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
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Before
AfterAir Duct Cleaning Company in Derby, CT
Air duct cleaning in Derby, CT typically costs $350 – $650 for a whole-home system and is scheduled by appointment with a written price confirmed before work begins. Derby’s mix of 19th-century mill housing and mid-century ranches creates unique duct conditions that affect both pricing and method. We’re Hollis Air Duct Cleaning, part of the Garrison Partners family, and our crews serve Derby from our Hartford office with background-checked, uniformed technicians and the 365-Day Done Right Promise on every job. Call us at (361) 326-5060 for a free estimate.
Why Derby Homes Are Different
Derby’s housing stock tells the story of the Naugatuck Valley’s industrial past. Much of the city was built in the late 1800s and early 1900s for workers at the Farrel Foundry and other mills along the Naugatuck River. These homes often have undersized, unlined galvanized ductwork that has never been upgraded, collecting debris for generations. On the east side, postwar capes and ranches may have original flex duct that sags in humid crawl spaces and accumulates dust the way a vacuum hose lying on a basement floor would.
The local climate makes things harder. Derby sits in a valley that traps moisture and pollutants, and cold winters with frequent freeze-thaw cycles push condensation inside ductwork. When heating systems kick on in October, homeowners often smell musty air that has been sitting in damp ducts since spring. Technicians here regularly find black soot and metallic dust in older homes near the old industrial sites, residue from decades of foundry emissions that settled into attics and crawl spaces and still works its way into living spaces.
The Housatonic River’s humidity and the valley’s temperature inversions mean microbial growth is more common here than in inland Connecticut towns. A standard cleaning in Derby often requires more attention to the main trunk lines and returns than a comparable job in drier terrain.
Our Main Derby Services
Most Derby homeowners call us for one of three jobs, each with its own page and pricing details.
Air Duct Cleaning in Derby
We clean the full supply and return system using a Rotobrush rotary brush system for agitation and a Nikro negative-air machine to pull debris out of the home entirely. In Derby, we pay special attention to galvanized mains in prewar homes, where decades of industrial particulate can coat duct walls. We also inspect flex duct in postwar ranches for sagging or separation at joints. Every job gets before-and-after photos and a written price before we start. Air Duct Cleaning in Derby
Dryer Vent Cleaning in Derby
Dryer vent blockages are a leading cause of house fires, and Derby’s older homes often have long, convoluted vent runs through walls or into crawl spaces that lint accumulates in. We use rotary brushes and high-velocity air tools to clear the full run from appliance to termination, then verify airflow with a meter. We check the exterior cap for proper operation, which matters in Derby where humid summers can cause flap mechanisms to stick. Dryer Vent Cleaning in Derby
Duct Sealing in Derby
Leaky ducts waste 20 – 30% of heated and cooled air in typical homes, and Derby’s unlined galvanized systems are especially prone to gaps at joints and seams. We apply duct sealing mastic and reinforced tape to accessible joints, then pressure-test the system to confirm improvement. In homes with crawl space or attic runs, sealing also reduces the draw of musty or contaminated air into the system. Duct Sealing in Derby
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 Derby
We stock parts and filters for Honeywell, Aprilaire, and Abatement Technologies systems commonly found in Connecticut homes, and we carry Guardsman filtration products for upgrades. Most replacement items are available same-day or next-day through our Hartford office. See our brands for the full list.
Pricing for Air Duct Cleaning Company in Derby, CT
| Service | Typical range in Derby |
|---|---|
| Whole-home air duct cleaning (single system) | $350 – $650 |
| Whole-home air duct cleaning (two systems) | $550 – $950 |
| Dryer vent cleaning | $120 – $200 |
| Duct sealing (typical single-family home) | $450 – $850 |
| Main trunk line cleaning only | $200 – $350 |
| Return duct cleaning (separate from supply) | $150 – $275 |
| Sanitizing/microbial treatment | $75 – $150 |
| Filter replacement (standard 1-inch) | $15 – $35 each |
| Filter replacement (media filter, 4 – 5 inch) | $45 – $85 each |
| Camera inspection of ductwork | $125 – $225 |
Jobs in Derby’s older homes often run toward the higher end of these ranges because galvanized ductwork requires more brush passes and the main lines are frequently smaller diameter than modern standards, slowing debris removal. We give one flat price per system, agreed in writing before any work starts. That price does not change when the technician arrives.
Neighborhoods We Serve in Derby
We work across Derby’s full residential area, from the riverfront historic districts to the postwar developments on the east side. Scheduling is typically available within a few business days, with dispatch coordinated from our Hartford office.
- Derby Neck
- East Derby
- Hilltop
- Derby Downtown Historic District
- Osbornedale area
Service Area – Cities Near Derby
Our crews travel throughout the Lower Naugatuck Valley and surrounding communities. We regularly schedule jobs in Ansonia, CT, Shelton, CT, West Haven, CT, and as far west as Orange, OH for property owners with multiple locations.
Serving Derby, CT - Our Local Coverage Area
We’re based in the Derby 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 Derby
No permit is required for standard residential air duct cleaning or dryer vent cleaning in Derby. Duct sealing that involves modifications to the HVAC system may need review if you’re also replacing the furnace or central air unit, but standalone sealing work does not. We handle any documentation if a permit situation arises, which is rare. Call (361) 326-5060 if you have a specific project in mind.
We typically book appointments within 3 – 5 business days, though peak seasons (early fall for heating prep, late spring for allergy concerns) can stretch to a week. Our phones are answered by a live person 24 hours a day, so you can call (361) 326-5060 anytime to check current availability. We do not overbook; arriving inside the quoted window is part of The Garrison Standard.
Yes, we clean ductwork in Derby’s condo conversions and multi-family properties, including some of the renovated mill buildings near the Naugatuck River. Access requirements vary by building, so we coordinate with property managers or HOA contacts to confirm equipment access and any building-specific rules before scheduling. Call (361) 326-5060 and we’ll walk through the logistics for your specific building.
Ready to schedule? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate. We’ll confirm your price before any work begins, and every job is backed by our 365-Day Done Right Promise.
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 Derby Customers Say
"Sealed some leaking duct joints in the crawl space with mastic. Rooms that were always cold now get air."
- Ronald W."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.