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

If you’re looking to get new windows, our list of the best window installation companies can help.

We analyzed all the top-rated window companies in Greenwich 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 review of the best window installation companies in Greenwich may not seem like the most interesting article on EcoWatch, but trust us, windows have more of an impact on your life than you might realize. The Department of Energy estimates that heat gained or lost through outdated or drafty windows could make up close to 30% of heating and cooling usage. In Greenwich, where the energy bills are an average of $38 per month, that’s almost $$136 per year wasted.

Luckily, saving you money with more efficient windows also helps our goals of conserving energy and the resources it takes to generate it.

Unlike other review sites, EcoWatch ranks window replacement companies on energy efficiency while also balancing cost, customer satisfaction and service area.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Greenwich

The EcoWatch Reviews team assessed several window installation companies across Greenwich to narrow our list down to the best ones. The providers in this article scored best in our categories, which include energy-efficient offerings, price, customer service, availability and more.

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 provides the best availability in Greenwich. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window installation business for about 27 years.

You may want to consider opting for Andersen if you're looking for a company 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

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. Not all of Andersen’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Greenwich?

Andersen does not detail prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more detailed information on pricing, you can ask for a quote from the company.

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 provides windows expertise in Greenwich. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window installation business for about 27 years.

You may want to consider opting for Window World if you're looking for a company 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

Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Window World cost in Greenwich?

Window World does not detail prices on its website, but it's known for offering some of the most affordable window installations around. For more detailed information on pricing, you can ask for a 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 provides the best residential windows in Greenwich. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has been in the window installation business for about 16 years.

You may want to consider opting for Window Nation if you're looking for a company 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

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. Not all of Window Nation’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Window Nation cost in Greenwich?

Window Nation does not detail prices on its website, but 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. For more detailed information on pricing, you can ask for a 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 provides the best window installation for businesses in Greenwich. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. Aeroseal has been in the window installation business for about 23 years.

You may want to consider opting for Aeroseal if you're looking for a company that installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

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. Not all of Aeroseal’s offerings are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.

How much does Aeroseal Windows cost in Greenwich?

Aeroseal does not detail prices on its website, but it provides high-quality windows at a competitive price point. For more detailed information on pricing, you can ask for a quote from the company.

We aim to be unbiased and transparent by listing pros and cons for every provider. Additionally, any partnerships do not affect our reviews.

More Window Companies in Greenwich

Renewal by Andersen

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

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Storm Doors
  • Service icon Skylights
  • Service icon Bay Windows
  • Service icon Andersen
  • Service icon Glass Doors
  • Service icon Window Install & Replacement
  • Service icon Commercial Windows

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 Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Bay Windows
  • Service icon Double-Hung
  • Service icon Window Install & Replacement
  • Service icon Sliding 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 Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Aluminum Frames
  • Service icon Window Install & Replacement
  • Service icon Window Repair

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 Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Bay Windows
  • Service icon Window Install & Replacement

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

Westchester Window

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

Services Offered

  • Service icon Window Repair
  • Service icon Wood Frames
  • Service icon Aluminum Frames
  • Service icon Window Install & Replacement
  • Service icon Energy-Efficient Options

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

Windows By Toll

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

Services Offered

  • Service icon Double-Hung
  • Service icon Bay Windows
  • Service icon Window Install & Replacement
  • Service icon Window Repair
  • Service icon Andersen
  • Service icon Dormer Windows
  • Service icon Glass Showers
  • Service icon Marvin

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

American Windows Plus Inc

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

Services Offered

  • Service icon Wood Frames
  • Service icon Vinyl Frames
  • Service icon Window Install & Replacement
  • Service icon Fiberglass Frames
  • Service icon Pella
  • Service icon Energy-Efficient Options
  • Service icon Window Repair
  • Service icon Glass Doors
  • Service icon Sliding Glass Doors
  • Service icon Marvin
  • Service icon Commercial Windows
  • Service icon Andersen
  • Service icon Aluminum Frames

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

Pella Windows & Doors of Norwalk

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

Services Offered

  • Service icon Double-Hung
  • Service icon Commercial Windows
  • Service icon Glass Doors
  • Service icon Window Repair
  • Service icon Pella
  • Service icon Sliding Glass Doors
  • Service icon Window Install & Replacement
  • Service icon Bay Windows
  • Service icon Storm Doors
  • Service icon Fiberglass Frames

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

Artan Window Works | Window Repair

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

Services Offered

  • Service icon Aluminum Frames
  • Service icon Screen Repair
  • Service icon Window Install & Replacement
  • Service icon Wood Frames
  • Service icon Window Repair

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

Authentic Window Design

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

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Marvin

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

Sears Window Replacement

New Rochelle, NY
3.6
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Good Customer Service

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Bay Windows
  • Service icon Alside
  • Service icon Window Repair
  • Service icon Vinyl Frames
  • Service icon Storm Windows
  • Service icon Window Install & Replacement
  • Service icon Double-Hung

