
Certified Air Duct Cleaning Cos Cob, CT
NADCA Source-Removal Cleaning, Coil Treatment & Dryer Vent Service. EPA-Registered Antimicrobials · Licensed & Insured
Eco-Friendly Solutions For Healthier Spaces
Reviewed by Marvin Riveira · Licensed & Insured In CT · Owner-Operated
Air quality from Open-Meteo. Temperature from the National Weather Service.
What Is NADCA ACR-2021 Air Duct Cleaning?
Air duct cleaning is the NADCA ACR-2021 documented process of returning an HVAC system to a verified level of cleanliness through source removal, holding the system under continuous negative pressure while rotary brushes, air whips, and contact vacuuming dislodge debris into HEPA-filtered collection equipment instead of pushing it through the building. The standard treats the entire system as the unit of work: supply and return ducts, registers, plenum, evaporator coil, drain pan, blower, and air handler housing, because a component left dirty recontaminates everything already cleaned.
In Cos Cob, CT, the visit runs in sequence: camera inspection of the supply and return runs, service access cut where the trunk has none, HEPA-filtered negative air connected at the main trunk, then branch-by-branch agitation worked back toward the collection unit. The air handler is opened last, and the evaporator coil, drain pan, and blower wheel are cleaned by hand. The dryer exhaust is a separate duct with its own lint load and its own fire risk, so it is cleaned and quoted separately.
- NADCA ACR-2021 source removal
- Continuous HEPA negative air
- Coil, drain pan, blower included
- Dryer vent lint removal
Why Cos Cob Systems Are Cleaned Differently
Duct cleaning carries no state license in Connecticut, New York, or Massachusetts, so the building and the method decide the job. Connecticut suburban stock built between the 1950s and the 1970s has the opposite problem: generous galvanized trunks in the basement, long branch runs out to bedroom registers, and a coil that has been in service far longer than the duct around it. Panned joist-bay returns are common in that era and cannot be cleaned without cutting proper access.
Green Restoration works to the ACR-2021 source-removal standard on every system, cleans the coil, drain pan, and blower as part of the job rather than as an add-on, and inspects each run on camera. ASHRAE 62.2 sets ventilation rates for dwellings and 62.1 for commercial buildings; neither is a cleaning standard, which is why ACR-2021 governs the work itself.
What air duct cleaning costs in Connecticut: our real 2026 price guideComplete Air Duct Cleaning In Cos Cob, CT
From NADCA source-removal HVAC cleaning to dryer vent service, coil treatment, and post-construction resets, every duct scenario handled across Cos Cob and the Greenwich service area, from Bush-Holley Historic District to Cos Cob Harbor V-zone waterfront.
Whole-Home HVAC Duct Cleaning
Full NADCA ACR-2021 source-removal cleaning of every supply trunk, return run, plenum, and register boot in Lower Cos Cob and Bush-Holley Historic District homes, with rotary brush agitation under continuous negative pressure.
NADCA ACR · Source-removal · Rotary brush
Dryer Vent Cleaning
Full dryer vent line cleaned from lint trap through flex duct and rigid run to exterior cap, including long-run rooftop installations common in 1900s Cos Cob art-colony Victorians on River Road and Strickland Road that elevate fire risk.
NFPA 211 · Lint removal · Efficiency restored
Air Handler And Coil Cleaning
Disassembled cleaning of the evaporator coil, blower compartment, and air handler interior, where Cos Cob Harbor V-zone salt air condenses on coils and seeds mold colonies that recirculate through every conditioned room.
Coil disassembly · Antimicrobial fogging

Additional Air Duct Services In Cos Cob
Post-Construction Duct Cleaning
Full ductwork reset after renovation, addition, or new construction in restored Strickland Road mill stock and Bible Street ridge backcountry estates, removing drywall dust, joint compound, and sawdust trapped during finish work.
