Air Duct Cleaning Before & After in Chicago, IL
We’ve cleaned ducts in Chicago homes since 2012, and we’ve learned one thing: homeowners don’t believe us until they see it. That’s why we camera-inspect every job before we start and after we finish. The photos below show what decades of dust, construction debris, and pet dander actually look like inside a duct, and what a professional clean with Rotobrush and Nikro equipment leaves behind. No staging, no stock images - just what our technicians pulled out of real Chicago ductwork.
Recent Transformations
Heavy Dust Accumulation in Lincoln Park Vintage Condo
The owner of a 1920s courtyard building near Fullerton and Halsted called us because every surface in her unit collected dust within 48 hours of cleaning. Our camera found supply lines packed with gray, fibrous buildup nearly an inch thick - decades of plaster particulate, previous renovation debris, and ordinary household dust compressed by the city’s seasonal heating and cooling cycles. We used a Rotobrush BEAST series unit with HEPA containment, agitated the deposits through the full run, and extracted everything with a Nikro portable collector. The after inspection showed bare galvanized metal. She’s since told us she dusts half as often, and her HVAC filter lasts the full three months instead of clogging in five weeks.
Pet Hair Clog in Wicker Park Single-Family
A couple on North Avenue with two golden retrievers had noticed their dryer taking two cycles and their bedroom vents barely pushing air. The camera revealed a main return trunk in the basement matted with compacted dog hair, bound together with lint that had backflowed from an overloaded dryer vent. We cleaned the full duct system and the dryer vent as one job - the hair was so dense in one elbow that we had to cut an access panel, clear it by hand, and seal the patch with mastic. Airflow at the bedroom registers went from 42 CFM to 118 CFM. The dryer vent, which had been a legitimate fire risk, now exhausts freely to the exterior wall.
Post-Renovation Construction Debris in West Loop Loft
A homeowner on Washington Boulevard had converted his timber loft’s second bedroom and assumed the contractor had protected the ducts. They had not. Our pre-clean camera showed drywall dust, cutoff saw particulate, and actual wood shavings packed into the main supply trunk - the kind of abrasive debris that destroys blower motors and bearings. We ran sequential agitation passes with poly whisk brushes to avoid scoring the galvanized steel, then HEPA-vacuumed the full system including the air handler cabinet. The after footage showed clean metal throughout. We also found his blower wheel was out of balance from dust loading; we cleaned it in place and his system has run quieter since.
Mold and Mildew in Hyde Park Garden Unit
A professor in a garden-level unit near the Midway Plaisance had noticed a musty smell every time the heat cycled on, worse after summer humidity. The camera showed patchy mold growth on the interior of flexible duct runs in the crawl space - not catastrophic, but enough to trigger her allergies and indicate a condensation problem. We removed the biological growth with mechanical agitation and applied an EPA-registered sanitizer through the full system, then sealed the duct seams with mastic to reduce future moisture intrusion. The odor disappeared immediately. We recommended she address the crawl space dehumidification separately, which she did; our 90-Day Done Right Promise covers the ductwork specifically, and we made clear where our work ended and the building envelope work began. That’s the square deal - one honest price, shown before we start.
Disconnected Ductwork in Portage Park Bungalow
A family on Central Avenue had a second floor that stayed ten degrees colder than the first, and their gas bills had climbed every winter. Our inspection found a main supply duct completely detached in the attic - blowing heated air directly into the insulation for what the homeowner estimated was two or three years based on when the problem started. We reconnected the run with proper mechanical fasteners, sealed every joint in the attic with mastic and mesh, and pressure-tested the repair. The second floor reached target temperature for the first time in January. We completed the repair and full system cleaning in a single visit, which is how most of our jobs go.
Decades of Neglect in Rogers Park High-Rise
A building manager on Sheridan Road brought us into a 1960s high-rise where the exhaust ducts for the kitchen and bath had never been cleaned. The camera showed black, greasy residue caked on the interior - cooking oils, soap scum, and atmospheric particulate from fifty-plus years of Lake Michigan exposure. We worked floor by floor during off-hours to avoid disrupting residents, using portable Nikro equipment because the building’s electrical couldn’t support our larger trailer-mounted unit. The grease loading was so severe in one stack that we collected it in buckets rather than risk overwhelming the vacuum filters. The building’s board now has us on an annual maintenance schedule, which is the only way to keep exhaust systems functional in vintage Chicago high-rises.
Want Results Like These?
Every job we do gets the same camera inspection, the same professional equipment, and the same 90-Day Done Right Promise backed in writing. We’re owner-operated, we’ve served Chicago since 2012, and a live person answers our phone at (877) 502-3903 - 24 hours a day, not a voicemail, not an app. Call for a free estimate. We’ll show you exactly what your ducts look like before we quote a single dollar, and we’ll be there when we say.
Written by Ray Dempsey, Owner at Bellows Air Duct & Vent Co. of Chicago, serving Chicago since 2012.