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TRUSTED BY GREENWICH, CT HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon188
    Verified window services reviews

Verified Reviews for Window Service pros in Greenwich, CT

*The Angi rating for Window Service companies in Greenwich, 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 Greenwich, 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 March 16, 2026

Find Window pros in Greenwich

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

Serving Greenwich, CT and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"I'm so happy with my new windows! My only regret is that I don't have more windows to replace! Aaron and his team were a dream to work with - communicative, friendly, and direct. They worked with me to scope out exactly what I wanted and they were very transparent and fair on price. The installation team was efficient and respectful, making sure everything was done to the utmost standards. My windows look amazing but more importantly they work fantastically! I was shocked at how much quieter and cooler my house was after the new windows were installed, and they are so much easier to keep clean. I will be recommending Thermo-Seal to everyone!!"
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 Greenwich, CT and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Warranties offered

"Process was fully explained from start to finish and delivered as promised. High quality windows and attic insulation for an affordable price. Company was very professional and answered all questions. Great warranty. Installed 15 custom windows in one day. Definitely recommend!"
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 Window Genie of Westchester
Window Genie of Westchester
4.8(
16
)

Serving Greenwich, CT and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"It was a fantastic experience. Kelly worked efficiently and did a superb job cleaning our windows and screens. We were extremely happy with the process and have already recommended Window Genie to a friend."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

1 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 Greenwich, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Offers commercial services

Customers say: Terrific value

"Clear description of work. Stuck to schedule and did a great job cleaning the windows."
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 Greenwich, 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 Greenwich, 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

Because bay windows are a combination of three windows, there are many options for how wide or tall they can be. That said, individual windows come in standard sizes, and you can use those as a guide for the width and height of your bay window.

The cost of window installation depends on several factors, including the window type, size, and frame material. Labor rates, the need for custom sizing, and any required structural modifications will also influence the final price.

Shatter-resistant glass will ensure that even with a high impact, the glass of your window panes is less likely to break. If you’re looking for a more low-cost way to prevent vandalism, the most traditional answer would be to board up windows with a strong plywood sheet. Adding security cameras is also a surefire way to ward off potential vandalism. 

Most professionals can enlarge a window in five to 10 hours, depending on the window location, the exterior wall material, how easy it is to cut through it, and how much buildback you’ll need after the installation is complete. However, more complex projects can take two to three days from start to finish.

Yes, it is generally better and more cost-effective to replace all your windows at once. Contractors often lower the per-window labor and material costs for larger projects, saving you money in the long run. Installers may also quote a flat rate for overhead, making multiple small jobs more expensive than one large one.

Replacing all windows simultaneously offers other advantages:

  • Aesthetics and Home Value: It creates a cohesive style and uniform energy efficiency, which is appealing to potential home buyers.

  • Efficiency: The entire replacement process, which can take several weeks, is completed in a single, more efficient project.

However, replacing all windows requires a significant upfront investment. While you can replace just a few windows, experts recommend replacing at least five to eight at a time to avoid high overhead costs. An exception is when a single window is damaged; in that case, it can be replaced on its own.

The Greenwich, 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