HVAC Mold Remediation
IICRC S520-2024 compliant remediation of mold inside ductwork, coils, and air handlers in Mianus River tidal AE-zone basements, with negative-air containment, EPA-registered antimicrobial treatment, and independent ACAC clearance verification.
HEPA Filtration And Negative-Air
Hospital-grade HEPA H13 filtration paired with negative-air containment captures 99.97% of particles at 0.3 microns at the source, the prerequisite for any cleaning meeting NADCA ACR-2021 standard inside historic 1730s Bush-Holley colonial ductwork.
Rodent And Pest Decontamination
Ductwork decontamination after rodent intrusion in Cognewaugh Road backcountry attics and 1850s Italianate harbor village crawl spaces, including droppings removal, carcass extraction, structural sanitization, and entry-point sealing.
Commercial HVAC Cleaning
Commercial-grade duct cleaning for offices, restaurants, and retail spaces along the Post Road corridor and Cos Cob Harbor commercial district, with after-hours scheduling and full ASHRAE 62.1 compliance documentation.
Indoor Air Quality Testing
Pre- and post-cleaning indoor air quality testing with lab-analyzed particle counts, VOC screening, and ASTM D7338 mold spore sampling, calibrated for Cos Cob Harbor V-zone salt-air loading and Mianus River tidal humidity exposure.
UV Light And Sanitization Install
Professional in-duct UV-C light and electrostatic filtration upgrades to suppress microbial regrowth on coils and inside air handlers between scheduled cycles, an asset for Cos Cob Harbor waterfront and Sound Shore Drive homes.
Aeroseal Duct Sealing And Leak Reduction
Aeroseal aerosolized polymer sealant injected into existing duct systems in 1950s Cos Cob ranch retrofits and Bush-Holley Historic District homes, sealing joints and pinholes and cutting conditioned air loss up to 40% per ANSI/UL 181.
Multi-Unit And Condo Dryer Vent Program
Bulk dryer vent cleaning for HOAs, condos, and multifamily managers along Orchard Street and the Post Road corridor of Cos Cob, with per-unit NFPA 211 documentation, off-season scheduling, and a single invoice per building.
Cleaner Air In Your Cos Cob Home. Documented With Photos.
NADCA Source-Removal Cleaning, Coil Treatment, And Before-And-After Verification Photos On Every Job Across Cos Cob And The Greenwich Service Area.
Why Choose Us In Cos Cob
NADCA ACR source-removal cleaning, HEPA-filtered collection, EPA-registered coil treatment, and on-camera before-and-after verification on every Cos Cob air duct job, calibrated for Cos Cob Harbor V-zone salt air and Mianus River tidal humidity.
NADCA ACR Source-Removal
Every supply and return duct scrubbed under negative pressure with rotary brushes, never compressed-air-only shortcuts.
HEPA-Filtered Negative Air
Truck-mounted HEPA collection captures 99.97% of loosened debris at the main trunk instead of blowing it into your home.
Before And After Verification
Inspection camera footage inside every duct branch and the air handler, delivered as a digital file for your records.
EPA Antimicrobial Coil Treatment
Every cleaning closes with EPA-registered antimicrobial on the evaporator coil, critical in Cos Cob Harbor V-zone salt-air loading.
What Dirty Ductwork Costs Your Cos Cob Home
Most Cos Cob homeowners don't think about ductwork until allergies flare, energy bills climb, or musty harbor air starts blowing through the registers. Cos Cob Harbor V-zone salt air, Mianus River tidal humidity, and Bush-Holley Historic District retrofits make buildup compound fast.
Salt-Air Coil Corrosion And Mold
Cos Cob Harbor V-Zone Loading
Cos Cob Harbor V-zone homes pull brackish, salt-laden air through every return. Salt deposits and condensation seed coil corrosion and Cladosporium colonies inside evaporator fins within a single cooling season.
Historic Galvanized Trunk Buildup
Bush-Holley 1730s Retrofit Stock
Bush-Holley Historic District colonials carry register-and-trunk retrofits cut into 1730s timber and lath cavities. Galvanized sheet metal trunks accumulate decades of register dust, ash, and lath debris with no reachable cleanout port.
