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 Norwalk
Air duct cleaning in Norwalk, CT typically runs $350 – $650 for a full residential system, with most jobs completed in a single visit. If your home was built in the 1950s or 1960s, you’re probably dealing with original galvanized steel ductwork that hasn’t been touched in decades. Call (361) 326-5060 for a free estimate with a written price before any work starts.
We’ve been driving to Norwalk since 2004, dispatching from our Hartford office with crews who know the difference between a Norwalk Park ranch and a Silvermine split-level. The housing stock here is specific: single-story wood-framed tract homes, low-pitched roofs, tight attics, and duct systems that were never designed for sixty years of continuous use. That local knowledge changes what we bring on the truck and what we expect to find when we open the registers.
Our Air Duct Cleaning team serves all of Norwalk, from the Post Road corridor up to the New Canaan line. We don’t guess at your layout. We’ve worked enough of these homes to know where the supply trunks run, where the attic access is, and where the original mastic has likely baked off.
Why Hollis Air Duct Cleaning Is Norwalk’s Preferred Air Duct Cleaning Company
We’ve built our reputation in Fairfield County one written estimate at a time. Roy Castellanos runs this operation under The Garrison Standard, which means your technician arrives inside the quoted window, in uniform, with a background check you can verify. No subcontractor roulette. No van with a magnet sign.
Our 365-Day Done Right Promise covers every job in writing. If the work fails within a year, we return and make it right at no charge, including a free second visit. That’s not a verbal assurance; it’s printed on your invoice.
Phones are answered by a live person, 24 hours a day, seven days a week. When you call (361) 326-5060, you reach someone who can schedule your Norwalk appointment, not a callback queue that dumps you to Monday.
We price in writing before touching your system. The number on the page is the number at the door. Our customers in Norwalk tell us that’s the main reason they stopped shopping around.
Air Duct Repair in Norwalk
Air Duct Repair in Norwalk is almost always tied to the original galvanized steel ductwork found in 1950s tract homes. The seams rust, the joints separate, and the mastic that sealed them has cooked off in 140°F attics. A typical repair runs $200 – $450 per section, with full trunk replacement reaching $800 – $1,200 when the damage is extensive. We only know after inspection, and the inspection is free.
Crushed and Disconnected Runs
In Norwalk Park and similar neighborhoods, we find supply lines that have been stepped on, buried in insulation, or pulled apart by thermal expansion. The Rotobrush camera shows us exactly where the break is before we cut access. Reconnection with mechanical fasteners and fresh mastic takes two to three hours.
Rust and Pinhole Leaks
Galvanized steel lasts decades but not forever. Once the zinc coating fails, rust spreads from the inside out. We patch small sections with sheet metal and sealant. When the trunk is too far gone, we replace it with modern duct board or flex, sealed to the same standard as new construction.
Ductwork Cleaning in Norwalk
Ductwork Cleaning in Norwalk means source removal from systems that have never been properly cleaned. A full residential clean runs $350 – $650, with commercial systems starting at $800. We use Rotobrush rotary brush systems and Nikro negative-air machines to agitate debris at the source and pull it out under controlled pressure, not blow it through your house.
What We Pull Out of Norwalk Ducts
The typical 1,200-square-foot Norwalk ranch yields five to fifteen pounds of compacted dust, plus whatever the previous owners left behind. Construction debris from 1955. Pet hair. Rodent droppings from the field behind the house. We HEPA-filter the exhaust and show you the before-and-after photos.
Video Inspection Before and After
Our camera runs the full length of every accessible trunk. You see what we see: the crushed run, the disconnected boot, the rust hole blowing attic air into your bedroom. After cleaning, we run it again to prove the debris is gone and the repairs hold.
Trusted Brands We Service in Norwalk
We stock parts and filtration products from Aprilaire, Abatement Technologies, and Guardsman, plus we carry Rotobrush agitation heads and Nikro HEPA collection units on every truck. For Norwalk homeowners, that means no waiting for a parts run to Bridgeport. If your system needs a new filter rack, a UV light housing, or a sealed return plenum, we have it or we get it fast. Our technicians are trained on the specific pressure ratings and sealant protocols each manufacturer requires. We don’t improvise.
