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TRUSTED BY COS COB, CT HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon161
    Verified window services reviews

Verified Reviews for Window Service pros in Cos Cob, CT

*The Angi rating for Window Service companies in Cos Cob, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.

*The HomeAdvisor rating for Window Service companies in Cos Cob, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Window Service needs.

Last update on November 17, 2025

Find Window pros in Cos Cob

Avatar for Thermo Seal Windows Siding & Roofing
Thermo Seal Windows Siding & Roofing
4.7(
137
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"Great experience from beginning to end. Aaron the sales and service representative was professional, knowledgeable and attentive. The window quality is excellent. The installation was seamless they were on time and all business. They paid attention to details and the clean up at the end was fantastic. It was a pleasure all around I highly recommend Thermo Seal."
Windows Project
Windows Project
Windows Project
Windows Project
Additional Photos

+29

2 neighbors recently requested a quote
Recommended by99%of homeowners
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Avatar for Power Home Remodeling
Power Home Remodeling
4.7(
379
)

Serving Cos Cob, CT and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Warranties offered

"The guy did an excellent job. I have no complaints. This was our 2nd window project and we really liked the windows we did 6 years ago so finished off the house."
Fresh Curb Appeal
Full Home Remodel - Siding, Windows, and a Roofing system
Fresh Curb Appeal
Full Home Remodel - Siding, Windows, and a Roofing system
Fresh Curb Appeal

+41

44 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Ivis Cleaning Services
Ivis Cleaning Services
5.0(
71
)

Serving Cos Cob, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Offers commercial services

Customers say: Terrific value

"Both the customer service and the window cleaning skills were excellent. The results of the window cleaning made the windows look as good as new and the it feels very good having clean windows to look through. I would highly recommend Ivis Cleaning Services for your window cleaning needs as both there price and service is excellent."
Storefront Detail
Crystal clear
Taco project
Response time5 hrs
Response rate97%
31 neighbors recently requested a quote
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Avatar for Renuity
Renuity
4.4(
35
)

Serving Cos Cob, CT and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Warranties offered

"Installed 22 new windows, 2 entry doors, and new sliding glass door. Outstanding service, price, and installation. Highly recommend."
Entry Door
Doors
Doors
Doors
During Installation

+55

Response time6 hrs
1386 neighbors recently requested a quote
Recommended by69%of homeowners
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Avatar for Guncay Glass & Mirror
Guncay Glass & Mirror
5.0(
25
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Worked with Guncay Glass & Mirror several times with Satisfactory results and professionalism in each project. Well priced and always on time, will keep using them over and over."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+37

Recommended by100%of homeowners
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Windows questions, answered by experts

Windows can crack for various reasons. Common causes include aging glass, physical impact, and temperature stress. A less common reason is pressure changes, which are far less predictable. Pressure changes often happen because of poor window placement.

Costs depend on window size, type, material, and labor. Custom shapes or sizes typically incur higher expenses; full installation includes removing old windows.

Folding window installation costs about $1,600 on average, ranging from $500 to $3,000. The cost factors of this project include the size, the type of folding windows, the number of panels, and the type of glass. Different types of folding windows include:

  • Standard folding window: $200 per linear foot

  • Glazed folding window: $240 per linear foot

  • Standard folding window and swing door: $1,000 per linear foot

  • Folding window and sliding door: $2,000 per linear foot

Installing energy-efficient windows costs between $325 and $2,000, averaging about $400 per window. You’ll have to consider cost factors like the window’s size, frame material, and type. Labor costs in your area will also impact the overall cost of the project, with window installation professionals charging about $40 per hour on average. Different types of energy-efficient windows include:

  • Single-hung: $150–$2,500

  • Casement: $150–$600

  • Double-hung: $250–$3,000

  • Picture: $200–$650

  • Bay: $480–$1,920

Yes, replacing windows can boost your home’s resale value by improving its curb appeal, energy efficiency, and comfort. The return on investment (ROI) varies depending on the types of windows you install, but most homeowners see an ROI of around 60% to 70% of the cost of the window installation, according to the Remodeling 2024 Cost vs. Value Report. 

The Cos Cob, CT homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.

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