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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AfterFast, Reliable Air Duct Cleaning Across Randallstown
Air duct cleaning in Randallstown typically runs $350 – $650 for a full residential system, with most jobs scheduled within a few business days and completed in a single visit. Our crews dispatch from the Baltimore office and cover Randallstown regularly, including the west-side split-levels off Old Court Road and the ranch neighborhoods near Liberty Road. We know the area’s housing stock because we’ve cleaned the original galvanized steel ducts that were installed during the post-WWII building boom. If you’re noticing musty smells when the heat kicks on, or dust settling faster than it should, call us at (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Randallstown’s Preferred Air Duct Cleaning Company
We’ve been serving Randallstown since 2004 as part of the Garrison Partners family, and our reputation here is built on showing up inside the quoted window, pricing the job in writing before we touch anything, and leaving the site clean. Our technicians are background-checked and uniformed, and they’re trained on the specific failure modes of mid-century galvanized ductwork that dominates this market. Calls are answered by a live person 24 hours a day, 7 days a week, no voicemail loops or callback queues. The 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. That’s The Garrison Standard, and it’s how we operate in Randallstown.
Air Duct Cleaning Services in Randallstown
Air Duct Cleaning Services in Randallstown address the unique conditions of post-WWII housing with original unlined galvanized steel ductwork that has now passed the 60-year mark. Most calls here involve decades of accumulated rust, scale, and microbial growth unique to that mid-century duct era, compounded by humid summers where dew points regularly exceed 65°F and condense on cold metal surfaces. A typical residential cleaning in Randallstown runs $350 – $650 depending on system size and contamination level, with commercial systems starting around $800. We use Rotobrush rotary brush systems for mechanical agitation and Nikro negative-air machines to maintain controlled suction during source removal.
Residential Duct Cleaning
Our residential crews focus on the full supply and return network, not just the visible registers. In Randallstown’s 1960s split-levels, that means inspecting past the furnace plenum where rusted sheet-metal screws often create hidden debris dams. We run video inspection before and after so you see what was removed.
Commercial Duct Cleaning
Commercial systems in Randallstown’s retail and office spaces require larger Nikro negative-air rigs and coordinated shutdown planning. We price these jobs by the system, not by the vent, with written quotes delivered before any equipment is moved on-site.
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 Randallstown
HVAC Duct Cleaning in Randallstown targets the entire forced-air system including the air handler, coils, and plenum connections that standard surface cleaning misses. Given the local housing stock of 1950s – 1970s ranch and split-level homes, we regularly find that the worst contamination sits in original return trunks where Baltimore’s humid summers have fed mold and mildew growth on uninsulated metal for decades. A typical HVAC duct cleaning in Randallstown runs $450 – $750 for a full system with coil and plenum service. We equip our crews with HEPA filtration from Abatement Technologies to capture disturbed spores during the job, not redeposit them.
Supply and Return System Cleaning
Supply ducts push conditioned air to your rooms; return ducts pull it back to the air handler. In Randallstown’s aging galvanized systems, both sides need attention, but the return side often hides the heavier buildup where negative pressure has drawn debris for 60-plus years.
Video Inspection and Documentation
We feed cameras through the full duct run and show you the footage. After cleaning, we run the cameras again. In Randallstown, this matters especially for west-side split-levels where rusted screws and scale aren’t visible from the registers.
Trusted Brands We Service in Randallstown
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation inside galvanized steel runs, Nikro negative-air machines for controlled debris extraction, and HEPA filtration from Abatement Technologies to contain what we remove. For homeowners looking to upgrade filtration after cleaning, we stock Aprilaire media air cleaners and Guardsman UV systems with fast turnaround for Randallstown customers. These aren’t hardware-store tools. They’re the same systems commercial crews use, maintained to manufacturer spec, and operated by technicians who can explain what each piece does for your specific duct type.
Common Air Duct Cleaning Problems We See in Randallstown Homes
- Rusted return-trunk debris dams in 1960s split-levels. On the west side of Randallstown, sheet-metal screws in original return trunks have corroded through, creating hidden blockages just past the furnace plenum that standard register cleaning never touches.
