Top-rated window pros.

Get matched with top window pros in Cos Cob, CT

Enter your zip and get matched with up to 5 pros

Need a pro for your window service project in Cos Cob, CT?

Select your specific project to find the pro for you.

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
)
New Windows - 6 +New Window - SingleNew Window - Single - For Business+9 more

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

Response time3 days
1 neighbors recently requested a quote
Recommended by99%of homeowners
Request Quote
Avatar for Power Home Remodeling
Power Home Remodeling
4.7(
379
)
New Windows - 6 +New Windows - 3-5New Window - Single+8 more

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

41 neighbors recently requested a quote
Recommended by93%of homeowners
Request Quote
Renewit Window and Glass Repair
4.5(
160
)
Door or Window Screens - Install or RepairWindow Glass - Install or Replace

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1970

Free estimates

Offers commercial services

"We just needed the pane in one window replaced. They came to look at it the same day I called. He measured and ordered the window in less than 10 mins. As he said, 10 days later the window pane arrived. They came and installed the window that day in less than half an hour. The service was great, timely and affordable. I will definitely remember them for any future window replacements."
Response time2 days
39 neighbors recently requested a quote
Recommended by90%of homeowners
Request Quote
Avatar for Ivis Cleaning Services
Ivis Cleaning Services
4.9(
73
)
Window Cleaning

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 time4 hrs
Response rate100%
23 neighbors recently requested a quote
Request Quote
Avatar for Guncay Glass & Mirror
Guncay Glass & Mirror
5.0(
25
)
Window Glass - Install or Replace

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

Response time1 day
Recommended by100%of homeowners
Request Quote
Avatar for Renuity
Renuity
4.3(
36
)
New Windows - 6 +New Windows - 3-5

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
1889 neighbors recently requested a quote
Recommended by66%of homeowners
Request Quote
C A Y Window Cleaners
4.4(
20
)
Window Cleaning

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2001

Free estimates

Credit card accepted

"Carlos was very great to work with. Was flexible with scheduling and did impeccable work. My windows are spotless! He was also able to have the entire interior of the house cleaned. Highly recommend Carlos for both window cleaning and interior cleaning services."
Response time3 days
7 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
...
Showing 1-10 of 713
Windows questions, answered by experts

It’s easy to tell if you have low-E windows. Light a match or grab a pen light and hold it up to your windows. You should see multiple reflections in the window—four for double-pane windows. If one of the reflections is a slightly different color than the other three, you have low-E windows. If you don’t have low-E windows, all the reflections will be the same color.

When it comes to your pocket, opting for energy-efficient windows can lead to an average of 12% in energy bill savings. That totals to yearly energy savings between $100 and $600. However, the exact amount you’ll save hinges on factors like your local climate and the number of windows in your home.

The lifespan of smart windows or smart glass can range from 10 to 50 years, depending on the specific type, brand, and usage. When activated, smart glass is rated to last for about 100,000 hours. Since the windows are not typically on 24/7, this can translate to a lifespan of 20 years or more. Smart window film, a related product, generally has a shorter lifespan of around 10 years.

Having a professional caulk your windows will cost you around $50 to $70 per window (or $1.25 to $4 per linear foot), including labor. However, caulking is one of the easiest DIYs there is, and you’ll save a lot of money by getting the supplies and doing it yourself. You’ll only pay $0.05 to $0.20 per linear foot if you DIY this one. Finally, different types of caulk don’t vary too much in price, with most tubes costing no more than $15 apiece (but typically only $3 to $10) at the most. 

To ensure the longevity and smooth functioning of new windows, regular maintenance is essential. This includes cleaning the glass and frames, inspecting seals for leaks or damage, and reapplying caulking as needed. It is also important to lubricate all moving parts and operating mechanisms to ensure they continue to operate smoothly.

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.

See all articles