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 Dundalk
Air duct cleaning in Dundalk typically runs $350 – $650 for a full residential system, with most jobs scheduled within a few days and completed in three to five hours. We dispatch crews from our Baltimore office and serve Dundalk homeowners regularly, from the post-war row houses near the old Bethlehem Steel site to newer infill builds along Willow Spring Road. If your registers are blowing dust, your HVAC is short-cycling, or you’re catching that musty, humid smell that hangs in Dundalk’s older homes, call us at (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Dundalk’s Preferred Air Duct Cleaning Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Air Duct Cleaning team knows the specific contamination patterns that show up in Dundalk’s housing stock. The 1940s and 1950s brick row houses and small frame homes built for steelworkers weren’t designed for today’s HVAC loads, and the decades of industrial soot near the old mill sites created residue you won’t find in newer suburbs.
Our technicians are background-checked and uniformed, and they arrive inside the quoted window. The price is written down before any work starts, and it doesn’t move at the door. Every job carries our 365-Day Done Right Promise: if the work fails within a year, we return and make it right at no charge, including a free second visit. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues.
We coordinate scheduling from our Baltimore office, but our crews serve Dundalk directly. That local familiarity matters. We know that shared walls in St. Helena and Turner Station sometimes require coordinating with neighbors to avoid cross-contamination during duct cleaning, and we know the black, oily grit that accumulates in ducts near the old steel mill sites requires different agitation techniques than standard household dust.
Vent Cleaning in Dundalk
Vent Cleaning in Dundalk addresses the supply and return registers where conditioned air enters your rooms and gets drawn back to the air handler. In Dundalk’s older row houses, these vents often sit in the same spots for seventy-plus years, collecting the industrial particulate and humidity-driven mold that this area’s climate and history produce. A typical vent cleaning as part of a full system job in Dundalk runs $75 – $150 per zone when bundled, or $150 – $300 as a standalone service focused on accessible registers only.
Supply Vent Cleaning
Supply vents push heated or cooled air into your living space. In Dundalk’s newer infill homes, we regularly find construction dust and drywall debris packed behind these registers from the builder’s rough cleanup. Our techs remove each cover, brush and vacuum the boot and first few feet of duct, and check for blockages that strain your blower motor.
Return Vent Cleaning
Return vents pull air back through the system. In Dundalk’s older homes with undersized returns, these get clogged faster because the same air volume squeezes through a smaller opening. We clean the grille, the frame, and the visible ductwork behind it, then note whether the return duct itself needs full system cleaning to solve the root problem.
Air Duct Repair in Dundalk
Air Duct Repair in Dundalk fixes the leaky, damaged, or poorly connected ductwork that wastes energy and circulates contaminants. Dundalk’s original galvanized or early flexible ductwork, installed in the 1940s through 1960s, has often separated at joints, corroded at seams, or collapsed in sections. A typical repair in Dundalk runs $200 – $500 for sealing and patching accessible trunk lines, or $800 – $1,800 for replacing collapsed or severely deteriorated sections with new insulated flex or hard pipe.
Duct Sealing and Mastic Application
Leaky joints in Dundalk’s older systems pull attic dust, basement moisture, and wall cavity air into the airflow. We apply Duct Sealing in Dundalk using mastic, a thick, fiber-reinforced compound that bridges gaps and hardens to a permanent seal. Unlike tape, which dries and falls off, mastic lasts the life of the duct when applied correctly to clean, dry surfaces.
Section Replacement
When ductwork is too corroded or crushed to seal, we cut out the damaged section and splice in new material. In Dundalk’s tight row-house mechanical closets, this requires working in confined spaces with proper ventilation. We match the diameter and insulation rating of the original, then seal every joint before closing up.
Trusted Brands We Service in Dundalk
We clean and repair ductwork connected to all major HVAC brands, and we stock filtration products from Honeywell, Aprilaire, and Guardsman for Dundalk customers who want upgraded protection after their system is clean. Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation and Nikro negative-air machines for controlled debris extraction. We don’t show up with a shop vac and a brush. The tools we use are the same ones commercial crews deploy in hospitals and schools, and we explain what each one does while we’re working in your home.
