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 Catonsville
Air duct cleaning in Catonsville, MD typically runs $350 – $650 for a full residential system and is scheduled within a few days of your call. We’re familiar with the ductwork hiding in Catonsville’s pre-1950 homes around Frederick Road and Paradise, where original galvanized trunk lines run through damp crawl spaces that newer equipment can’t always reach.
Hollis Air Duct Cleaning has served Catonsville homeowners since 2004 as part of the Garrison Partners family. Our dispatch and scheduling run through our Baltimore office, but our crews live and work in this area. We know the difference between a standard seasonal cleaning and the post-flood work that Catonsville’s tree-heavy core often needs after wet springs like the record 2018 rains. When you call (361) 326-5060, a live person answers, 24 hours a day.
Why Hollis Air Duct Cleaning Is Catonsville’s Preferred Air Duct Cleaning Company
We’ve built our reputation in Catonsville on showing up inside the window we quoted, pricing the job in writing before we touch anything, and leaving the site clean. That’s The Garrison Standard, and it applies to every job we run in Catonsville, Elkridge, and the surrounding Baltimore County communities.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. Every job carries 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.
We don’t compete on teaser prices. We compete on discipline. The price we write down before work starts is the price you pay. No per-vent add-ons, no equipment charges that appear at the door.
Air Duct Repair in Catonsville
Air Duct Repair in Catonsville addresses the corroded, separated, or flood-damaged runs that cleaning alone won’t fix. In the pre-1950 core around Frederick Road and Paradise, we regularly find original galvanized trunk lines that have rusted through at the seams after years of damp crawl space exposure. A typical repair in Catonsville runs $200 – $450 per section, depending on accessibility and whether the run is rigid metal or flex duct.
Our Air Duct Cleaning team uses video inspection to show you the damage before we cut anything. You’ll see the corrosion, the separation, or the standing water that justifies repair over cleaning.
When Repair Beats Replacement
Isolated corrosion on a single trunk run, a separated flex duct in a basement ceiling, or a damaged boot in a crawl space – these are fixable. We seal with mastic, replace the damaged section with matching material, and test static pressure to confirm the system isn’t leaking air into your walls.
When Replacement Is the Only Honest Call
If the galvanized trunk line has pinhole corrosion across multiple feet, or if mold has penetrated the metal pores, cleaning won’t restore it. We’ll document the moisture readings and video evidence so your insurer understands why repair isn’t viable. Then we quote replacement in writing before any demolition starts.
Ductwork Cleaning in Catonsville
Ductwork Cleaning in Catonsville means source removal, not just blowing dust around. Our crews use Rotobrush rotary brush systems and Nikro negative-air machines with HEPA filtration to agitate and extract debris from your supply and return ducts. A full residential system in Catonsville typically costs $350 – $650, with larger homes or systems with multiple zones running toward the higher end.
The humid mid-Atlantic climate here means Catonsville ducts see heavy condensation in summer cooling and winter heating alike. That moisture feeds mold and dust mites inside the system. Standard vacuuming doesn’t touch it.
Source Removal for Musty Systems
After wet springs flood basements in Paradise and Catonsville Manor, the musty smell from vents often persists for months. We use mechanical agitation to dislodge mold colonies and organic buildup from the duct walls, then extract it under negative pressure so nothing recirculates through your home.
Post-Flood Documentation Protocol
We photograph moisture readings, record video of the duct interior, and note material condition on every post-flood job. This documentation goes to your insurer if a run needs replacement. Adjusters accept our reports because we show them what we saw, when we saw it, and what the numbers mean.
Trusted Brands We Service in Catonsville
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation, Nikro negative-air machines for controlled debris extraction, and filtration products from Honeywell and Aprilaire for homeowners who want to upgrade after cleaning. We don’t show up with shop vacs and compressed air. The tools we use are the same ones commercial crews run in hospitals and schools, sized for residential systems in Catonsville’s older homes and newer ranches alike.
Common Air Duct Cleaning Problems We See in Catonsville Homes
- Musty vents after basement flooding. In Paradise and Catonsville Manor, record rainfall soaks crawl spaces and the original floor ducts absorb moisture for weeks. The smell hits the vents before homeowners see water on the basement floor.
- Mold in galvanized trunk lines. Pre-1950 homes around Frederick Road have sheet-metal ducts that corrode slowly from the inside. Once mold penetrates the metal pores, surface cleaning won’t reach it. We check with borescopes before we quote.
- Recontamination from neglected air handlers. Blow-and-go crews clean the ducts but skip the blower motor and evaporator coil. If those components are wet or moldy, the whole system smells again within a month.
- Long flex runs with no access points. The 1950s-70s ranches and split-levels surrounding Catonsville’s core often have flex duct added during past HVAC replacements, with no service doors. We cut strategic access panels, clean, and seal them properly afterward.
Pricing for Air Duct Cleaning in Catonsville, MD
Most Catonsville homeowners pay between $350 and $650 for a complete residential duct cleaning. Here’s how that breaks down:
- Small home or condo (up to 1,200 sq ft): $350 – $450
- Mid-size home with basement system (1,200 – 2,500 sq ft): $450 – $550
- Larger home or multi-zone system (2,500+ sq ft): $550 – $650
- Post-flood cleaning with HEPA containment and documentation: $600 – $850
- Air duct repair per section: $200 – $450
What moves you up or down: accessibility of the ductwork, whether we need to cut access panels, the severity of contamination, and whether we’re documenting for insurance. We give one flat price per system, agreed in writing before work starts. No per-vent pricing. No equipment surcharges at the door. Call (361) 326-5060 for a free estimate – we’ll ask about your home’s age, square footage, and any recent water issues so the quote is accurate when we arrive.
We Also Serve Cities Near Catonsville
Our crews run regular routes to Catonsville, Elkridge, Baltimore, Pikesville, and Randallstown. Scheduling is coordinated from our Baltimore office, and we book appointments across these communities throughout the week.
Serving Catonsville, MD - Our Local Coverage Area
We’re based in the Catonsville 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 Catonsville
Sometimes they can be cleaned, sometimes they must be replaced, and the difference comes down to moisture duration and material condition. If the galvanized trunk line sat in standing water for days, or if mold has penetrated the metal pores, cleaning won’t restore it. We run a camera inspection and take moisture readings before we quote either option. Call (361) 326-5060 and we’ll schedule a look – estimates are free.
The pre-1950 core around Frederick Road and Paradise has original galvanized sheet-metal ducts running through unsealed, damp crawl spaces. Newer homes use insulated flex duct with better vapor barriers. When Catonsville’s humid summers and wet springs hit, those older metal trunks condense moisture and hold it. Call (361) 326-5060 for an inspection if you’re in one of these homes and smelling must from the vents.
Proper source removal with mechanical agitation and negative-air extraction fixes it. Blow-and-go cleaning that knocks dust loose without extraction just hides it temporarily. We use Rotobrush systems and Nikro HEPA machines to remove mold colonies at the source, not redistribute them. Call (361) 326-5060 to discuss what your system needs.
We record video of the duct interior, photograph moisture meter readings at multiple points, and note material condition on a written report with timestamps. Adjusters need evidence that a run is corroded or mold-compromised beyond cleaning – we provide that evidence in a format they’ve accepted on past Catonsville claims. Call (361) 326-5060 if you’re filing a claim and need documentation.
We clean ducts in homes with existing Rotobrush, Honeywell, and Aprilaire equipment, and we can service or upgrade those filtration systems during the same visit. If your home already has one of these brands installed, we’ll note it when you call and bring compatible components. Call (361) 326-5060 to schedule.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Catonsville since 2004.