Reduced HVAC Efficiency
Tidal Humidity, Higher Bills, Shorter Life
Mianus River tidal AE-zone humidity forces Cos Cob HVAC systems to dehumidify harder. A clogged duct system drives utility bills up 15 to 25% and cuts equipment life roughly in half across a 10-year run.
Backcountry Rodent Intrusion
Bible Street Ridge And Cognewaugh Road
Bible Street ridge and Cognewaugh Road backcountry estates back to wooded watershed and stone-wall corridors. Mice, chipmunks, and squirrels enter attic supply trunks seasonally, dry their droppings, and aerosolize them into every bedroom.
Mill Conversion Post-Renovation Debris
Strickland Road Industrial Loft Stock
Restored Strickland Road mill conversions inherited oversized industrial ductwork from their factory era. Renovation drywall dust, joint compound, and grout slurry settle into seam pockets and blow into living space for months after the contractor leaves.
Dryer Vent Fire Hazard
Long-Run Vents In Art-Colony Victorians
The 1900s Cos Cob art-colony Victorians on River Road and Orchard Street carry long-run rooftop dryer vents through three-story turret cavities. Clogged vents cause roughly 2,900 US home fires annually per the US Fire Administration.

Why Cos Cob Homes Need Professional Air Duct Cleaning
Cos Cob Harbor V-zone salt air, Mianus River tidal AE-zone humidity, 1730s Bush-Holley colonial retrofits, and 1900s art-colony Victorian galvanized stock create duct conditions that surface cleaning cannot resolve. NADCA source-removal with coil treatment is the only complete reset.

NADCA ACR Standard Source-Removal Cleaning
Our Cos Cob crews follow the National Air Duct Cleaners Association ACR-2021 standard for source-removal, not surface-blow. Every duct branch from Bush-Holley Historic District retrofits to Strickland Road mill conversions is scrubbed under negative pressure with rotary brushes and HEPA collection.
Full HVAC System Coverage, Not Just Registers
Most Cos Cob air duct calls start because a competitor only cleaned the visible register boots in a Lower Cos Cob colonial. We clean the supply trunk, return trunk, air handler, evaporator coil, blower compartment, and dryer vent so the full system is decontaminated, not just the first six inches.
Coil Treatment And Antimicrobial Fogging
Every cleaning closes with EPA-registered antimicrobial treatment on the evaporator coil and inside the air handler. This is critical for Cos Cob Harbor V-zone waterfront homes where salt air condenses on coils and seeds mold colonies within weeks if untreated.
Before-And-After Verification Photos
Every Cos Cob air duct job closes with before-and-after photos inside every accessed duct branch and the air handler. Owners on Bible Street ridge and Cognewaugh Road backcountry see exactly what we removed, and the file becomes part of the home record for any future sale.
Why We Don't Offer $69 Air Duct Cleaning In Cos Cob
You've seen the ads. “Whole-house air duct cleaning, $69!” Those offers are bait-and-switch operations, and the number on the ad is not the number on the invoice. The $69 gets a technician in your door with a shop-vac and a compressor hose. Once inside, “required” add-ons push the bill to $900 or more, for work that isn't actually to NADCA ACR-2021 standard.
What Happens On A $69 Job
- Shop-vac and compressor, no negative-air containment
- Mold "treatment" pressure-sell, $300+
- Coil cleaning suddenly $250 extra
- Sanitizer fogging pitched as "required," $200
- Final bill: $900 to $1,400, no photo verification
What You Pay For With Us
- Nikro HEPA negative-air equipment, not a shop-vac
- NADCA ACR-2021 source-removal on every register
- Before and after photos you keep
- Flat pricing from $1,299, no mid-job add-ons
- IICRC-certified technicians, insured, HIC.0702252
NADCA's own consumer advisory states that any quote under $500 for a full residential system is almost certainly a bait-and-switch. If a Cos Cob homeowner is quoted $69 to $199 for whole-house cleaning, call (203) 951-9125 for an honest, itemized estimate instead.
