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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AfterAir Duct Cleaning Company in Ellicott City, MD
Air duct cleaning in Ellicott City runs between $350 and $650 for a typical single-family home, with flood-damaged systems on Historic Main Street often landing at the higher end due to sediment remediation. We’re Hollis Air Duct Cleaning, and our crews serve Ellicott City from our Washington, DC dispatch office. The Patapsco River valley makes this market unlike any other in Howard County: the same humidity pocket that breeds mold in summer ducts also leaves flood silt behind after major storm events. Call (361) 326-5060 for a written estimate before any work starts.
Why Ellicott City Homes Are Different
Ellicott City sits in a bowl. The Patapsco River valley channels humid summer air straight into the town, and that trapped moisture keeps ductwork damp longer than in surrounding Howard County communities. We’ve pulled standing water from trunk lines in low-lying homes near Main Street that had dried out on the ridgelines above Route 40 weeks earlier.
The housing stock splits the work in two. Along Historic Ellicott City’s Main Street corridor, 18th- and 19th-century stone and brick mill buildings and tight rowhouses rarely have modern duct systems. Most rely on radiator heat or window units with retrofitted ductwork that needs careful handling. The suburban hillsides off Route 40 and near Centennial Park hold mid-to-late 20th-century split-levels and colonials with original 1970s-90s sheet-metal trunk-and-branch systems. Those older metal systems collect decades of dust and, in flood zones, the telltale silt line left by the 2016 and 2018 Patapsco floods.
No neighboring town has this recurring flood-to-ductwork problem. When our technicians open a floor register on Main Street and spot that horizontal sediment ring inside the duct boot, we know the system took on river water. That changes the job from standard cleaning to full decontamination. The Garrison Standard requires us to document it, explain it, and price the remediation in writing before we start.
Our Main Ellicott City Services
Ellicott City homeowners call us most often for these three services, each with its own dedicated local page:
Air Duct Cleaning in Ellicott City
Our rotary brush and negative-air method work for both the retrofitted ductwork in Main Street’s historic buildings and the full sheet-metal systems in the suburbs off Centennial Lane. In Ellicott City, we pay special attention to mold-prone low-lying runs and flood-silt remediation where the Patapsco has backed up. Every job gets a written price upfront and the 365-Day Done Right Promise. Air Duct Cleaning in Ellicott City
Dryer Vent Cleaning in Ellicott City
Dryer vent blockages are a fire hazard, and Ellicott City’s older rowhouses on Main Street often have convoluted vent runs through multiple stories of masonry. We clean the full run with rotary tools and inspect the exterior termination for proper airflow. Background-checked, uniformed technicians; price written before work begins. Dryer Vent Cleaning in Ellicott City
Duct Sealing in Ellicott City
Leaky ducts waste conditioned air and pull humid valley air into the system. We seal with mastic and mechanical fasteners, focusing on the joints and boots that Ellicott City’s humidity and freeze-thaw cycles stress hardest. The 365-Day Done Right Promise covers our sealing work for a full year. Duct Sealing in Ellicott City
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.
Brands We Service in Ellicott City
We stock parts and filters from Honeywell, Aprilaire, and Guardsman, and we clean with Rotobrush rotary systems and Nikro negative-air machines. Most filter replacements and component swaps happen same visit. See our brands for the full roster.
Pricing for Air Duct Cleaning Company in Ellicott City, MD
| Service | Typical range in Ellicott City |
|---|---|
| Standard residential air duct cleaning (single system) | $350 – $650 |
| Flood-silt remediation (post-Patapsco event) | $550 – $950 |
| Mold-contaminated duct decontamination | $600 – $1,100 |
| Dryer vent cleaning (standard run) | $120 – $220 |
| Dryer vent cleaning (multi-story / complex routing) | $180 – $320 |
| Duct sealing (per system, mastic method) | $800 – $1,500 |
| Return vent cleaning (additional) | $75 – $150 |
| Main trunk line cleaning (additional if heavily contaminated) | $150 – $300 |
| HVAC blower compartment cleaning | $100 – $200 |
| Filter upgrade to HEPA (Honeywell / Aprilaire) | $85 – $180 |
What pushes Ellicott City prices higher: flood silt requiring full remediation rather than standard vacuuming, mold growth from valley humidity, and access difficulty in historic structures with retrofitted ductwork. What keeps them predictable: Hollis writes one flat price per system before any work starts. No per-vent add-ons, no surprises at the door.
Neighborhoods We Serve in Ellicott City
Our crews cover the full Ellicott City area, from the historic core to the suburban ridges. Scheduling runs from our Washington, DC office, and we typically book within a few business days.
- Historic Ellicott City / Main Street corridor
- Centennial Park area
- Route 40 corridor and surrounding hillsides
- Fonthill
- Timberleigh
Service Area – Cities Near Ellicott City
We work throughout central Howard County and into adjacent communities. Homeowners in Columbia, MD, Fulton, MD, Savage, MD, and Jessup, MD can schedule the same Hollis service with the same written pricing and 365-Day Done Right Promise.
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 About Air Duct Cleaning Company in Ellicott City
We prioritize flood-silt calls in the Main Street corridor and schedule them as our next available slot, typically within 48 – 72 hours. Call (361) 326-5060 and mention flood damage so we dispatch technicians with remediation equipment, not just standard cleaning tools.
Standard cleaning and sealing inside existing ductwork rarely require permits. If we discover flood damage requiring duct replacement in a historic structure, we’ll flag any Historic District Commission requirements before work proceeds and document accordingly.
Yes. We cover 21042, 21043, and the surrounding unincorporated addresses. Scheduling and dispatch are coordinated from our Washington, DC office, with crews arriving inside the quoted window. Call (361) 326-5060 to confirm your address and get a free written estimate.
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 Ellicott City Customers Say
"Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H.