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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AfterHow Much Does Air Duct Cleaning Cost in Baltimore?
Air Duct Cleaning in Baltimore typically costs $350 to $800 for a standard single-family home, with most rowhouses and detached houses landing between $425 and $650. That price covers the full system: supply and return ducts, registers, grilles, the blower compartment, and the air handler. Larger homes with multiple zones or heavy buildup run $800 to $1,400.
That’s the range before anyone walks through your door. If a quote comes in well under $300, ask what isn’t included, because something always is. Hollis Air Duct Cleaning writes the price down before we touch a single duct, and that number does not move once our technicians are inside. Curious about how much air duct cleaning costs in Boston, MA? We serve that market too. You can reach us at (361) 326-5060 for a free estimate, and a live person answers, day or night.
Air Duct Cleaning Cost Breakdown (2026)
Here’s what Baltimore homeowners actually pay in 2026, broken down by line item. These are ranges, not teasers. The final written price depends on your home’s size, how many runs you have, and what the technician finds when the system is opened up.
| Service | Typical Baltimore Price | What It Covers |
|---|---|---|
| Standard whole-home duct cleaning | $350 – $650 | Supply and return ducts, all registers and grilles, blower compartment |
| Large or multi-zone home | $650 – $1,400 | Two or more HVAC zones, 15+ runs, finished basement or attic ducts |
| Air handler and coil cleaning | $125 – $300 | Evaporator coil, blower wheel, drain pan. Added to a full clean |
| Individual vent or register add-on | $25 – $60 each | One extra run cleaned beyond the standard count |
| Dryer vent cleaning | $125 – $225 | Full dryer vent line, lint trap housing, exterior termination |
| Duct sealing (mastic) | $400 – $1,200 | Sealing leaks at joints, boots, and plenum connections. Priced by linear feet |
| Post-renovation or mold-affected cleaning | $700 – $1,800 | Heavy debris removal, negative-air containment, sanitizing treatment |
| Sanitizing or deodorizing treatment | $100 – $250 | EPA-registered fogging applied after cleaning, not as a substitute for it |
What pushes a Baltimore job to the higher end? Old ductwork in pre-1950 rowhouses that has never been cleaned, systems with visible mold or rodent debris, and homes where the return is undersized and pulling dust from a damp basement. What keeps it low? A house under 1,800 square feet with a single zone, easy attic or basement access to the trunk line, and a system that’s been maintained. Our technicians measure and write the price before any equipment comes off the truck, so you know which end of the range you’re on before the work starts.
For the full picture on how we handle a standard job, see our home page, where we lay out the process from arrival to final walkthrough.
What Affects Air Duct Cleaning Pricing in Baltimore
Baltimore is not a generic market-nor is Brooklyn, NY. The housing stock here is old, the summers are humid, and a lot of the ductwork running through Fells Point, Canton, and Hampden was installed before anyone thought about air sealing. Here’s what moves the number.
- Size and age of the home. A 1,200-square-foot rowhouse in Federal Hill has far fewer runs than a 3,500-square-foot colonial in Roland Park. More runs mean more time, more equipment setup, and a higher price. Homes built before 1950 often have ductwork that’s been added to, patched, or rerouted over decades, which takes longer to clean properly.
- Number of HVAC zones. Baltimore homes with a finished basement, an attic system, or a separate unit for an addition have two or three zones. Each one needs its own cleaning pass. Multi-zone jobs routinely land in the $800 to $1,400 range.
- Level of contamination. A system that’s been running for 15 years with no cleaning has a thick layer of dust, pet dander, and debris caked to the duct walls. In Baltimore’s humid summers, that buildup can support mold growth in the cooler return ducts. Heavily contaminated systems take longer and may need sanitizing treatment after cleaning.
- Access and duct configuration. Flexible duct in a tight attic, a crawlspace you have to belly through, or a trunk line buried behind finished drywall all add labor. Homes in Charles Village and Mount Vernon with original plaster walls and limited access points take more care than a newer build in Canton.
- Add-on services. Cleaning the air handler and evaporator coil, sealing leaks with mastic, or cleaning the dryer vent while we’re there changes the total. These aren’t upsells for their own sake. A dirty coil recontaminates clean ducts within weeks, and an unsealed joint in a Baltimore basement pulls in exactly the damp air you don’t want circulating.
- Post-renovation or special conditions. Drywall dust from a kitchen remodel, rodent activity in a vacant rowhouse, or water damage from a basement flood all require more containment and time. These jobs start around $700 and can reach $1,800.
The equipment matters here too. We use Rotobrush rotary brush systems to scrub duct walls, Nikro negative-air machines to pull debris out under containment, and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman. Negative air means the dust we’re loosening gets captured, not blown into your living room. That’s why our technicians can work in an occupied home without you needing to leave or cover your furniture in plastic.
How to Save on Air Duct Cleaning
You don’t need to chase the lowest bid to save money. You need to avoid paying twice because the first job was done halfway. Here’s what actually works.