What We Find In Cos Cob Air Ducts
Cos Cob runs from 1730s Bush-Holley colonials to Cos Cob Harbor waterfront stock, and that salt air and old retrofit ductwork drive real buildup, so every job here is done to the NADCA ACR-2021 source-removal standard with before and after photos.

Dryer Vent, Lint Cleared
In Cos Cob, long rooftop dryer runs through art-colony Victorian turret cavities pack lint out of sight.
A flexible dryer duct slowly fills with lint until airflow is choked off. That restriction makes the dryer run hot and long, and a lint-packed run is a recognized fire hazard. Most homeowners never see it because the buildup sits inside the wall and roof run, out of sight behind the lint trap.
We clear the full run from the lint trap all the way to the exterior cap, working the line with a rotating brush and compressed air so the lint is pulled out rather than packed tighter. We check the transition hose, the wall and roof run, and the exterior flap, then confirm the cap opens freely under real airflow.
With the run cleared end to end, the dryer vents the way it is meant to, drying loads faster and reducing the fire risk a clogged line carries. We confirm airflow at the exterior cap before we leave and walk you through what we found and cleared.
Scenario 1 of 5: Dryer Vent Safety
Our Air Duct Cleaning Process In Cos Cob, CT
From the first call to final walkthrough, every step is documented, insured, and owner-supervised.

Air Duct Cleaning Coverage In Cos Cob, CT
Full service NADCA source-removal duct cleaning, dryer vent service, and indoor air quality treatment for Cos Cob homes and businesses across the Greenwich service area, from Cos Cob Harbor V-zone waterfront to Bible Street ridge backcountry.
Green Restoration provides NADCA ACR-2021 source-removal air duct cleaning in Cos Cob, CT 06807, covering Lower Cos Cob, Bush-Holley Historic District, the Cos Cob Harbor V-zone waterfront, the Mianus River tidal AE corridor, and Bible Street ridge and Cognewaugh Road backcountry. Our certified technicians arrive with HEPA-filtered rotary brush systems, negative-air collection, and EPA-registered antimicrobial treatment, with Cos Cob bookings completed in a single visit and documented with before-and-after photos.
As a locally operated Greenwich service-area provider, we understand the HVAC realities Cos Cob properties face, including Cos Cob Harbor V-zone salt air seeding coil corrosion, Mianus River tidal humidity loading evaporator coils, galvanized retrofit trunks inside 1730s Bush-Holley colonials, 1850s Italianate harbor village stock, 1900s Cos Cob art-colony Victorian register pockets, restored Strickland Road mill conversion industrial ductwork, and seasonal rodent intrusion into Bible Street ridge backcountry attics. Our crews handle residential HVAC, commercial rooftop units, dryer vent cleaning, and post-construction duct resets in one visit.
Need Duct Cleaning In Cos Cob?
Schedule your inspection, 24/7 booking.
(203) 951-9125NADCA Standards · Licensed & Insured · HIC.0702252
All Towns Served By Green Restoration Across The Greenwich Silo (Greenwich, Old Greenwich, Riverside, Byram) Plus FC HQ Neighbors Stamford And Darien For NADCA Air Duct Cleaning, Dryer Vent Service & Indoor Air Quality Treatment.
NADCA Air Duct Cleaning In Cos Cob, CT
Our crews follow NADCA ACR-2021 source-removal standard, dispatched out of the Greenwich service area, and booked for Cos Cob appointments within the same week. Every visit includes a full HVAC inspection, source-removal cleaning, coil treatment, and before-and-after verification photos.
Residential & commercial HVAC systems cleaned across the Greenwich service area and Fairfield County since 2014, from Lower Cos Cob colonials to Cos Cob Harbor V-zone waterfront cottages on Sound Shore Drive and restored Strickland Road mill conversions.
