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 Air Duct Cleaning Across Havre de Grace
Air duct cleaning in Havre de Grace typically runs $350 – $650 for a whole-house residential system, and we schedule most jobs within 3 – 5 business days. Our crews serve Havre de Grace directly from our Baltimore office, so we’re familiar with the waterfront homes near the Susquehanna, the mid-century ranches off Route 155, and the historic Victorians downtown. Call (361) 326-5060 for a free written estimate.
We’ve worked in Havre de Grace long enough to know that duct problems here aren’t the same as they are in Aberdeen or Bel Air. The humidity coming off the Chesapeake Bay and the river’s tidal push create conditions you simply don’t see inland. That local knowledge changes what we look for, what we test, and what we recommend.
Why Hollis Air Duct Cleaning Is Havre de Grace’s Preferred Air Duct Cleaning Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. In Havre de Grace, that track record matters because waterfront ductwork problems require more than a standard brush-and-vac job. We’ve built our reputation here on showing up when we said we would, pricing the work in writing before we touch anything, and standing behind it for a full year.
Our technicians are background-checked, uniformed, and trained to The Garrison Standard. That means arriving inside the quoted window, explaining what the equipment does in plain terms, and leaving the site clean. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
The 365-Day Done Right Promise covers every job we do in Havre de Grace. If the work fails within a year, we return and make it right at no charge, including a free second visit. That promise is written down on every invoice, not implied.
Air Duct Cleaning Services in Havre de Grace
Air Duct Cleaning Services in Havre de Grace cover the full removal of dust, debris, and microbial growth from your supply and return ductwork using professional-grade equipment. A typical residential whole-system cleaning in Havre de Grace runs $350 – $650, depending on the size of the home, the accessibility of the duct runs, and whether we find moisture or mold that requires additional remediation. Most Havre de Grace homeowners schedule this service every 3 – 5 years, or sooner after a flooding event or musty odor complaint.
Residential Duct Cleaning
We clean the complete duct network in your home, from the main trunk lines to the individual supply and return branches. In Havre de Grace’s older homes, we often find original galvanized ductwork in crawl spaces that has corroded from decades of tidal humidity. We document what we find before we start, so you know whether cleaning is sufficient or replacement is the smarter long-term fix.

Commercial Duct Cleaning
Businesses along Revolution Street and in the waterfront commercial district need clean ducts for employee health and HVAC efficiency. We use Nikro negative-air machines and Rotobrush rotary systems to handle larger commercial systems without disrupting your operation. Pricing for commercial work in Havre de Grace starts around $800 and scales with system complexity.

