Certified Air Duct Cleaning Cos Cob, CT - Green Restoration

Certified Air Duct Cleaning Cos Cob, CT

NADCA Source-Removal Cleaning, Coil Treatment & Dryer Vent Service. EPA-Registered Antimicrobials · Licensed & Insured

IICRC Certified badgeIICRC Certified
Owner On Every Job badgeOwner On Every Job
(203) 951-9125

EcoEco-Friendly Solutions For Healthier Spaces

Reviewed by Marvin Riveira · Licensed & Insured In CT · Owner-Operated

5.0★Google Rating7 verified reviews
Same WeekBooking WindowAcross Greenwich Service Area
2,500+Systems CleanedAcross Connecticut
FREEDryer Vent Cleaning$249 Value
Air Duct Cleaning Services

Complete 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.

Before and after NADCA source-removal air duct cleaning of a residential galvanized sheet metal HVAC supply trunk in Cos Cob CT, dust-coated duct walls on the left and clean reflective metal on the right
2,500+Systems Cleaned
Same WeekBooking Window

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.

Renovation resetDrywall flushIAQ certificate

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.

IICRC S520-2024StachybotrysACAC clearance

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.

HEPA H13Negative-air0.3 micron capture

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.

Hantavirus-safeTyvek PPEEntry-point seal

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.

ASHRAE 62.1After-hoursSingle invoice

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.

ASTM D7338Particle countsVOC screening

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.

UV-C in-ductElectrostaticInter-cycle control

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.

AerosealANSI/UL 18140% leak cut

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.

HOA bulkNFPA 211 per-unitOff-season block

Cleaner Air In Your Cos Cob Home. Documented With Photos.

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.

NADCAACR certified

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.

HEPA99.97% capture

Before And After Verification

Inspection camera footage inside every duct branch and the air handler, delivered as a digital file for your records.

100%jobs documented

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.

EPAregistered treatment
Understanding The Risk

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.

Green Restoration technician showing a Cos Cob CT homeowner before-and-after air duct inspection footage on an iPad during a NADCA source-removal cleaning appointment in Bush-Holley Historic District
Local Expertise

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.

Two Green Restoration technicians in N95 respirators removing register screws at a basement HVAC plenum during NADCA source-removal air duct cleaning in a Strickland Road mill conversion Cos Cob CT
1

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.

2

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.

3

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.

4

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.

Consumer Advisory

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 flagged by the BBB and the Connecticut Attorney General. 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.

Common Air Duct Buildup, Cleaned

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.

Flexible dryer duct packed with thick lint buildup, a real fire hazard, before air duct cleaning in a Connecticut home
01/ 05
Dryer Vent Safety
Dryer Vent, Lint Cleared
Local Note

In Cos Cob, long rooftop dryer runs through art-colony Victorian turret cavities pack lint out of sight.

The Situation

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.

How We Handle It

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.

The Result

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.

Full Run ClearedFire-Risk ReducedAirflow Restored
1 / 5

Scenario 1 of 5: Dryer Vent Safety

Our Process

Our Air Duct Cleaning Process In Cos Cob, CT

From the first call to final walkthrough, every step is documented, insured, and owner-supervised.

Green Restoration crew connecting source-removal cleaning equipment to a basement flex duct trunk during NADCA air duct cleaning at a Bush-Holley Historic District colonial Cos Cob CT
01Current Step
5 StepsStart to Finish
100%Owner-Supervised
DirectInsurance Billing
Service Area

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.

Neighborhoods We Serve In Cos Cob
Lower Cos CobBush-Holley Historic DistrictRiver RoadStrickland RoadCos Cob HarborBible Street ridgeCognewaugh Road backcountryOrchard StreetSound Shore DrivePost Road corridorDowntown Cos CobMianus River tidal corridor

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) 951-9125

NADCA Standards · Licensed & Insured · HIC.0702252

Serving Cos Cob (06807) & Nearby Towns

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.

Hours Of Operation
24/7 Emergency ResponseCall Anytime, Day Or NightWater Damage, Mold, Fire, Storms & Sewage Emergencies Dispatched Immediately
Scheduled AppointmentsMonday Through Friday, 8:00 AM, 4:00 PMAir Duct Cleaning, Dryer Vent Service & IAQ Consultations
Local Response

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.

2,500+Systems Cleaned

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.

NADCAACR Standard

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.

PhotosBefore & After

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.

HIC.0702252CT Licensed

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.

Green Restoration technician connecting a HEPA-filtered Nikro negative air machine to basement ductwork during NADCA source-removal air duct cleaning at a Bush-Holley Historic District Cos Cob CT home
About Green Restoration

About Green Restoration In Cos Cob, CT

Local Owner, Fairfield County, CT, Green Restoration

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.

Green Restoration local owner
Green RestorationLocal Owner, Fairfield County, CT
35+ Years Experience

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.

IICRC Certified FirmLicensed & Insured In CTBBB A+ Rated Business
Local Success Stories

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!

DW

David Woolner

Mold Remediation
Verified • October 2025

I 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.

AG

Annmarie Gieparda

Mold Remediation
Verified • March 2025

We 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.

T

Tanya

Water Damage
Verified • February 2025

I needed my entire condo completely cleaned after a soot blow back. Green Restoration was top shelf! So thorough and professional. Thank you so much!

JH

Jacki Hornish

Fire & Soot Cleanup
Verified • September 2025
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Air Duct Cleaning Pricing

Air 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

Most Common

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.

Instant Cost Calculator

See Your Own Cos Cob Estimate In 60 Seconds

Expert Answers

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.

Call (203) 951-9125