Every cleaning follows the NADCA ACR source-removal standard with rotary brush agitation, HEPA-filtered negative air collection, and EPA-registered coil treatment, calibrated for 1730s Bush-Holley plaster cavities and 1900s art-colony Victorian galvanized retrofits.
Every Cos Cob job closes with before-and-after verification photos inside every duct branch and the air handler, delivered as a digital file for your home records or future home sale across Bush-Holley Historic District and the Mianus River tidal corridor.
Connecticut Home Improvement Contractor license HIC.0702252 on every invoice. Direct insurance submission with IICRC S520 documentation when ductwork contamination ties to a covered water loss. We are not licensed public adjusters and do not negotiate claims on your behalf.

About Green Restoration In Cos Cob, CT

Your Cos Cob Air Duct Cleaning Specialists Since 2014
Green Restoration provides NADCA ACR-2021 source-removal HVAC duct cleaning, dryer vent service, coil treatment, and indoor air quality testing for homes and businesses in Cos Cob, CT 06807. Our process uses rotary brush source-removal under negative pressure to fully decontaminate supply trunks, returns, air handlers, and register boots across 1730s Bush-Holley Historic District colonials, 1850s Italianate harbor village stock, 1900s Cos Cob art-colony Victorians, 1950s ranch retrofits, and restored Strickland Road mill conversions. Every job closes with antimicrobial coil treatment and documented photos so you see the actual result.
“After more than 35 years in this industry, every Cos Cob air duct job still gets my direct oversight. We run the NADCA ACR-2021 source-removal standard on every register and air handler and document each step with before-and-after photos. That is why families across Cos Cob and Fairfield County keep trusting us. Your home is in good hands.”
Trusted by Families in Cos Cob &
Fairfield County
5.0 out of 5, Rated by your neighbors on Google
We discovered mold when removing our pellet stove and called Green Restoration for help. David was very communicative and helpful throughout the entire process. He did the job thoroughly and professionally. Highly recommended!
David Woolner
Mold RemediationI had a fantastic experience with Green Restoration. From start to finish, the team was professional, thorough, and extremely knowledgeable. David came for the initial inspection and took the time to explain the entire process.
Annmarie Gieparda
Mold RemediationWe had mold due to a water leak in our half finished basement. David and his crew did a great job, we were very satisfied. I would highly recommend Green Restoration to anyone.
Tanya
Water DamageI needed my entire condo completely cleaned after a soot blow back. Green Restoration was top shelf! So thorough and professional. Thank you so much!
Jacki Hornish
Fire & Soot CleanupAir Duct Cleaning Cost In Cos Cob, CT
Instant estimate for HVAC duct cleaning, dryer vent service, coil treatment, and indoor air quality testing in Cos Cob 06807 and the Greenwich service area. Transparent pricing, no hidden fees.
Single HVAC Home
$1,299 to $2,000
per HVAC unit, NADCA ACR-2021 source-removal
Multi-Zone Home
$2,500 to $4,000
2+ HVAC systems
Commercial
$2,500 to $6,000
includes kitchen exhaust
Price drivers include total linear feet of ductwork, number of supply and return registers, HVAC system age and accessibility, and whether dryer vent cleaning is included (we include it free). All pricing aligns with NADCA ACR-2021 published ranges for proper source-removal cleaning.
See Your Own Cos Cob Estimate In 60 Seconds
How This Estimate Works
This tool gives you a planning figure built from typical jobs. It is not a quote and it is not a flat rate. Your price is confirmed in writing after we see the system.
- What moves it: the number of systems, how the equipment is reached, the condition of the ductwork, and whether access panels have to be cut.
- Work following fire, smoke, water, mold or sewage is scoped separately. It carries added filtration, containment and consumables, and it prices above the ranges shown.
- The written quote is the price. Nothing is scheduled or charged until you approve it.
