20 Best Window Companies in Stamford, CT (2024 Reviews)

Are you looking to upgrade your windows? Our list of the top window installation companies can help you narrow down which one to choose.

We analyzed all the top-rated window companies in Stamford and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated February 01, 2024

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

A guide on the top window installation companies in Stamford may not seem like the most captivating article on EcoWatch, but trust us, windows have a more direct impact on your life than you might think. If your windows are made of traditional materials, or are outdated or damaged, you could be losing 25-30% of your home’s heat or cool air out of them.

Installing new, efficient windows on your house can help you save money each month on your electricity bills — and you can help the environment as well.

So if you’re building a new home, renovating or replacing your windows in Stamford, you’ve found the best place to get started.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best Window Installation & Replacement Companies in Stamford

The EcoWatch Reviews team assessed dozens of installers across the country to find the top window installation companies for our readers. The installers in this article scored best in our review categories, which include energy-efficient offerings, availability, customer service, local expertise, price and more.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World has windows expertise in Stamford. This company has been in business since 1995 and currently serves 200 locations nationwide. Many positive reviews on customer review websites back the company's reputation.

Window World may be the company for you if you're looking for one that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Window World’s commitment to sustainability can be seen in its energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.

How much does Window World cost in Stamford?

Even though pricing is not available on Window World’s website, it's known for offering some of the most affordable window installations around. The best way to know for sure is to get a free quote from the company.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen has the best availability in Stamford. This company has been in business since 1995 and currently serves nearly every state except Mississippi and West Virginia. Many positive reviews on customer review websites back the company's reputation.

Andersen may be the company for you if you're looking for one that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.

Energy Efficiency of Renewal by Andersen Windows

Renewal by Andersen’s commitment to sustainability can be seen in its energy-efficient window offerings. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.

How much does Renewal by Andersen cost in Stamford?

Even though pricing is not available on Andersen’s website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to know for sure is to get a free quote from the company.

Aeroseal Windows logo
FAST QUOTE
as little as 30 seconds
Best for Businesses

Aeroseal Windows

★★★★★
BBB Rating: A+
Locations: Regional
Founded: 1999
Pros:
  • Pros icon Many years of experience
  • Pros icon Great industry reputation
  • Pros icon Low number of customer complaints
  • Pros icon Manufactures products in-house
  • Pros icon Custom Designs
Cons:
  • Pros icon No lifetime warranty
  • Pros icon Not ideal for residential installations

Aeroseal Windows has the best window installation for businesses in Stamford. This company has been in business since 1999 and currently serves 13 states and Washington D.C. Many positive reviews on customer review websites back the company's reputation.

Aeroseal may be the company for you if you're looking for one that installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

Aeroseal Windows’s commitment to sustainability can be seen in its energy-efficient window offerings. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.

How much does Aeroseal Windows cost in Stamford?

Even though pricing is not available on Aeroseal’s website, it provides high-quality windows at a competitive price point. The best way to know for sure is to get a free quote from the company.

Window Nation logo
FAST QUOTE
as little as 30 seconds
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation has the best residential windows in Stamford. This company has been in business since 2006 and currently serves residents within 75 miles of its showrooms, which are in 13 states. Many positive reviews on customer review websites back the company's reputation.

Window Nation may be the company for you if you're looking for one that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

Window Nation’s commitment to sustainability can be seen in its energy-efficient window offerings. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.

How much does Window Nation cost in Stamford?

Even though pricing is not available on Window Nation’s website, based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. The best way to know for sure is to get a free quote from the company.

We’ve recommended providers with good reputations, but note that some national companies have independently owned locations in Stamford, so your service may differ depending on your local crew. We have tried to stay unbiased and transparent by listing pros and cons for every company reviewed.

More Window Companies in Stamford

Renewal by Andersen

Stamford, CT
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Double-Hung
  • Service icon Skylights
  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors

Website: https://www.renewalbyandersen.com/window-company/710-westchester/retailer
Address: 421 West Ave Building 1, Stamford, CT 06910
Phone: (203) 406-0545

Window World Westchester

Tuckahoe, NY
4.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Glass Doors

Website: https://www.windowworldwestchester.com/
Address: 134 Marbledale Rd, Tuckahoe, NY 10707
Phone: (914) 750-4353

MK Window Treatments

Greenwich, CT
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation

Website: http://www.mkwindowtreatments.com/
Address: 270 Mason St, Greenwich, CT 06830
Phone: (203) 900-1500

