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 June 24, 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 If your windows are made of traditional materials, or are outdated or damaged, you could be losing 25-30% of your home’s heat or cool air out of them.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.

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Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
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 for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Window Installation & Replacement Companies in Stamford

The EcoWatch Reviews team researched many window providers across Stamford to narrow our list down to the best ones. We assessed the installers on energy-efficient offerings, customer service, coverage area, price, local experience and more.

Window World logo
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. Window World has about 27 years of experience in the window replacement sector. Its reputation is backed by several positive reviews on customer review websites.

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 shows 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?

Although prices are not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. The best way to get more accurate pricing information is to get a free quote from the company.

Renewal by Andersen logo
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. Andersen has about 27 years of experience in the window replacement sector. Its reputation is backed by several positive reviews on customer review websites.

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 shows 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?

Although prices are not readily 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 get more accurate pricing information is to get a free quote from the company.

Aeroseal Windows logo
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. Aeroseal has about 23 years of experience in the window replacement sector. Its reputation is backed by several positive reviews on customer review websites.

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 shows 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?

Although prices are not readily available on Aeroseal’s website, it provides high-quality windows at a competitive price point. The best way to get more accurate pricing information is to get a free quote from the company.

Window Nation logo
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. Window Nation has about 16 years of experience in the window replacement sector. Its reputation is backed by several positive reviews on customer review websites.

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 shows 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?

Although prices are not readily 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 get more accurate pricing information is to get a free quote from the company.

Please note that the following companies are national, meaning the quality of the service may depend on your local team. We have tried to stay unbiased and transparent by describing both pros and cons for each provider.

More Window Companies in Stamford

Renewal by Andersen

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

Services Offered

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

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

Power Home Remodeling

Melville, NY
4.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Price Transparency

Services Offered

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

Website: https://powerhrg.com/
Address: 1660 Walt Whitman Rd #140, Melville, NY 11747
Phone: (631) 339-7268

Greenwich Windows Replacement

Greenwich, CT
5.0
★★★★★
  • 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 Double-Hung

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

United Home Experts

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

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Fiberglass Frames

Website: https://unitedhomeexperts.com/united-home-experts-norwalk-ct-06854-siding-roofing-windows-doors/
Address: 50 Washington St, Norwalk, CT 06854
Phone: (203) 718-0597

MK Window Treatments

Greenwich, CT
4.9
★★★★★
  • 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

Windows By Toll

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

Services Offered

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

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 Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

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

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 Free assessment
  • Pros icon Educational Website

Services Offered

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

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 Good Customer Service

Services Offered

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

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

Klar Studio Custom European Windows & Doors

Norwalk, CT
3.4
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

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

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

Wiser Home Remodeling

New Canaan, CT
3.3
★★★★★
  • Pros icon Price Transparency

Services Offered

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

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

First Choice Windows & Remodeling

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

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

Window World Westchester

Tuckahoe, NY
4.9
★★★★★
  • Pros icon Educational Website
  • Pros icon Financing options available
  • Pros icon Good Customer Service
  • Pros icon Free in-home or virtual consultation
  • Pros icon 3D home visualizer
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

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

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

Aesthetic Renovations

Bedford, NY
3.5
★★★★★
  • Pros icon Good Customer Service

Services Offered

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

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

Unified Home Remodeling

Scarsdale, NY
4.5
★★★★★
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

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

Website: https://www.unifiedhomeremodeling.com/
Address: 757 Central Park Ave, Scarsdale, NY 10583
Phone: (914) 358-9650

Homestead Window Treatments

Huntington Station, NY
4.9
★★★★★
  • Pros icon Family-owned and operated
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Saturday availability
  • Pros icon Good Customer Service
  • Pros icon Online appointment scheduling

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

Connecticut Glass & Mirror

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

Services Offered

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

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 Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

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

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

Mr. Handyman of Huntington and Smithtown

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

Eco Windows and Doors Norwalk CT

Norwalk, CT
2.7
★★★★★
  • 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
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 switching out your windows could help you:

  • Save on energy bills: According to the Department of Energy, heat gained or lost through windows makes up about 25-30% of household energy use. Installing energy-efficient models can help reduce how much you have to pay, therefore saving you about 12% more on your bills.
  • Decrease your carbon footprint: By using less energy once upgrading to energy-efficient windows, you’ll also be reducing your carbon dioxide emissions by about 12%, according to Energy Star.
  • Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
  • Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Updating your windows can improve the insulation in your home and also help raise the value of your house if you decide to sell.

Estimated Cost of Window Replacement in Stamford

Windows come in various shapes, purposes and styles, so costs and services will vary tremendously depending on several factors. Below, we describe the average cost and services that you can get from window installers.

How Much Do New Windows Cost?

The typical cost to replace one window is about $600 but can range anywhere from $200 to $1,200. These estimates vary based on the specifics of your installation, such as number of windows, size, material, the location of your home, type and more.

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

Another factor that affects the total cost is the material you pick for your frame. Aluminum frames are generally the least pricey and are sturdy and light, but they provide poor insulation. On the other hand, wood frames are the most expensive, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.

What Services do Window Installers Offer?

There are generally two types of window installation services: full-frame and pocket installations.

A full-frame installation is a replacement of the full window. It involves taking out the old window, the sill, and the exterior and interior trim. It can also involve extra materials, such as insulation and drip edges, which increase the total cost of the project. It’s also worth noting that it’s not uncommon for homeowners to have to touch up the paint surrounding the window after a full-frame installation. 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 decision will mostly depend on how much damage there is currently and the age of your existing frames.

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Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
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 for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

How We Choose the Best Window Installers in Stamford

EcoWatch is different from other reviewers, as we evaluate these companies through a sustainability lens. We’ve assessed the best window replacement companies in Stamford mainly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows can cut your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

Service Area

Since this is a guide for Stamford, we paid more attention to companies that cover the city. There are certainly other reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Stamford.

Work Quality

When selecting new windows, the quality and breadth of services can often play just as important of a role in overall efficiency and performance as the brand you get. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

Customer feedback is another super important review factor. If the majority of customers don’t have good things to say about their service from a certain installer, it won’t be featured on EcoWatch.

Cost

This one is a give-and-take: as with most services, cheap window installers won’t always provide the highest quality service. Still, we want to make sure we’re highlighting companies that offer a range of price and financing options so they’re accessible to most homeowners.

Warranty

As discussed previously, windows are a serious investment, so you’ll want to be certain that investment is well protected. Window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have a proven track record in the industry. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Stamford, CT Window Replacement FAQs

What is the average cost to install new windows in a home?

The national average cost to install one window is around $600 but can range from $200 to $1,200, depending on a variety of factors. The price is typically influenced by the location of your property, the size of the window and the type and material of the window. Also, bear in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.

What are the most common types of replacement windows?

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

Can you install your own windows?

While it is possible to install your own windows, doing so is time-consuming and requires a lot of handiness. Using a window replacement company can help guarantee that the job is done properly and that you can avoid spending the time and effort of doing it yourself.

How often should you replace your windows?

Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, then they probably need to be replaced. Apart from that, if your windows have any damage on them, or they have become difficult to operate, they may be in need of replacement.

Should I replace all my windows at once?

If you’re upgrading your windows to get more efficient windows, 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.