every duct run before cleaning begins.
- Valley humidity accelerating mold regrowth. Ellicott City’s position in the Patapsco watershed traps summer humidity and slows drying after rain. If you clean ducts without treating the evaporator coil and air handler surfaces, mold recolonizes within months. We include coil treatment and surface sanitizing as standard on systems that need it.
- Return duct leakage pulling crawlspace air. Split-levels and colonials across Ellicott City often have return ducts running through unconditioned crawlspaces. When those ducts are disconnected or torn, your HVAC system pulls damp, musty crawlspace air into your living space. We identify the leakage points with the camera, then seal them with mastic and aluminum tape, not duct tape.
Pricing for HVAC Cleaning in Ellicott City, MD
A full HVAC cleaning in Ellicott City, including evaporator coil cleaning, blower cleaning, air handler cleaning, and coil treatment, typically runs $450-$800 for a single system. Smaller apartments or condos in Ellicott City’s newer developments may fall in the $300-$450 range. Larger homes with multiple systems, or properties in lower Old Ellicott City with documented flood contamination, can reach $900-$1,200 when source removal and sealing work are required.
| Service | Typical Ellicott City Price |
|---|---|
| Evaporator Coil Cleaning | $180-$320 |
| Blower Cleaning | $140-$220 |
| Condenser Cleaning | $120-$200 |
| Air Handler Cleaning (with coil treatment) | $220-$380 |
| Full HVAC Cleaning (single system) | $450-$800 |
| Duct Sealing / Disconnected Run Repair | $75-$150 per access point |
You get the written price before any work starts. You approve it. Then we clean. No surprises, no “discovered damage” upcharges, no per-vent games. That’s Haven Standard Clause 1, and it applies to every Ellicott City address we serve. If you’ve got a written estimate from another company, bring it. We’ll put our number next to it in writing, free. That’s the Free Second Opinion, and it’s available to every Ellicott City homeowner.
We Also Serve Cities Near Ellicott City

Our crews regularly work throughout Howard County and the surrounding area. That includes HVAC Cleaning in Ellicott City itself, plus Columbia, Olney, Laurel, and Catonsville. Each area has its own housing stock and its own duct problems, and we approach each one differently. If you’re in one of these nearby communities, the same written-price guarantee and photo documentation apply.
Serving Ellicott City, MD - Our Local Coverage Area
We’re based in the Ellicott City 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 - HVAC Cleaning in Ellicott City

The only way to know is a camera inspection. Visible flood damage was repaired years ago in most Ellicott City properties, but what happened inside the ducts wasn’t addressed. If your home is in the lower historic district near Main Street or the Tiber Branch watershed, there’s a real chance your ducts carry silt lines or mold from those events. We inspect every duct run with a camera before cleaning, and we include the photos in your job record. If you’re not sure, the inspection is part of the service. Call (806) 606-6902 to schedule an HVAC cleaning that starts with evidence, not guesswork.
Because most Ellicott City duct cleanings skip the evaporator coil and air handler. Mold in valley-humidity conditions recolonizes from those surfaces within months if they’re not treated. We clean the coil, the blower, the cabinet interior, and the condensate pan, then apply a coil treatment that resists microbial growth. That’s the standard we follow on every job. For a cleaning that lasts longer than a season, call (806) 606-6902 and get a written price before anything starts.
A basic duct cleaning is register vacuuming. It removes loose dust visible at the openings. Source removal, the NADCA standard, means cleaning the entire HVAC system under negative pressure so contaminants are extracted from the duct interior, the coil, the blower, and the air handler, not just pushed around. We do source removal on every Ellicott City job, with HEPA filtration on the extraction equipment. The difference is visible in the photos we deliver.
Yes. We identify crushed or disconnected flex runs during the camera inspection, then we repair or reseal them as part of the job when it’s within the written scope. If the damage is extensive, we’ll document it and give you a written price for the repair before doing anything. Route 40 and Centennial homes are full of original flex duct that’s been crushed for years. A cleaning that ignores it isn’t really a cleaning. Call (806) 606-6902 and we’ll show you what’s actually inside your ducts.
More often. Columbia’s open suburban terrain drains humidity faster. Ellicott City’s position in the Patapsco valley traps moisture, which means dust mites, mold spores, and biological growth inside ducts happen faster here. For most Ellicott City homes, we recommend a full HVAC cleaning every 2-3 years. Homes in the lower historic district or with flood history should be inspected annually. For a written price on your system, call (806) 606-6902.
Get a Written Price for HVAC Cleaning in Ellicott City
You’ll get a written price before any work starts. You’ll get a camera inspection and a photo record of every duct run, before and after. You’ll get the 365-Day Done Right Promise in writing. And you’ll get a team that knows Ellicott City’s housing stock and its specific problems, from the flood silt of the lower district to the crushed flex duct in a Turf Valley split-level. Call (806) 606-6902 to schedule your HVAC cleaning in Ellicott City. Tomas Reyes and the CleanRun team answer the phone.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning, serving Ellicott City since 2013.




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