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 Baltimore Highlands
Air duct cleaning in Baltimore Highlands typically runs $350 – $650 for a full residential system, and our crews can usually schedule within a few days of your call. If you’re noticing musty air when the AC kicks on, uneven temperatures between rooms, or dust that resettles within hours of cleaning, your ductwork is likely the culprit. In Baltimore Highlands, where the brick rowhouses along Annapolis Road and the cape-style homes near Patapsco Avenue still carry their original 1940s and ’50s galvanized duct systems, these symptoms are nearly universal.
We’re Hollis Air Duct Cleaning, and we’ve worked in enough Baltimore Highlands basements to know what your system looks like before we arrive. Our scheduling is coordinated from our Baltimore office, and our technicians serve Baltimore Highlands directly. That means no all-day windows, no crews driving in from counties away, and no surprises when we open the basement door and find asbestos-wrapped ducts or coal-era soot packed into galvanized steel. Call us at (361) 326-5060 for a free written estimate.
Why Hollis Air Duct Cleaning Is Baltimore Highlands’s Preferred Air Duct Cleaning Company
Baltimore Highlands homeowners have long memories for which contractors show up and which ones ghost. We’ve built our reputation here by doing the opposite of what the coupon-mailer outfits do. Our Air Duct Cleaning team arrives in a marked van, in uniform, with a written price in hand before touching a single register.
Our reviews from Baltimore Highlands customers consistently mention two things: that the price held steady from phone quote to final invoice, and that our technicians explained what they found in plain terms. One homeowner near Cherry Hill Road told us she’d had three quotes before ours, and ours was the only one that mentioned her basement return was pulling air through a cracked coal-era plenum. That’s the kind of local knowledge that comes from working these specific houses.
Response time matters in July, when Baltimore’s humidity turns dirty ducts into mold incubators. We typically schedule Baltimore Highlands appointments within 48 – 72 hours, and our live-answer phones mean you’re not leaving voicemail during a weekend emergency. Our technicians know the tight attic chases above these 1.5-story capes and the buried duct runs in full basements near the old Bethlehem Steel corridor. They’ve cleaned systems where the first pass pulled enough black, acidic coal grit to clog a standard HEPA vacuum, and they bring the right equipment for it.
Air Duct Cleaning Services in Baltimore Highlands
Air Duct Cleaning Services in Baltimore Highlands address a specific set of problems that don’t show up in newer construction. The job involves connecting a negative-air machine to your trunk line, then agitating debris inside each supply and return duct with a rotary brush system so the vacuum pulls it out of the house entirely. For a typical Baltimore Highlands rowhouse or cape, this runs $350 – $550. You’ll know you need it when you smell mildew when the blower starts, when one room stays stubbornly hot or cold, or when your filter clogs faster than the package says it should.
Residential System Cleaning
Most Baltimore Highlands homes fall into this category. We clean the full supply and return network, including the main trunk lines in your basement and the branch ducts to each room. Because many of these houses have short but tortuous duct runs, we use flexible rotary brushes from Rotobrush that can navigate tight elbows without damaging thin galvanized steel. The process takes 3 – 4 hours for a typical 3-bedroom home.

Video Inspection Before and After
We run a camera through your ducts before we start, and we show you the footage. After cleaning, we run it again so you can see the difference. In Baltimore Highlands, this matters more than usual, because homeowners here often don’t realize how much coal-era debris and rust scale has built up until they see it themselves. The inspection is included with every full-system cleaning.