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.
HVAC Duct Cleaning in Havre de Grace
HVAC Duct Cleaning in Havre de Grace addresses the entire forced-air system, including the blower assembly, evaporator coil, and plenum, not just the visible vents. Because Havre de Grace’s humidity often exceeds 60% year-round, these components are prone to mold and dust-mite proliferation that reduces airflow and triggers respiratory issues. A full HVAC duct cleaning in Havre de Grace typically costs $450 – $850, with the higher end reflecting coil and blower access in tighter historic homes.
Video Inspection and Documentation
We feed a camera through your ductwork before and after cleaning. In Havre de Grace, this step is especially critical for insurance documentation after water intrusion. You see what we see. The insurer sees what we see. No guesswork.
Negative-Air Method with HEPA Filtration
Our Nikro negative-air machines create suction throughout the duct system while Rotobrush agitation tools loosen debris. HEPA filtration captures particles as small as 0.3 microns. This matters in Havre de Grace, where pollen, river sediment, and mold spores are constant concerns.
Trusted Brands We Service in Havre de Grace
We carry equipment and filtration products from Rotobrush, Nikro, Aprilaire, Abatement Technologies, and Guardsman. These are the same brands commercial remediation crews use, not hardware-store vacuums with a brush attachment. For Havre de Grace homeowners, that means parts and filters are available without long lead times. If your system needs a specific Aprilaire media filter or an Abatement Technologies HEPA upgrade after a moisture event, we stock it or source it fast. Our technicians explain what each component does and why it matters for your specific home, whether you’re in a floodplain Victorian or a 1970s ranch off Juniata Street.
Common Air Duct Cleaning Problems We See in Havre de Grace Homes
- Hidden moisture in tidal-influenced crawl spaces. Even without visible flooding, the Susquehanna’s tidal push can raise humidity in crawl spaces below the 100-year floodplain. Ductwork in these areas stays damp, promoting mold that standard cleaning alone won’t fix.
- Corroded galvanized ductwork in pre-1950 homes. The historic rowhouses and Victorians near downtown Havre de Grace often contain original metal duct runs that have rusted through from decades of salt-air exposure. Pitting and rust-through mean replacement, not just cleaning.
- Post-storm microbial growth after “minor” water intrusion. Homeowners sometimes assume a few inches of crawl-space water means a simple cleanup. But if ducts absorbed moisture and grew mold before drying, cleaning without source removal and antimicrobial treatment spreads spores through the house.
- Insurance documentation gaps. Insurers in Maryland increasingly require moisture readings and photo evidence before approving duct remediation after flood events. We provide pin-type moisture logs, thermo-hygrometer readings, and before-and-after video to close that gap.
Pricing for Air Duct Cleaning in Havre de Grace, MD
Whole-house residential air duct cleaning in Havre de Grace typically runs $350 – $650. HVAC duct cleaning with blower and coil access runs $450 – $850. Commercial systems start around $800 and scale with square footage and duct complexity. These are whole-system prices, not per-vent teaser rates that balloon once the technician arrives.
What moves the price: accessibility of duct runs in crawl spaces or attics, the presence of mold requiring antimicrobial treatment, and whether video documentation is needed for insurance. We give you one flat price per system, agreed in writing, before any work starts. No per-vent add-ons. No equipment fees at the door.
Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Havre de Grace
Our crews regularly work in Havre de Grace and the surrounding communities, including Aberdeen, Abingdon, Bel Air, and Edgewood. Whether you’re on the waterfront or inland, the same Garrison Standard applies: written price, written guarantee, background-checked technicians, and a clean site when we leave. Our Air Duct Cleaning team coordinates dispatch from our Baltimore office to reach these areas efficiently.
Serving Havre de Grace, MD - Our Local Coverage Area
We’re based in the Havre de Grace 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 Havre de Grace
We can inspect your ducts within 24 – 48 hours after a flood event, but we do not clean them until moisture levels are documented and the source of water intrusion is controlled. Cleaning wet ducts spreads mold and can void your insurance coverage. Call (361) 326-5060 for emergency inspection scheduling.
We use pin-type moisture meters and camera inspection to assess rust, pitting, and microbial growth inside the duct runs. If the metal is structurally compromised or mold has penetrated the duct liner, replacement is the only safe option. We document our findings with photos and moisture logs so you and your insurer can make an informed decision.
The river’s tidal push can raise groundwater and humidity in crawl spaces even when there’s no visible flooding, especially in the 100-year floodplain areas near the waterfront. This creates chronic damp conditions inside ductwork that standard cleaning won’t resolve without moisture mapping and targeted remediation. We check for this on every waterfront home inspection in Havre de Grace.
Yes. We provide dated moisture readings, before-and-after video inspection, photos of affected ductwork, and a detailed scope of work. This documentation package has been accepted by insurers handling post-storm claims in Havre de Grace, including properties affected by Tropical Storm Lee and subsequent flooding events.
Havre de Grace’s position at the confluence of the Susquehanna River and Chesapeake Bay creates humidity levels and tidal water pressure that inland towns like Bel Air simply don’t experience. Ductwork here is more likely to harbor hidden moisture and mold, requiring inspection protocols and documentation standards that drier climates don’t demand. Our crews are trained specifically for these waterfront conditions.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Havre de Grace since 2004.




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