- Bundle duct cleaning with dryer vent cleaning. Having both done during the same visit saves the trip charge and the setup time. Most Baltimore homeowners save $50 to $100 by combining them.
- Skip sanitizing if your ducts don’t need it. A fogging treatment isn’t required on every job. If there’s no mold, no rodent contamination, and no odor problem, cleaning alone is enough. We’ll tell you honestly if you don’t need it.
- Get the coil cleaned at the same time. A dirty evaporator coil pushes dust right back through your freshly cleaned ducts. Doing both in one visit costs less than two separate appointments and is the single best way to make the clean last.
- Address duct leaks before they undo the cleaning. If your return system is pulling air from a damp crawlspace or basement, sealing those leaks matters more than another cleaning. Mastic sealing is priced by linear feet, so a smaller job is affordable.
- Ask for the written price upfront. This is the real money-saver. A price written before work begins is a price that can’t change once the technician is in your basement. Call (361) 326-5060 for a free estimate, and we’ll put the number in writing before anyone touches a duct.
One more thing: don’t schedule duct cleaning right after a renovation without telling the company. Drywall dust and construction debris require different containment than a routine clean. Being upfront about that saves you a second visit and a second bill.
FAQs – Air Duct Cleaning Cost
Is $99 air duct cleaning in Baltimore a real price?
No. A $99 duct cleaning doesn’t clean your whole system. It usually covers a handful of vents and a quick vacuum at each register, leaving the trunk lines, the returns, and the air handler untouched. The low price exists to get a technician into your home, where the real quote gets built on-site for additional services. A legitimate whole-home cleaning in Baltimore runs $350 to $800, comparable to air duct cleaning costs in Cleveland, OH. If the opening price sounds too low to be honest, it usually is. Call (361) 326-5060 for a written price before any work starts.
How much does it cost to clean air ducts in a Baltimore rowhouse?
Most Baltimore rowhouses fall between $400 and $650 for a standard whole-home cleaning. Rowhouses typically have fewer runs than a detached home, which keeps the price down, but older rowhouses in neighborhoods like Canton and Fells Point often have flexible duct that’s been added to or rerouted, and limited access to the trunk line. That extra labor can push the price toward the top of the range. The only way to know for sure is a written estimate based on your actual system.
How often should air ducts be cleaned in Baltimore?
Every three to five years for most homes, and every two to three years if you have pets, allergies, recent renovations, or a system that’s been running with a dirty filter. Baltimore’s humid summers and older housing stock mean dust and moisture accumulate faster than in drier markets. If you notice musty odors when the AC kicks on or visible dust around your registers a week after cleaning, it’s time. A cleaning that isn’t done right will show those symptoms long before the three-year mark.
Does air duct cleaning actually save money on energy bills?
It can save $50 to $150 a year on heating and cooling in a typical Baltimore home, but only when the ducts are also sealed. Cleaning removes the debris that restricts airflow. Sealing closes the leaks that waste conditioned air. Do one without the other and you’ll see a smaller return. A restricted system makes your HVAC work harder, which shortens its life. The energy savings are real, but they come from cleaning and sealing together, not cleaning alone.
Is it cheaper to clean ducts or replace them?
Cleaning is almost always cheaper. A full duct cleaning runs $350 to $1,400 depending on your home. Replacing ductwork costs $3,000 to $8,000 or more, and that’s before drywall repair. Replacement only makes sense when ducts are crushed, disconnected, heavily mold-contaminated beyond cleaning, or made of materials that shouldn’t be cleaned. In most Baltimore homes, the ducts are sound and just need to be cleaned and sealed. The exception is old flex duct that’s torn, sagging, or full of standing water, and we’ll tell you straight if that’s what we find.
Every Hollis job is covered by the 365-Day Done Right Promise. If the work fails within a year, we come back and make it right at no charge, including a second visit. That’s in writing, on every job, because a price you can trust should come with work you don’t have to think about again.
Why Baltimore Homeowners Call Hollis
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004, and every location operates independently under The Garrison Standard. That standard is simple: arrive inside the quoted window, price the job in writing before work begins, complete it by the book, and leave the site clean. Our technicians are background-checked and uniformed, so you know who’s walking into your home before they knock. The Garrison Code lays out exactly how they work in your house, and we hold them to it.
We don’t compete on teaser pricing. We compete on discipline. Calls are answered by a live person 24 hours a day, 7 days a week, not a voicemail loop. Free estimates come with a written number that stays put. And when we say the work is covered for a full year, that’s backed by the 365-Day Done Right Promise, not a vague satisfaction claim.
If you’re ready for a straight answer on what your Baltimore home will cost, call (361) 326-5060. We’ll give you a free estimate, put it in writing, and show up when we said we would. That’s the whole pitch.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Baltimore since 2004.
Pricing reflects the Baltimore market as of 2026. Hollis Air Duct Cleaning offers free estimates – call (361) 326-5060.
What Our Customers Say
"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."Duct sealing along with the cleaning cut our summer bill. Straight talk and fair price."
- Gwen O.