Common Air Duct Cleaning Problems We See in Norwalk Homes
- Original galvanized steel ducts with rusted seams. The 1950s tract homes in Norwalk Park and Cranbury were built with steel that wasn’t meant to last seventy years. Rust opens pinholes, and pinholes pull attic air into the system. Cleaning without sealing just gives the debris a new path back into your house.
- Baked-off mastic in 140°F attics. Norwalk’s uninsulated attic ducts sit under low-pitched roofs with minimal ventilation. Summer heat cooks the duct tape and mastic until it flakes away. We find three out of four Norwalk Park homes with at least one major seal failure.
- Rodent entry from nearby fields. When the mastic fails, the gap invites mice and squirrels from the open land behind these subdivisions. We clean the contamination, seal the entry, and recommend Guardsman filtration to catch what gets through.
- Crews skipping the plenum because access is tight. Norwalk’s small attics and crawlspaces make it hard to reach the air handler. Some cleaners skip it. We cut proper access panels, clean the plenum with the same agitation tools, and seal the cut afterward.
Pricing for Air Duct Cleaning in Norwalk, CT
A typical residential duct cleaning in Norwalk runs $350 – $650 for a full system, depending on the number of registers, the accessibility of the attic trunk, and whether we find damage that needs repair. Commercial systems in Norwalk office parks start at $800 and scale with square footage and HVAC zoning. Dryer vent cleaning is typically $120 – $180 when bundled with ductwork service.
What moves the price: homes with more than twelve registers, ductwork requiring access panel cuts, or rodent contamination needing antimicrobial treatment. What doesn’t move the price: we don’t charge per vent, we don’t add trip fees, and we don’t rewrite the estimate at your door. The price is written before we start. Period.
Call (361) 326-5060 for a free estimate. We’ll ask about your home’s age, square footage, and any known issues, then give you a range you can plan around.
We Also Serve Cities Near Norwalk
Our crews cover the full Fairfield County area, including Air Duct Cleaning in Norwalk and surrounding communities. We regularly schedule jobs in New Canaan, Stamford, Old Greenwich, and Georgetown, often routing same-day appointments between nearby towns to keep our response times tight.
Serving Norwalk, CT - Our Local Coverage Area
We’re based in the Norwalk 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 Norwalk
Because the original mastic and duct tape in 1950s Norwalk tract homes has baked off in 140°F attics, leaving gaps that pull in attic air and rodent debris. Cleaning without sealing just gives the new debris a direct path back into your living space. We seal every joint with fresh mastic and verify with a pressure test before we leave. Call (361) 326-5060 to schedule an inspection.
Every three to five years for most Norwalk homes, but every two to three if you have pets, allergies, or visible dust at the registers. The combination of original steel ductwork, heavy summer cooling loads, and dust from nearby I-95 makes these systems accumulate faster than newer homes in Stamford or New Canaan. We inspect for free and tell you honestly if you’re due.
Crushed supply runs from workers walking in the attic, disconnected boots where the mastic failed, rust holes blowing fiberglass insulation into the airflow, and rodent nesting material at the trunk joints. We document everything on video and review it with you before quoting any repair. The inspection itself is free with a cleaning estimate.
Usually yes, but not always. Most Norwalk homes have enough register access and attic entry to reach the full system. When the plenum or a buried trunk is inaccessible, we cut a small access panel, complete the work, and seal it with a removable cover that meets local code. We never open a wall without explaining why and getting your approval first.
MERV 11 for standard residential use, MERV 13 if you have allergies or the home has had rodent contamination. Higher is not always better: MERV 16 can restrict airflow in older Norwalk systems with undersized returns and already-strained blower motors. We check your system’s static pressure and recommend the filter that protects your air without overworking the equipment. Call (361) 326-5060 and we’ll match the filter to your specific unit.
We pulled up to a 1950s single-story in Norwalk Park and put the Rotobrush negative pressure setup on the return while our tech ran a camera inspection down the supply trunk – found three crushed and disconnected runs in the attic where the mastic had baked off, plus rodent entry points from the nearby field. After source removal and HEPA filtration, we re-sealed the joints with fresh mastic and reconnected the runs, then verified airflow at every register before leaving. That’s standard practice for us. It’s not standard in this trade.
Ready to see what’s in your ducts? Call (361) 326-5060 for a free estimate with a written price before any work starts. Roy Castellanos and our team serve all of Norwalk under The Garrison Standard: arrive inside the window, price in writing, do it by the book, leave the site clean.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Norwalk since 2004.