Air Duct Cleaning FAQs
Clear, honest answers about NADCA cleaning, HVAC system service, dryer vent safety, and indoor air quality in Cos Cob, CT.
Air duct cleaning in Cos Cob starts at $1,299 to $2,000 per HVAC unit for a single-zone system following NADCA ACR-2021 source-removal standard. Multi-zone homes with 2+ HVAC systems run $2,500 to $4,000, and commercial spaces with kitchen exhaust included run $2,500 to $6,000. Dryer vent cleaning is free when bundled with air duct cleaning. Standalone dryer vent service starts at $249. Pricing depends on system size, duct length, accessibility, and whether mold remediation or antimicrobial treatment is needed. We provide a written estimate before any work begins.
Most single-zone Cos Cob HVAC cleaning takes 3 to 4 hours. Historic 1730s Bush-Holley colonials with retrofit registers, 1900s art-colony Victorians on River Road and Orchard Street, and restored Strickland Road mill conversions with oversized industrial trunks can run 5 to 7 hours. Dryer vent cleaning typically finishes under an hour when added on. The full cleaning is always completed in one visit.
NADCA recommends every 3 to 5 years for most homes, but Cos Cob Harbor V-zone waterfront properties and Mianus River tidal AE-zone homes often benefit from a 3-year cycle because brackish salt-air loading and tidal humidity accelerate coil and trunk contamination. Bible Street ridge backcountry estates with seasonal rodent pressure should plan a 3-year cycle too. Dryer vents should be cleaned annually to suppress fire risk.
Air duct cleaning is generally a maintenance expense not covered by insurance, but HVAC mold remediation following a covered water loss (such as a burst pipe or tidal flood event in the Mianus River AE corridor) is typically covered. When Cos Cob ductwork contamination ties to a covered event, Green Restoration submits IICRC S520 documentation directly to your insurer. We are not licensed public adjusters and do not negotiate claims on your behalf. Otherwise, we offer financing for scheduled maintenance cleanings.
We use NADCA ACR-2021 source-removal equipment with rotary brushes inside every duct branch, combined with HEPA-filtered negative-air collection at the main trunk. Compressed-air-only methods (also called air-whip or air-sweep) are cheaper but leave debris behind, which fails on inspection-camera pullback inside Bush-Holley Historic District retrofits or Strickland Road mill conversion industrial trunks. Source-removal is the only method that consistently passes post-cleaning verification.
Professional duct cleaning reduces airborne particulates, dust mites, pet dander, pollen, and mold spores that recirculate through HVAC systems in Cos Cob homes. The EPA and ASHRAE both recognize HVAC cleaning as part of overall indoor air quality improvement, especially when paired with MERV-13 filtration and source control. For Cos Cob Harbor V-zone homes where salt air drives coil mold, antimicrobial coil treatment is what makes the cleaning hold between visits.
Full dryer vent cleaning includes lint removal from the dryer drum housing, the flex duct between dryer and wall, the full rigid run through the home or crawl space, and the exterior vent cap. Long-run rooftop vents through three-story turret cavities in 1900s Cos Cob art-colony Victorians require specialized rotary rod systems we carry on every truck. Standalone dryer vent cleaning starts at $249 and takes under an hour. Bundle it with HVAC duct cleaning and the dryer vent service is free.
Green Restoration follows the NADCA ACR-2021 source-removal standard and is equipped for the HVAC realities Cos Cob properties face, from 1730s Bush-Holley historic colonial retrofits and 1850s Italianate harbor village stock to Cos Cob Harbor V-zone salt-air coil corrosion and restored Strickland Road mill conversion industrial ductwork. We use HEPA-filtered collection, rotary brush agitation, and EPA-registered coil treatment on every job. Before-and-after verification photos, HIC.0702252, and 24/7 scheduling at (203) 951-9125 mean your air is cleaner and documented.
More Green Restoration Services in Cos Cob
The same local Green Restoration team covers all of these across Cos Cob. One number for every emergency and every cleanup.