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 Baltimore Highlands
HVAC Duct Cleaning in Baltimore Highlands goes beyond surface dust removal to address the root causes of poor airflow and indoor air quality in this specific housing stock. The job includes cleaning the evaporator coil and blower assembly when accessible, treating mold-prone areas with EPA-registered products, and inspecting for duct leaks that waste energy. For Baltimore Highlands homes, where summer humidity regularly pushes 80% and winter condensation rusts thin metal from the inside, this comprehensive approach typically costs $450 – $650. You’ll need it if your energy bills spike without explanation, if rooms near the end of the duct run never get comfortable, or if you smell a wet-dog odor when the heat pump cycles on.
Coil and Blower Cleaning
Your evaporator coil sits above the furnace and gets filthy in humid summers. When it’s coated in dust, it can’t absorb heat properly, so your system runs longer and still leaves you clammy. We clean the coil and the blower wheel with foaming cleaner and soft brushes, then check the condensate drain for clogs. In Baltimore Highlands, where basements flood occasionally and drains back up, this step prevents water damage and mold growth.
Duct Sealing and Rebalancing
Here’s where we differ from the blow-and-go outfits. Baltimore Highlands’s original ductwork is undersized by modern standards and leaks at every joint. We offer Duct Sealing in Baltimore Highlands using mastic sealant and metal tape, not duct tape, to close gaps permanently. Then we rebalance airflow so the room at the end of the line gets its share. Many homeowners find they don’t need a bigger system, just a system that actually delivers what it produces.
Trusted Brands We Service in Baltimore Highlands
Our equipment roster includes professional-grade tools most residential crews don’t carry. We run Rotobrush rotary brush systems for mechanical agitation in tight duct runs, Nikro negative-air machines for high-volume debris removal, and filtration products from Honeywell, Aprilaire, and Guardsman for homeowners who want to upgrade after cleaning. We stock common replacement parts and filtration media for Baltimore Highlands customers, so if your system needs a new media filter or a UV light upgrade, we can often install it the same visit rather than ordering and rescheduling.
Common Air Duct Cleaning Problems We See in Baltimore Highlands Homes
- Coal-era soot accumulation in basement returns. The first cleaning on a Baltimore Highlands rowhouse often pulls out black, acidic grit from pre-1950s coal heating that standard vacuums weren’t designed to handle. Our Nikro machines are built for this.
- Asbestos tape on original galvanized ducts. Many basements near Annapolis Road still have white or gray tape that contains asbestos. We don’t disturb it, we work around it, and we’ll flag it for you with documentation if you’re considering remediation.
- Summer mold in uninsulated duct runs. Baltimore’s swampy July and August air condenses on cold metal ducts in crawl spaces and basements. By September, we’re cleaning systems that smell like a damp basement because mold has colonized the interior.
- Rust-through from winter condensation. Cold, damp Baltimore winters let moisture sit in low spots of galvanized steel ducts. We find pinhole rust and separated seams on nearly every system over 40 years old in Baltimore Highlands, and we show you before we quote replacement.
Pricing for Air Duct Cleaning in Baltimore Highlands, MD
Here’s what honest pricing looks like for this market. A typical residential air duct cleaning in Baltimore Highlands runs $350 – $550 for a full system, depending on the number of registers and whether your basement ductwork is accessible or buried behind finished walls. HVAC duct cleaning with coil and blower service adds $100 – $150, bringing the range to $450 – $650. Commercial systems in small retail or office spaces near the Baltimore Highlands commercial strip start around $800 and scale with square footage and duct complexity.
What moves you within these ranges? Finished basements that require access panels. Excessive debris that needs extra agitation time. Asbestos tape that limits our work area and requires modified technique. What doesn’t move the price: we don’t charge per vent, we don’t add “disposal fees” at the door, and we don’t sell you a $99 coupon that becomes $600 once the van is in your driveway. The price we write down before work starts is the price you pay. Call (361) 326-5060 for a free written estimate on your specific system.
We Also Serve Cities Near Baltimore Highlands
Our crews work throughout the Baltimore metro area, and we regularly schedule Air Duct Cleaning in Baltimore Highlands alongside appointments in Dryer Vent Cleaning in Baltimore Highlands and neighboring communities. We also serve Baltimore, Columbia, Ellicott City, and Glen Burnie with the same written pricing and 365-Day Done Right Promise. If you’re near the county line or manage properties in multiple areas, we can often coordinate same-day service across locations.
Serving Baltimore Highlands, MD - Our Local Coverage Area
We’re based in the Baltimore Highlands 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 Baltimore Highlands
We typically schedule Baltimore Highlands appointments within 48 – 72 hours, and our live-answer phones take calls 24 hours a day. If you’re dealing with visible mold or a system that barely moves air, we’ll prioritize you. Call (361) 326-5060 and we’ll find the next available slot.
Yes. We work from the rowhouse blocks along Annapolis Road to the cape-style homes near Cherry Hill Road and Patapsco Avenue, including the full basement systems common in this area. Our technicians know the specific duct configurations in each housing type here.
We don’t use the word “emergency” for scheduled maintenance, but we do answer our phones live 24/7 and will expedite appointments for health-impacting situations like visible mold or severe airflow failure. If your system is unsafe to run, we’ll guide you through shutting it down and get a technician out as soon as possible.
Not significantly. Our pricing is consistent across the Baltimore metro, though Baltimore Highlands’s older, smaller duct systems sometimes take less time than the sprawling ductwork in newer Columbia homes. You might pay slightly less here for a basic cleaning, or slightly more if we encounter asbestos tape or buried coal-era debris that requires extra care.
Every job is covered by our 365-Day Done Right Promise in writing. If the work fails within a year, we return and make it right at no charge, including a free second visit. This covers workmanship and materials we installed. It does not cover new damage from floods, pest infestations, or changes you make to the system after we leave. We leave a copy of the guarantee with every invoice.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Baltimore Highlands and the greater Baltimore area since 2004.




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