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.
Fast, Reliable Air Duct Cleaning Across New Canaan
Air duct cleaning in New Canaan typically runs $450 – $850 for a full residential system, and our crews schedule most jobs within a week of your call. New Canaan’s wooded lots and mid-century housing stock create a specific set of duct problems you won’t find in every Connecticut town, from mold in basement flex lines to pollen loads that would overwhelm a standard cleaning. We’ve worked the colonials off Oenoke Ridge, the ranches near Silvermine Road, and the split-levels down by the reservoir long enough to know which homes need moisture control alongside debris removal. Dispatch and scheduling are coordinated from our Hartford office, but the crews serving New Canaan live in the area and carry the right equipment for the town’s particular challenges. Call (361) 326-5060 and we’ll put a written price in front of you before anyone touches your system.
Why Hollis Air Duct Cleaning Is New Canaan’s Preferred Air Duct Cleaning Company
New Canaan homeowners have a particular reason to be cautious about who they let into their basements. The town’s older stock of galvanized ductwork and original flex lines sits in unfinished, often damp spaces where a careless technician can disturb mold colonies or damage brittle connections without knowing what they’ve done. Our Air Duct Cleaning team has been working these homes since 2004, and we’ve built our reputation on showing up inside the quoted window, pricing in writing before the first vent cover comes off, and leaving the site clean.
Roy Castellanos runs this operation under The Garrison Standard, which means background-checked, uniformed technicians on every job and phones answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday for someone to confirm your appointment. The 365-Day Done Right Promise covers every repair 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 satisfaction guarantee; it’s a specific, dated commitment you can hold us to.
We’ve earned a strong local reputation in New Canaan by treating the town’s duct problems as the moisture-and-mold jobs they often are, not generic dust removals. Customers from the Lakeview area to the Country Club neighborhood have told us the difference is obvious once they see what comes out of a system that’s been running through humid Connecticut summers and pollen-heavy springs without proper cleaning.
HVAC Duct Cleaning in New Canaan
HVAC Duct Cleaning in New Canaan means addressing a system that’s been fighting humidity, pollen, and seasonal groundwater intrusion since the day it was installed. We use a negative-air method with a Nikro portable HEPA vacuum to pull debris from the entire trunk-and-branch network while a Rotobrush rotary brush system scrubs the interior walls of each supply and return line. For a typical New Canaan colonial or ranch, you’re looking at $550 – $850 for a full system, with smaller homes or partial cleanings starting around $450.
The job matters here more than in drier climates. Southern Connecticut’s humid summers and freeze-thaw winters mean HVAC systems run nearly year-round, so condensate, mold, and rodent activity routinely colonize duct interiors. In a wooded town like New Canaan, spring pollen and fall leaf litter become heavy duct debris, and basement ducting sees seasonal dampness from wetter springs and residual storm flooding. A technician who doesn’t account for that moisture profile is only doing half the job.
Supply Duct Cleaning
Supply lines push conditioned air into your living spaces, which means any mold or particulate in those lines goes straight into the rooms where you sleep and eat. We seal each supply register before cleaning to prevent blowback into the house, then run the rotary brush and vacuum combination from the trunk to the vent. In New Canaan’s mid-century homes with original galvanized supply branches, we’re especially careful with corroded seams that can open under agitation.
Return Duct Cleaning
Return lines pull air back to the handler, and they’re the first place you’ll find concentrated dust, pet hair, and the fine pollen that gets through standard filters. New Canaan’s dense tree canopy produces some of the heaviest spring pollen loads in Fairfield County, and return ducts act like collection chambers for that material. We inspect the return plenum and filter rack for gaps that let unfiltered air bypass the system, then clean the full return path to the air handler.
Vent Cleaning in New Canaan
Vent Cleaning in New Canaan is often the entry point homeowners notice first: a dark ring around the register, reduced airflow from one room, or a musty smell when the system kicks on. We remove every supply and return cover, clean the boot and first few feet of duct behind it, and treat the register itself with a non-residue antimicrobial where moisture staining indicates mold activity. Individual vent cleaning runs $85 – $150 per register when done as a standalone service, though most New Canaan customers bundle it into a full system cleaning for better value.
The registers in older New Canaan homes tell stories. You’ll find painted-shut covers from the 1960s, retrofitted dampers that no longer move, and in homes near the wooded lowlands, the occasional mouse nest packed into the boot behind the grate. Our technicians document what they find with before-and-after photos, so you see exactly what was in your system and what we removed.
Register and Grille Restoration
Metal registers in mid-century homes often carry decades of paint layers, corrosion, and accumulated grime that standard wiping won’t touch. We remove, soak, and hand-clean each cover, restoring airflow through the original louvers without damaging the finish. For painted-shut registers, we’ll note the issue and recommend whether restoration or replacement makes more sense.
Boot and Short-Run Cleaning
The boot, the angled transition piece behind your wall or floor register, is where debris settles and moisture condenses in New Canaan’s humid basement conditions. We clean the full boot and the first 3 – 5 feet of attached duct, which catches the bulk of localized buildup without the cost of a full branch-line cleaning. This is the right scope when one room smells musty or shows reduced airflow while the rest of the house performs normally.