Greenwich Windows Replacement

Greenwich, CT
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung

Website: http://www.greenwichwr.com/
Address: 777 West Putnam Avenue, Greenwich, CT 06830
Phone: (203) 424-3446

Windows By Toll

Stamford, CT
4.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Glass Showers
  • Service icon Double-Hung
  • Service icon Bay Windows

Website: https://windowsbytoll.com/
Address: 226 Selleck St, Stamford, CT 06902
Phone: (203) 404-0403

Pella Windows & Doors of Norwalk

Norwalk, CT
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Glass Doors
  • Service icon Bay Windows

Website: https://www.pellabranch.com/hartford/showrooms/norwalk/
Address: 464 Main Ave, Norwalk, CT 06851
Phone: (203) 846-9450

American Windows Plus Inc

White Plains, NY
4.8
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Vinyl Frames
  • Service icon Window Repair
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Metal Frames
  • Service icon Energy-Efficient Options
  • Service icon Wood Frames

Website: https://www.americanwindowsplus.com/
Address: 169 Mamaroneck Ave 2fl # 11, White Plains, NY 10601
Phone: (646) 875-6737

Westchester Window

Thornwood, NY
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Wood Frames
  • Service icon Glass Doors
  • Service icon Energy-Efficient Options

Website: http://www.westchesterwindow.com/
Address: 51 Kensico Rd b, Thornwood, NY 10594
Phone: (914) 310-4421

Aesthetic Renovations

Bedford, NY
3.4
★★★★★
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Repair
  • Service icon Window Replacement/Installation

Website: http://aestheticrenovations.com/
Address: 40 Village Green Box 469, Bedford, NY 10506
Phone: (914) 707-0059

First Choice Windows & Remodeling

Greenwich, CT
3.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Glass Doors
  • Service icon Window Replacement/Installation

Website: http://www.fcwindow.com/
Address: 6 Oak St W, Greenwich, CT 06830
Phone: (203) 987-3131

Klar Studio Custom European Windows & Doors

Norwalk, CT
3.1
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: http://klarstudio.com/
Address: 258 Main Ave, Norwalk, CT 06851
Phone: (203) 496-4307

Artan Window Works | Window Repair

Glen Head, NY
5
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Window Repair
  • Service icon Wood Frames
  • Service icon Metal Frames
  • Service icon Screen Repair
  • Service icon Energy-Efficient Options

Website: https://artanwindowworks.com/
Address: 13 Glen Ln, Glen Head, NY 11545
Phone: (516) 604-5104

Connecticut Glass & Mirror

Stamford, CT
2.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Skylights
  • Service icon Glass Showers
  • Service icon Mirrors

Website: https://www.connecticutglassandmirror.net/
Address: 100 Research Dr, Stamford, CT 06906
Phone: (203) 327-5730

Nelson Glass & Mirror

Port Chester, NY
2.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Mirrors
  • Service icon Energy-Efficient Options
  • Service icon Screen Repair
  • Service icon Storm/Impact Windows
  • Service icon Tempered Glass
  • Service icon Glass Showers
  • Service icon Window Replacement/Installation

Website: http://nelson-glass.com/
Address: 166 N Main St, Port Chester, NY 10573
Phone: (914) 934-1311

Eco Windows and Doors Norwalk CT

Norwalk, CT
2.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Metal Frames
  • Service icon Tempered Glass
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors

Website: https://ecowindowsusa.com/
Address: 270 Main Ave, Norwalk, CT 06851
Phone: (203) 636-0011

Wiser Home Remodeling

New Canaan, CT
2.8
★★★★★
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Double-Hung

Website: https://www.wiserhomeremodeling.com/
Address: 72 Grove St, New Canaan, CT 06840
Phone: (203) 594-7814

Homestead Window Treatments

Huntington Station, NY
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Custom Window Designs

Website: https://homesteadwindowtreatments.com/
Address: 11 Walt Whitman Rd, Huntington Station, NY 11746
Phone: (631) 380-4992

Mr. Handyman of Huntington and Smithtown

East Northport, NY
4.9
★★★★★
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Window Repair

Website: https://www.mrhandyman.com/huntington-smithtown/
Address: 514 Larkfield Rd Suite 8, East Northport, NY 11731
Phone: (631) 257-3213

Authentic Window Design

Yonkers, NY
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Window Replacement/Installation

Website: https://www.authenticwindow.com/
Address: 5 Odell Plaza # 141, Yonkers, NY 10701
Phone: (914) 644-4800

M & R Windows

Bronx, NY
5.0
★★★★★
  • Pros icon Timely Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation

Website: http://mandrwindows.com/
Address: 4510 Bullard Ave, Bronx, NY 10470
Phone: (718) 652-1300
Stamford Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Stamford, CT using our customized window cost calculator.

