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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Before
AfterAir Duct Cleaning Company in Randallstown, MD
Air duct cleaning in Randallstown, MD typically costs $350 – $650 for a whole-home system and is scheduled by appointment with a written price confirmed before any work begins. We’re Hollis Air Duct Cleaning, and our crews handle the specific challenges of Randallstown’s mid-century housing stock: original galvanized steel ductwork from the 1950s – 1970s that has accumulated decades of rust, scale, and microbial growth unlike anything found in newer markets. If you’re ready to book, call us at (361) 326-5060 for a free estimate.
Why Randallstown Homes Are Different
Randallstown’s post-WWII housing boom created thousands of homes with original galvanized steel ductwork that has now passed the 60-year mark. Most air duct cleaning calls here involve decades of accumulated rust, scale, and microbial growth unique to that mid-century duct era. No neighboring city has this exact concentration of aging, unlined metal ducts still in active service.
The dominant housing stock is 1950s – 1970s ranch and split-level homes, many with original unlined galvanized steel ducts that trap debris at joints and develop surface rust where Baltimore’s humid summers condense on cold metal. Randallstown sits in the Mid-Atlantic humid subtropical zone, where summer dew points regularly exceed 65°F, causing condensation inside uninsulated metal ducts that feeds mold and mildew growth. This is a problem less severe in drier or colder nearby markets.
Local technicians know that the worst duct contamination in Randallstown is found in the original return trunks of 1960s split-levels on the city’s west side, where sheet metal screws have rusted through and created hidden debris dams just past the furnace plenum. These conditions mean our crews arrive with rotary brush systems and negative-air equipment sized for heavy buildup, not light maintenance.
Our Main Randallstown Services
Homeowners in Randallstown call us most often for these three services, each with its own dedicated page and pricing details:
Air Duct Cleaning in Randallstown
We clean the full supply and return network using a Rotobrush rotary brush system combined with negative-air extraction to pull loosened debris out of your home entirely. In Randallstown, this means addressing the rust scale and biological growth that collect in original galvanized trunks, especially where decades of condensation have degraded the metal surface. Every job starts with a written price and ends with before-and-after photos of your own ducts. Air Duct Cleaning in Randallstown
Dryer Vent Cleaning in Randallstown
Dryer vent cleaning removes lint accumulation from the appliance through the exterior termination, reducing fire risk and improving drying efficiency. Randallstown’s mature tree canopy means many vents terminate under covered soffits or near landscaping that traps moisture, accelerating lint compaction. We use rotary tools and high-velocity air to clear the full run, then verify airflow at the exit. Dryer Vent Cleaning in Randallstown
Duct Sealing in Randallstown
Duct sealing closes leaks in the supply and return network using mastic sealant and specialized tapes rated for HVAC use. In Randallstown’s aging systems, we find significant leakage at rusted joints and screw holes in original galvanized trunks, particularly in west-side split-levels where metal fatigue is most advanced. Sealing these leaks improves efficiency and reduces the infiltration of attic and crawlspace air. Duct Sealing in Randallstown
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 Randallstown
We stock parts and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman, and we service all major HVAC brands found in Randallstown homes. Most filter replacements and component upgrades ship to our Baltimore office within 24 hours, so turnaround is rarely the delay. See our brands for the full list.
Pricing for Air Duct Cleaning Company in Randallstown, MD
| Service | Typical range in Randallstown |
|---|---|
| Whole-home air duct cleaning (single system) | $350 – $650 |
| Whole-home air duct cleaning (two systems) | $550 – $950 |
| Dryer vent cleaning (standard run) | $120 – $200 |
| Dryer vent cleaning (long run or rooftop termination) | $180 – $280 |
| Duct sealing (single system, mastic method) | $400 – $800 |
| Duct sealing (two systems) | $650 – $1,200 |
| Sanitizer/deodorizer application | $75 – $150 |
| Filter upgrade (Aprilaire or Honeywell media) | $85 – $180 installed |
Prices in Randallstown trend toward the higher end of these ranges when original galvanized ducts require extra rust remediation or when multiple return trunks need separate access. The price we write down before work starts is the price you pay. No per-vent add-ons, no equipment surcharges, no surprises at the door.
Neighborhoods We Serve in Randallstown
We work across Randallstown’s full residential footprint, from the older ranch communities near Liberty Road to the split-level concentrations on the west side. Most appointments are scheduled within a 3-day window, with dispatch coordinated from our Baltimore office.
- West Randallstown (1960s split-levels)
- Liberty Road corridor (1950s – 1960s ranches)
- Church Lane area
- Winands Road vicinity
- Off Groffs Mill Drive
Service Area – Cities Near Randallstown
Our crews cover Randallstown and the surrounding Baltimore County communities where similar mid-century housing stock creates comparable duct conditions. We also work in Pikesville, MD, Owings Mills, MD, Reisterstown, MD, and Catonsville, MD. Scheduling and dispatch are coordinated from our Baltimore office, with local crews assigned to minimize drive time to your home.
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 Company in Randallstown
No permit is required for standard air duct cleaning or dryer vent cleaning in Baltimore County. Duct sealing that involves structural modification of the HVAC plenum may require inspection, and we handle that paperwork when it applies. Most Randallstown jobs are completed start-to-finish in a single scheduled visit.
We typically schedule within 2 – 4 business days, with dispatch from our Baltimore office. We do not promise same-day arrival because duct cleaning is a scheduled, in-home service that requires proper equipment loading and crew assignment. Call (361) 326-5060 to check current availability.
Yes. We work in HOA-managed communities throughout Randallstown and arrive in marked vehicles with uniformed, background-checked technicians. We carry proof of insurance and can provide documentation for your association if required. Let us know any gate codes or parking restrictions when you book.
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 Randallstown Customers Say
"Dryer vent was packed with lint and took two hours to dry a load. Cleaned it out from the roof cap down. One cycle again."
- Paula Q."No sales pitch. Told me which parts of the system were fine and only cleaned what needed it."
- Ted L."They checked each section with a camera and showed me the dust before and after. Thorough and honest."
- Nicole H.