Trusted Brands We Service in New Canaan
We carry professional-grade equipment and filtration products from Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman, the same tools and components commercial crews use in hospitals and schools. For New Canaan homeowners, that means no waiting on special orders when a cleaning reveals a failed filter rack, a disconnected damper, or a plenum that needs sealing with mastic. Our vans stock Aprilaire media filters and Guardsman antimicrobial treatments specific to the mold and pollen challenges we see in Fairfield County’s wooded towns. If your system needs a filtration upgrade after cleaning, we can install it during the same visit with the same written price guarantee.
Common Air Duct Cleaning Problems We See in New Canaan Homes
- Mold in flex duct and fiberglass liners. New Canaan’s mid-century ranches and split-levels often have original flex duct running through damp, unfinished basements. The combination of high summer humidity and poor drainage on wooded lots creates conditions where mold colonizes the interior liner, blowing spores into living spaces every time the handler cycles.
- Mouse nests in trunk lines. In the wooded, low-lying neighborhoods off Ponus Ridge and New Canaan Road, we regularly find rodent activity in the main trunk, especially where ducts pass through stone foundations with gaps. A mouse nest in a warm supply trunk is not just a debris problem; it’s a fire risk and an air quality hazard.
- Pollen and leaf litter in return systems. New Canaan sits under one of the Northeast’s densest tree canopies, and spring pollen loads are extraordinary. Return ducts pull that material through gaps around filter racks and aging return grilles, coating blower wheels and heat exchangers with a green-yellow film that reduces efficiency and spreads allergens.
- Corroded galvanized seams in original ductwork. Homes built from the 1920s through the 1970s carry galvanized steel duct that rusts from the inside out in humid conditions. Cleaning reveals seam separations and pinhole corrosion that weren’t visible from the outside, and we document these findings so you can address them before they leak conditioned air into your basement.
Pricing for Air Duct Cleaning in New Canaan, CT
Here’s what air duct cleaning costs in the New Canaan market, based on the homes we actually work on:
| Service | Typical Range |
|---|---|
| Full residential system cleaning (typical 3 – 4 bedroom colonial or ranch) | $550 – $850 |
| Smaller home or condo, partial system | $450 – $600 |
| Large home or multi-zone system with 15+ registers | $850 – $1,200 |
| Individual vent cleaning (standalone, per register) | $85 – $150 |
| Video inspection of full system | $150 – $250 |
| Dryer vent cleaning (bundled with duct cleaning) | $75 – $125 |
What moves you within these ranges? Number of registers and returns, accessibility of basement ductwork, whether mold remediation is needed inside the lines, and whether we find disconnected or damaged ducts that need sealing before cleaning proceeds. We also handle Duct Sealing in New Canaan when your inspection reveals significant leakage. One flat price per system, agreed in writing before work starts. No per-vent add-ons, no surprise charges when the technician arrives. You’ll get before-and-after photos of your own ducts, and if you’re not satisfied the work was done thoroughly, the 365-Day Done Right Promise gives you a year to hold us accountable. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near New Canaan
Our crews work throughout southern Fairfield County, including New Canaan and the surrounding towns of Norwalk, Stamford, Georgetown, and Cos Cob. The same scheduling team, the same equipment, and the same written pricing standard apply whether you’re off Oenoke Ridge or down by the Stamford border. We also handle Dryer Vent Cleaning in New Canaan for homeowners who want both services handled in one appointment.
Serving New Canaan, CT - Our Local Coverage Area
We’re based in the New Canaan 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 New Canaan
A typical full-system residential cleaning in New Canaan runs $550 – $850, with smaller homes starting around $450 and larger or multi-zone systems reaching $1,200. The price depends on register count, system accessibility, and whether mold remediation or duct sealing is needed. Call (361) 326-5060 for an exact quote; estimates are free.
Low teaser prices usually mean per-vent add-ons that balloon at the door, or a technician with a shop vacuum and a brush who can’t reach your full system. We price the complete job in writing before work starts, with no per-vent charges. The difference is equipment: our Rotobrush and Nikro negative-air systems cost more to operate than a portable vacuum, but they clean the entire trunk-and-branch network, not just what you can see from the register.
We photograph the interior of your ducts before and after cleaning, and we show you those images before we pack up. You’ll see the debris, mold, or buildup that was there, and the condition after removal. If a company won’t show you photos of your own system, that’s a signal to ask harder questions.
Every 3 – 5 years for most homes, but New Canaan’s combination of wooded pollen loads, humid summers, and older ductwork often pushes that toward the shorter end. If you have allergies, pets, or a finished basement with visible moisture issues, annual inspection and cleaning every 2 – 3 years is the smarter interval. We can assess your specific system during a free estimate visit.
The 365-Day Done Right Promise covers every job in writing. If a repair we make fails within a year, or if the cleaning doesn’t resolve the issue we were hired to address, we return and make it right at no charge, including a free second visit. That’s a dated, specific commitment, not a vague satisfaction guarantee. Call (361) 326-5060 and we’ll explain exactly how it applies to your job.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving New Canaan and southern Fairfield County.




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