Estimated Window Cost:
161 homeowners have requested a free estimate in the last 3 days.

Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.

How Installing Energy-Efficient Windows in Stamford Saves You Money

Upgrading to energy-efficient windows can improve the comfort of your home and help you save on power bills. Here are more details about how upgrading your windows could benefit you:

  • Save money on power bills: Once you upgrade to energy-efficient windows, you can expect a reduction in your bills by about 12% since you’ll need less energy to heat or cool your home.
  • Reduce your carbon footprint: In Stamford, you can reduce your indirect greenhouse gas emissions by about 147 pounds per year once you upgrade to energy-efficient windows.
  • Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.
  • Protect your investment: When you have an older home, your windows could also be outdated or drafty. Keeping your windows up to date is an important part of maintaining your property and its real estate value.

Estimated Cost of Window Replacement in Stamford

When researching window installation, each company offers varying services and costs. Let’s take a look at some average costs and services.

How Much Do New Windows Cost?

Even though the national average cost to install a single window is about $600, it can range anywhere from $200 to $1,200. But costs vary considerably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window installers also provide door installations and replacements, which will make your project cost more.

Keep in mind that energy-efficient windows may have a higher price, but Energy Star estimates the upgrade will save you between $101 and $583 per year when replacing single-pane windows and between $27 and $197 per year when installing double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.

Costs will also vary based on the material you want for your window frames. Aluminum frames cost the least. They’re sturdy, light and maintenance-free, but offer poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made using wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames cost the most and are the most in-demand. They’re also aesthetically pleasing and offer decent insulation for your home.

What Services do Window Installers Offer?

Generally, there are two kinds of window installation services companies provide: full-frame and pocket installations.

Full-frame installations involve replacing the whole window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has a great amount of rot or deterioration. Full-frame installations involve more time and labor and will increase overall costs. Pocket installations (or retrofits) entail installing a new window within its existing frame, which makes pocket installations less labor-intensive and costly. However, if the frame has any damage or rot, you will likely need a full-frame installation instead.

If you’re hiring a reputable window installation company, your company can recommend the best type for your project. In Stamford, the choice will mostly be influenced by how much damage there is currently and how old your existing frames are.

Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house
Buy One Window, Get One 40% OFF
Get Estimate

Best Energy-Efficient Features

Champion

★★★★★
4.5
  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty
Buy 2 Windows, Get 2 Free
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

How We Choose the Best Window Installers in Stamford

In our hunt to make your home improvements easier and more eco-friendly in Stamford, the EcoWatch Reviews team examined dozens of companies before landing on these. Along with energy efficiency, we assessed several window installers in Stamford and ranked them using the following methodology:

Service Area

Since this is a guide for Stamford, we only included companies that cover the city. There are certainly reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Stamford.

Work Quality

We’re willing to bet that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each company included in our guide to make sure its technicians are well-qualified and that the company has received tons of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed patterns in recent customer feedback to find the companies with the most customer satisfaction. Customer satisfaction may be the most important factor, as it indicates the quality of services across nearly every category, including quality of installation, quality of parts, warranty, cost, professionalism and more.

Cost

This one is a give-and-take: similar to other services, cheap window installation companies may not provide the most quality service. Still, we want to make sure we’re highlighting companies that offer a variety of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed, windows are a significant investment, so you’ll want to make sure that investment is well protected. Window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Last but not least, we like to see companies that have been in the industry for a while. Window installers that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.

Stamford, CT Window Replacement FAQs

How much should window installation cost?

The typical cost of replacing a single window can range from $450 to $650. There are many factors that influence the cost, such as the number of windows, styles and sizes of windows, how energy-efficient the windows are, the materials used in designing the windows, local labor costs and your property’s location.

What are the most common types of replacement windows?

There are several different types of windows you can get for your home, such as slider windows, transom windows, bay windows, double-hung and single-hung windows, picture windows, casement windows and awning windows.

Can you replace your own windows?

Although you can install your own windows, doing so is time-consuming and requires a lot of experience with home improvement projects. Using a window installation company can help guarantee that the job is done properly and that you won’t have to spend the time and effort to do it yourself.

Should I replace all my windows at once?

If you want to get more efficient windows and save money on your energy bills, replacing all the windows at once is the only way to see a noticeable difference. However, if you have just a few windows that are broken or leaky, you can replace just those.