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 Garrison
Air duct cleaning in Garrison, MD typically runs $320 – $580 for a full residential system and is scheduled by appointment with written pricing confirmed before any work begins. If you’re noticing weak airflow from second-floor vents, musty odors when the heat kicks on, or a thin film of grey dust resettling within days of cleaning, your ductwork is likely circulating debris rather than moving clean air. We serve Garrison from our Baltimore coordination office, and our crews know the difference between a Garrison Farms split-level with flexible insulated runs and an 1850s stone farmhouse along Garrison Forest Road where the ducts run through rubble-stone chases. That local knowledge changes how we price the job, what equipment we load, and how long we’re in your home. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Garrison’s Preferred Air Duct Cleaning Company
We’ve been part of the Garrison Partners family since 2004, and our reputation in Garrison is built on showing up inside the window we quoted and leaving with the site clean. Our Air Duct Cleaning team has handled everything from Riderwood colonials with squirrel-nest blockages to original gravity-drop systems in pre-Civil War stone homes where hand-brushing is the only safe approach.
Roy Castellanos leads our operation, and The Garrison Code governs how every technician behaves on a job: arrive squared away, price in writing before touching equipment, complete the work by the book, and leave no trace except cleaner air. Background-checked, uniformed crews mean you know who’s walking through your door. Phones are answered by a live person 24 hours a day, 7 days a week, no voicemail loops.
Our 365-Day Done Right Promise covers every job in writing. If the work fails within a year, we return and make it right at no charge, including a free second visit. No negotiation, no runaround.
Ductwork Cleaning in Garrison
Ductwork Cleaning in Garrison means different things depending on which generation of home we’re walking into. In the older stone and brick houses near the Jones Falls valley, we often find supply trunks threaded through original rubble-stone foundation walls with no basement return network at all. Return air travels through wall cavities and stud bays, so cleaning means clearing dust-laden channels accessible only through baseboard registers. In Garrison Farms and Riderwood, the 1960s-era flexible insulated runs dominate, and the seasonal culprit is usually squirrel nesting or compressed insulation choking airflow. A typical residential Ductwork Cleaning in Garrison runs $320 – $480 for newer homes with accessible ductwork, and $420 – $580 for older homes requiring hand-brush work through narrow chases.
Gravity-Drop and Historic Systems
Original floor-grate returns and interior chimney flues in pre-Civil War Garrison homes can’t handle rotary vacuum equipment. Our crews use Rotobrush hand systems and negative-air methods adapted for tight masonry chases, with HEPA filtration to contain historic coal ash and mortar debris.
Flexible Run Cleaning
Newer Garrison homes with insulated flex duct require different care. We use Nikro negative-air machines to extract compressed insulation fibers and nesting material without damaging the vapor barrier, then verify airflow recovery with before-and-after comparison.
Air Duct Inspection in Garrison
Air Duct Inspection in Garrison is the step that prevents surprises, and it’s especially critical here because the housing stock varies so dramatically across neighborhoods. We use video inspection to show you exactly what’s inside your ducts before quoting a dollar figure. A typical residential Air Duct Inspection in Garrison costs $85 – $150, applied toward your cleaning if you proceed. In stone homes along Garrison Forest Road, we’re looking for mortar crumb accumulation and coal ash residue in low spots. In Garrison Farms colonials, we’re checking flex runs for squirrel entry points and insulation compression. The inspection takes 30 – 45 minutes and includes a written report with photo documentation.
Video Documentation Standards
Every Hollis inspection records timestamped footage you keep. We flag active mold, standing debris, duct separation, and pest evidence. No guesswork, no pressure, just a clear view of what your system is moving through your home.
Post-Cleaning Verification
After cleaning, we re-run the camera through key trunk lines to confirm debris removal. In Garrison’s older homes with rubble-stone chases, this verification step is non-negotiable, hand-trowel work leaves no visual margin for error.
