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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Before
AfterAir Duct Cleaning Company in Severn, MD
Air duct cleaning in Severn typically runs $350 – $650 for a whole-home system and is scheduled by appointment, not dispatched same-day. We’re Hollis Air Duct Cleaning, and our crews handle the specific challenges that come with Severn’s mix of post-WWII capes, 1980s flex-duct additions, and newer colonials near BWI. The construction dust, airport-area pollen, and humid summers here mean ductwork collects debris faster than in drier inland counties. Call (361) 326-5060 for a free estimate with a written price before any work starts.
Why Severn Homes Are Different
Severn sits in Anne Arundel County between Baltimore and Washington, and that location shapes what we find in local ductwork. The proximity to BWI Airport means construction dust from ongoing development mixes with heavy spring and fall pollen from surrounding forests and wetlands. That debris gets pulled into HVAC systems running nearly year-round thanks to humid subtropical summers and cold winters.
The housing stock tells the rest of the story. Older sections near Severna Park hold mid-century ranches and split-levels with galvanized ductwork that has accumulated decades of dust. Planned communities like Berrywood and Stillmeadows built in the 1980s and 1990s often used flex duct, which traps debris in its ribbed interior and requires specialized rotary brush cleaning rather than simple vacuuming. Crawl spaces and attics in both eras stay damp enough to promote mold growth on duct surfaces. We’ve also found dryer vents in neighborhoods near the Patapsco River clogged with a combination of lint and sandy soil tracked into homes from local terrain.
Our Main Severn Services
Most Severn homeowners call us for one of three jobs. Each has its own page with full details, pricing, and what to expect.
Air Duct Cleaning in Severn
We clean supply and return ducts with Rotobrush rotary brush systems and negative-air machines from Nikro. In Severn, we pay special attention to flex-duct runs common in Berrywood and Stillmeadows additions, where the ribbed interior traps pollen and construction dust from BWI-area development. The job includes vent covers, main trunk lines, and a post-cleaning inspection with before-and-after photos of your own ducts. Air Duct Cleaning in Severn
Dryer Vent Cleaning in Severn
Dryer vent cleaning removes lint buildup that restricts airflow and creates fire risk. In Severn, we regularly find vents packed with a mix of lint and sandy soil from the Patapsco River area, especially in homes with longer vent runs through crawl spaces or attics. We use professional-grade brushes and high-velocity vacuums, not hardware-store kits, and we check airflow before and after. Dryer Vent Cleaning in Severn
Duct Sealing in Severn
Duct sealing closes leaks in supply and return lines using mastic sealant and metal-backed tape, not duct tape. In Severn’s older homes with galvanized ductwork, we often find separated joints and corrosion holes that bleed conditioned air into attics and crawl spaces. Sealing drops energy bills and reduces the dust and humidity that leak points pull into the system. Duct Sealing in Severn
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 Severn
We stock parts and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman for fast turnaround on most Severn jobs. If your system uses a specific brand not listed, we source it quickly through our Baltimore office. our brands
Pricing for Air Duct Cleaning Company in Severn, MD
| Service | Typical range in Severn |
|---|---|
| Whole-home air duct cleaning (single system) | $350 – $650 |
| Additional HVAC system (dual-zone homes) | $200 – $400 |
| Dryer vent cleaning (standard run) | $120 – $250 |
| Dryer vent cleaning (long run or rooftop termination) | $200 – $350 |
| Duct sealing (whole system, mastic method) | $800 – $1,500 |
| Duct sealing (partial, targeted leaks) | $300 – $600 |
| Mold remediation prep (antimicrobial treatment) | $150 – $300 |
| Vent cover removal and deep cleaning | $75 – $150 |
Prices in Severn run toward the higher end when homes have extensive flex duct, multiple attic or crawl-space runs, or heavy buildup from construction dust near BWI. We write the price down before any work starts, and that number does not move at the door.
Neighborhoods We Serve in Severn
We schedule appointments across Severn with crews dispatched from our Baltimore office. Most neighborhoods fall within a single-day routing window.
- Berrywood
- Stillmeadows
- Severna Park (Severn section)
- Patapsco Ridge
- Arundel Mills area
Service Area – Cities Near Severn
Our crews work throughout central Anne Arundel County and into adjacent communities. We regularly schedule jobs in Odenton, MD, Jessup, MD, Gambrills, MD, and Elkridge, MD, often routing same-day clusters when multiple homeowners in an area book together.
Serving Severn, MD - Our Local Coverage Area
We’re based in the Severn 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 Severn
No permit is required for standard residential air duct cleaning or dryer vent cleaning in Anne Arundel County. Duct sealing that involves modifying ductwork may need review if your home is in an HOA with specific maintenance rules, but we handle the documentation if it applies. Call (361) 326-5060 and we’ll confirm what’s needed for your property.
We typically book within 3 – 5 business days, with routing from our Baltimore office. We do not promise same-day dispatch, but we do arrive inside the quoted window and call 30 minutes before. Call (361) 326-5060 to check current availability.
We cover the full Severn area, including communities near Arundel Mills, Patapsco Ridge, and the older sections toward Severna Park. If you’re unsure whether your address falls in our standard routing, call (361) 326-5060 and we’ll confirm.
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 Severn 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.