- Surface rust and scale in unlined galvanized supply runs. Baltimore’s humid subtropical climate means summer condensation on cold metal ducts, feeding microbial growth that flakes off and circulates through the home.
- Wood-heat soot loading in rural properties. Homes on unpaved roads and open land around Randallstown pull in dust and pollen while woodstoves deposit fine particulate that settles in return ducts and re-enters living spaces.
- Outbuilding systems treated as afterthoughts. Detached garages and workshops with ducted heat or cooling often get skipped entirely, so rural dust and combustion byproducts return within a season instead of following a realistic cleaning interval.
Pricing for Air Duct Cleaning in Randallstown, MD
Most full residential cleanings in Randallstown fall between $350 and $650. Here’s how typical jobs break down:
| Service | Typical Range |
|---|---|
| Standard residential system (supply + return) | $350 – $500 |
| Large home or heavy contamination | $500 – $650 |
| HVAC full system with coil and plenum | $450 – $750 |
| Commercial system | $800 – $1,500+ |
| Video inspection add-on | $75 – $125 |
| Detached garage or outbuilding system | $200 – $400 |
What moves the price: system size, accessibility of the air handler, level of contamination, and whether we find rusted trunk sections that need re-securing. We give one flat price per system, agreed in writing before work starts. No per-vent pricing, no add-ons at the door. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Randallstown
Our crews cover the full Baltimore metro, including Air Duct Cleaning in Randallstown and surrounding areas. We regularly service Pikesville, Owings Mills, Reisterstown, and Catonsville with the same written pricing and 365-Day Done Right Promise. Scheduling is coordinated from our Baltimore office, with local technicians dispatched to each job.
Serving Randallstown, MD - Our Local Coverage Area
We’re based in the Randallstown 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 Randallstown
Every 3 – 5 years for most Randallstown homes with original galvanized steel, though properties on unpaved roads or with wood heat may need service every 2 – 3 years due to higher dust and particulate loading. The unlined metal surface traps debris at joints and develops scale that standard filters won’t catch. Call (361) 326-5060 for an exact quote – estimates are free.
Rusted-through sheet-metal screws in 1960s split-level return trunks create hidden debris dams that hold moisture from Baltimore’s humid summers, feeding mildew growth you can’t reach with household cleaners. Our Air Duct Cleaning crews inspect past the plenum with cameras, remove the dam with negative-pressure extraction, and re-secure the trunk. Call (361) 326-5060 for an exact quote – estimates are free.
Yes, significantly. Woodstove particulate and rural dust loading settle in return ducts and recirculate through the supply side, which is why surface cleaning never solves it. We pulled a Nikro negative-pressure rig and a Rotobrush agitation tool into a 1968 split-level off Old Court Road, where the homeowner had been running wood heat and the return trunk’s rusted screws had let debris pile into a soft dam right past the plenum. Camera inspection showed scale and mildew along the unlined galvanized runs, so we did source removal with HEPA filtration and re-secured the trunk. The blower motor amp draw dropped and the supply registers stopped puffing the sour, smoky smell the family had blamed on the woodstove. Call (361) 326-5060 for an exact quote – estimates are free.
Yes, we clean ducted systems in detached garages, workshops, and outbuildings as standalone jobs or add-ons to the main house. These systems often collect the heaviest rural dust and combustion loading because they’re served by smaller filters and irregular maintenance. Call (361) 326-5060 for an exact quote – estimates are free.
No. A proper Randallstown job covers the full supply and return network, the air handler, and the plenum connections, with camera inspection to verify. Limiting the job to reachable registers and the furnace filter on unlined galvanized trunks leaves the rusted return-plenum debris dam untouched, which is why some homeowners call us after another outfit “cleaned” and nothing changed. We show you before-and-after photos of your own ducts. Call (361) 326-5060 for an exact quote – estimates are free.
Ready to schedule? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate. We’ll show up inside the quoted window, price the job before we start, and back it with the 365-Day Done Right Promise in writing.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Randallstown since 2004.