Trusted Brands We Service in Garrison
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation, Nikro negative-air machines for debris extraction, and filtration products from Honeywell, Aprilaire, and Guardsman. We stock common replacement components locally for Garrison customers, so if an inspection reveals a separated flex duct or failed register boot, we’re not ordering parts and rescheduling. The turnaround matters in Garrison’s climate, where summer humidity and winter heating cycles mean your system runs hard ten months of the year. We also handle Dryer Vent Cleaning in Garrison and Duct Sealing in Garrison using the same professional-grade tools and the same written pricing standard.
Common Air Duct Cleaning Problems We See in Garrison Homes
- Historic coal ash in gravity-drop systems. Technicians working stone houses near the Jones Falls regularly find grey dust that tests as 150-year-old coal soot, not ordinary household debris. You don’t vacuum this, you hand-trowel it out, and you need HEPA containment to prevent redistribution.
- Squirrel nesting in Garrison Farms attic flex runs. The mature oak canopy surrounding these 1960s neighborhoods provides highway access for squirrels, who compress insulation and leave acorn debris that restricts airflow by 30 percent or more.
- Mold colonization in unheated attic trunks. Garrison’s cold, wet winters create condensation on cold metal duct runs in unconditioned spaces. By March, we’re finding active mold that becomes airborne on the first heating cycle of fall.
- Pollen and leaf litter loading in return-side ducts. The valley’s dense tulip poplar and maple canopy dumps seasonal debris that overwhelms standard filters, coating blower wheels and return grilles with sticky, microbial film.
Pricing for Air Duct Cleaning in Garrison, MD
We publish our ranges because we’ve been on the other side of the bait-and-switch, and we won’t run that model. A typical full-system residential air duct cleaning in Garrison runs $320 – $580, with most jobs landing between $380 and $480. Older stone homes with hand-brush chases run toward the higher end. Newer homes with accessible flex duct and straight trunk lines run toward the lower end. Commercial systems start around $680 and scale with square footage and access complexity.
What moves the number: ductwork generation and accessibility, presence of active mold requiring antimicrobial treatment, number of HVAC zones, and whether we’re also handling Air Duct Cleaning in Garrison alongside dryer vent or duct sealing work. We do not price per vent. We price per system, in writing, before any work starts. The price on the paper is the price at completion. Call (361) 326-5060 for an exact quote, estimates are free.
We Also Serve Cities Near Garrison
Our crews work throughout the Baltimore metro, including Garrison, Baltimore, Columbia, Ellicott City, and Glen Burnie. Scheduling and dispatch are coordinated from our Baltimore office, with local crews serving each area. The same written pricing, the same 365-Day Done Right Promise, and the same background-checked, uniformed technicians apply across every market we cover.
Serving Garrison, MD - Our Local Coverage Area
We’re based in the Garrison 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 Garrison
We typically schedule Garrison appointments within 3 – 5 business days, with some flexibility for urgent situations like suspected mold or complete airflow blockage. Dispatch is coordinated from our Baltimore office, and our crews know the local road network including Garrison Forest Road and the Riderwood access points. Call (361) 326-5060 to check current availability, estimates are free.
Yes, we work across Garrison including the historic stone home district along the Jones Falls valley, Garrison Farms, Riderwood, and newer infill developments. Each area’s ductwork generation requires different equipment and technique, and we price accordingly after inspection.
Phones are answered by a live person 24 hours a day, 7 days a week, and we can often accommodate same-week scheduling for urgent situations like suspected carbon monoxide backdraft, complete system blockage, or visible mold dispersal. For true emergencies involving HVAC failure or safety concerns, call (361) 326-5060 and we’ll triage immediately.
Garrison’s pricing sits in line with Baltimore County overall, though older homes with historic ductwork may run 15 – 20 percent above standard due to hand-brush labor time. Columbia and Ellicott City tend toward similar ranges, while dense Baltimore rowhouses with compact vertical systems sometimes price lower. We quote your specific home after inspection, not by zip code.
Every air duct cleaning in Garrison is covered in writing for 365 days. If debris recirculates, odors return, or airflow fails to meet the post-cleaning benchmark we documented, Hollis returns and makes it right at no charge, including a free second visit. No deductible, no expiration negotiation, no hassle. Call (361) 326-5060 to schedule your free estimate.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Garrison since 2004 as part of the Garrison Partners family.




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