Common Air Duct Cleaning Problems We See in Dundalk Homes
- Construction debris in new infill builds. Dundalk’s newest homes, squeezed onto tight lots between older row houses in St. Helena and Turner Station, routinely have drywall dust and framing debris left in the ductwork after the builder’s final walkthrough. That white dust puffing from your registers eight months after move-in? It’s not normal, and it’s not going away on its own.
- Black, oily grit near former Bethlehem Steel sites. Ducts in neighborhoods downwind of the old mill accumulate a distinct residue: fine, carbon-heavy particulate that bonds to duct walls and resists standard vacuuming. Our rotary brush systems break this material loose before negative-air extraction removes it from your home entirely.
- Mold and dust mite proliferation from harbor humidity. Dundalk’s humid subtropical climate pulls Baltimore Harbor-area moisture into HVAC systems that run hard year-round. Cool, damp duct interiors become ideal environments for biological growth, especially in older homes with leaky returns that draw basement air.
- Undersized returns and short-cycling equipment. The tight, original ductwork in Dundalk’s 1940s and 1950s homes wasn’t sized for modern heating and cooling loads. Restricted airflow makes the system work harder, heats the blower motor, and recirculates concentrated dust through the living space.
Pricing for Air Duct Cleaning in Dundalk, MD
Most full residential air duct cleaning jobs in Dundalk fall between $350 and $650 for a complete system: supply ducts, return ducts, trunk lines, and the air handler cabinet. Commercial systems or larger homes with multiple zones run $800 – $1,500. Air duct repair, when needed, adds $200 – $500 for sealing and patching or $800 – $1,800 for section replacement. Dryer vent cleaning, which we often bundle with duct cleaning in Dundalk’s older homes with long vent runs, runs $120 – $250.
What moves the price: the number of supply and return vents, whether the system includes a main trunk and multiple branches, accessibility of the air handler, and whether we find construction debris or heavy contamination requiring extended agitation time. We give you one flat price per system, agreed in writing before we start. No per-vent pricing, no add-ons at the door. Call (361) 326-5060 for an exact quote. Estimates are free.
We Also Serve Cities Near Dundalk
Our crews work throughout the Baltimore metro area, including Air Duct Cleaning in Dundalk and the surrounding communities of Essex, Rosedale, Middle River, and Baltimore itself. Scheduling is coordinated from our Baltimore office, with local technicians dispatched to each job.
Serving Dundalk, MD - Our Local Coverage Area
We’re based in the Dundalk 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 Dundalk
Because builders rarely vacuum ductwork after drywall installation and final construction cleanup. In Dundalk’s newer infill homes, we’ve found construction dust caked along trunk lines and coating blower motors within months of move-in. That debris keeps recirculating until it’s physically removed. Call (361) 326-5060 for a camera inspection if you’re seeing white dust from your registers.
Yes, we follow NADCA ACR standards on every job, including the older row houses in Dundalk where shared walls and close setbacks require additional containment measures. That means negative pressure during cleaning, HEPA filtration on our equipment, and protective coverings for your floors and furnishings. The standard exists to prevent cross-contamination, which matters especially in tight Dundalk neighborhoods.
It means standard vacuuming won’t remove it. That residue is carbon-heavy industrial particulate that bonds to metal duct walls. We use rotary brush agitation to break it loose, then extract it under negative pressure with HEPA filtration so it doesn’t resettle in your home. If you live near the former mill site and smell a persistent metallic or oily odor from your vents, that’s the likely source.
Cleaning removes existing mold growth and the organic debris that feeds it, but it doesn’t solve the moisture problem. In Dundalk’s humid climate, we often recommend pairing duct cleaning with improved filtration and addressing any return air leaks that pull damp basement or crawl space air into the system. For active mold, we can assess whether source removal is sufficient or whether remediation of the surrounding environment is needed first.
Yes, dryer vent cleaning is a standard service we offer in Dundalk, and it matters because lint accumulation is a leading cause of house fires. In Dundalk’s older homes, dryer vents often run long distances through walls or terminate in awkward spots that are hard to access and clean regularly. We use rotary tools and high-velocity air to clear the full run, then verify airflow at the exterior termination. Bundling this with air duct cleaning saves on dispatch and setup time. Call (361) 326-5060 to add it to your appointment.
Ready to get your ducts cleaned right? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate. We’ll show up when we said, price it before we touch it, and stand behind the work for a full year under our 365-Day Done Right Promise.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Dundalk and the Baltimore metro area.