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.
Before
After
Before
After
Before
AfterAir Duct Cleaning Company in Catonsville, MD
Most air duct cleaning in Catonsville runs $450 to $850 for a whole-home system, with jobs typically scheduled within a few days and completed in one visit. We’re Hollis Air Duct Cleaning, and we handle the specific problems this town’s older housing stock and wet crawl spaces create: musty trunk lines, mold-prone floor ducts, and flex runs that sag in damp basements. Our crews dispatch from the Baltimore office and work Catonsville homes regularly. Call (361) 326-5060 for a free estimate.
Why Catonsville Homes Are Different
Catonsville’s core neighborhoods, Frederick Road, Paradise, and Catonsville Manor, sit on tree-heavy lots with pre-1950s construction and original galvanized sheet-metal ductwork. After record rainfall years like 2018, basement flooding doesn’t always show as standing water. The first sign is often a musty smell from the vents for months afterward, because original floor and trunk ducts run through damp, sometimes unsealed crawl spaces. Standard blow-and-go cleaning won’t fix that; the system needs negative-air extraction with targeted trunk-line attention.
The 1950s-70s ranches and split-levels surrounding the core present a different problem. Smaller marginal trunk lines and long flex runs, added during past HVAC replacements, sag and collect debris where they dip in basement ceiling cavities. Catonsville’s humid mid-Atlantic climate doesn’t help. Hot, muggy summers create heavy condensation in cooling ducts; cold, damp winters do the same when heating kicks on. That cycle feeds mold and dust-mite growth year-round. We see it in Paradise ranch homes every July, and in Catonsville Manor colonials every January.
Our Main Catonsville Services
Catonsville homeowners call us for three jobs, each with its own page below.
Air Duct Cleaning in Catonsville
We clean the full supply and return system with a Rotobrush rotary brush system for agitation and a Nikro negative-air machine for containment. In Catonsville’s older homes, we pay special attention to trunk lines in damp crawl spaces where mold colonies take hold after wet springs. Every job gets a written price before we start and is covered by our 365-Day Done Right Promise. Air Duct Cleaning in Catonsville
Dryer Vent Cleaning in Catonsville
Lint buildup in dryer vents is a fire hazard, and Catonsville’s mature tree cover means more exterior vent hoods get clogged with debris. We run a rotary brush through the full vent line to the exterior hood, then verify airflow with a meter. Background-checked, uniformed technicians handle every job. Dryer Vent Cleaning in Catonsville
Duct Sealing in Catonsville
Leaky ducts in Catonsville’s unconditioned basements and crawl spaces waste heated and cooled air into spaces you don’t live in. We seal joints and seams with mastic and metal-backed tape, then pressure-test the system to verify results. This is especially effective on the long flex runs common in post-war ranches. Duct Sealing in Catonsville
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Catonsville
We stock parts and filters from Honeywell, Aprilaire, and Guardsman, and our equipment roster includes Rotobrush rotary systems and Nikro negative-air machines. Most filter replacements and standard repairs ship same-day or next-day through our Baltimore office. See our brands for the full list.
Pricing for Air Duct Cleaning Company in Catonsville, MD
| Service | Typical range in Catonsville |
|---|---|
| Whole-home air duct cleaning (single system) | $450 – $850 |
| Whole-home air duct cleaning (two systems) | $750 – $1,400 |
| Dryer vent cleaning | $120 – $250 |
| Duct sealing (single system, mastic + tape) | $600 – $1,200 |
| Trunk line mold remediation add-on | $200 – $450 |
| Crawl space duct inspection with photo report | $85 – $150 |
| Return plenum cleaning | $150 – $300 |
| Sanitizer/deodorizer application | $75 – $150 |
Prices in Catonsville push toward the higher end when crawl space access is tight, when original galvanized ducts require extra agitation time, or when mold remediation is needed after wet seasons. We write the price down before any work starts, and it does not move at the door.
Neighborhoods We Serve in Catonsville
We work across Catonsville regularly, from the historic core to the post-war rings. Most appointments schedule within two to four days, with dispatch coordinated from our Baltimore office.
- Paradise
- Catonsville Manor
- Frederick Road corridor
- Westchester
- Oella
Service Area – Cities Near Catonsville
Our crews cover Catonsville and the surrounding Baltimore County area, including Elkridge, MD, Baltimore, OH, Pikesville, MD, and Randallstown, MD. Scheduling and dispatch run from our Baltimore office, with local technicians assigned to each market.
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 Company in Catonsville
No permit is required for standard residential duct cleaning or dryer vent cleaning in Catonsville. Duct sealing that involves modifying duct routing may need Baltimore County approval; we check this during our estimate and handle any paperwork if required. Call (361) 326-5060 to discuss your specific job.
Most Catonsville appointments schedule within two to four business days, with dispatch from our Baltimore office. We do not offer same-day service; duct cleaning is a scheduled job that requires proper equipment loading and time allocation. Call (361) 326-5060 to check current availability.
Yes. We carry general liability and workers’ compensation insurance, and our technicians arrive in marked vehicles with background-check documentation available on request. We coordinate entry with HOA management when needed and leave the site clean. Call (361) 326-5060 to arrange access details.
Ready to get your Catonsville home’s ducts cleaned right? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate with no pressure and no moving targets.
What happens when you call
- 1A real person answersNo phone trees - talk to a local air duct cleaning pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Catonsville Customers Say
"They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H."Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O."Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W.