Website: https://www.searshomeservices.com/locations/hi/window-replacement/ny/newrochelle
Address: 5 Plain Ave, New Rochelle, NY 10801
Phone: (914) 243-1427

M & R Windows

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

Services Offered

  • Service icon Window Repair
  • Service icon Window Install & Replacement

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

First Choice Windows & Remodeling

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

Services Offered

  • Service icon Marvin
  • Service icon Window Install & Replacement
  • Service icon Pella

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

Aesthetic Renovations

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

Services Offered

  • Service icon Window Repair
  • Service icon Window Install & Replacement

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

Unified Home Remodeling

Scarsdale, NY
3.0
★★★★★
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Dormer Windows
  • Service icon Storm Doors
  • Service icon Pella
  • Service icon Window Install & Replacement
  • Service icon Window Repair
  • Service icon Andersen

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

Nelson Glass & Mirror

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

Services Offered

  • Service icon Tempered Glass
  • Service icon Mirrors
  • Service icon Window Repair
  • Service icon Aluminum Frames
  • Service icon Storm Windows
  • Service icon Commercial Windows
  • Service icon Screen Repair
  • Service icon Window Install & Replacement
  • Service icon Glass Showers

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

Connecticut Glass & Mirror

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

Services Offered

  • Service icon Commercial Windows
  • Service icon Sliding Glass Doors
  • Service icon Skylights
  • Service icon Mirrors
  • Service icon Window Install & Replacement
  • Service icon Glass Showers

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

Croton Home Center

Ossining, NY
4.2
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Skylights
  • Service icon Aluminum Frames

Website: http://www.crotonhomecenter.com/
Address: 77 Water St, Ossining, NY 10562
Phone: (914) 762-4900

Wiser Home Remodeling

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

Services Offered

  • Service icon Andersen
  • Service icon Window Install & Replacement
  • Service icon Marvin

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

Window King LLC

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

Services Offered

  • Service icon Aluminum Frames
  • Service icon Vinyl Frames
  • Service icon Sliding Glass Doors
  • Service icon OKNA
  • Service icon Window Install & Replacement
  • Service icon Commercial Windows

Website: https://www.windowking.biz/
Address: 1075 Morris Park Ave, Bronx, NY 10461
Phone: (718) 792-5989
Greenwich Window Cost Calculator

Calculate how much you can expect to pay for window installation and replacement in Greenwich, 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 Greenwich Saves You Money

Energy-efficient windows can benefit you in several ways. Here are some reasons you may want to think about making the switch:

  • Protect your investment: When you have an older home, your windows could also be outdated or leaky. Upgrading and repairing your windows is an important part of maintaining your property and its real estate value.
  • Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.
  • Save money on energy bills: Since energy-efficient windows decrease the amount of energy used to heat or cool your home, they can help you save about $441 annually on your energy bills in Greenwich.
  • Reduce your carbon footprint: In Greenwich, you can lower your indirect greenhouse gas emissions by about 147 pounds per year when you switch to energy-efficient windows.

Estimated Cost of Window Replacement in Greenwich

Windows come in different shapes, purposes and styles, so costs and services will differ greatly based on several factors. Below, we describe the average cost and services that you’ll find from window replacement companies.

How Much Do New Windows Cost?

Generally, homeowners in Greenwich can anticipate that most replacement window installations will range from $250 to $1,200, with the most common installations sitting at around $600. This is due to the fact that the cost of window installations are based on a variety of factors specific to your home, like the size, material and number of windows you need to replace, as well as the location of your property.

It’s important to remember that windows with the best efficiency may cost more initially but can save you hundreds of dollars by decreasing your energy bills. Investing in certified energy-efficient windows can save Greenwich homeowners $441+ a year when replacing single-pane windows.

Requesting free quotes from several providers is the best way to find out which one will work best for your budget.

What Services do Window Installers Offer?

Generally, there are two types of window replacement services companies offer: full-frame and pocket installations.

A full-frame installation replaces the complete window, including the windowsill, frame, trim and the window panes. Because this kind of installation requires more time, it will be more expensive than a pocket installation. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are simpler and will be less expensive, but you can’t do this type of installment if you have any pre-existing rot or water damage.

Your window replacement company should be able to help you understand what’s best for your needs. In Greenwich, the decision will mostly depend on how old your home is and if there’s any damage. Wood can decay if it’s not properly maintained over the years, so it’s a good idea to have a professional evaluate your frames and window sills.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Greenwich

EcoWatch reviews differ from other reviews, as we evaluate these companies through a sustainability lens. Along with energy efficiency, we evaluated several window installers in Greenwich and ranked them using the following methodology:

Service Area

Since this is a guide for Greenwich, we gave more points to companies that serve the city. There are other reputable providers that didn’t make the list because they wouldn’t be able to serve homeowners in Greenwich.

Work Quality

We’re certain that you’re looking for a company to do a great job installing windows. We’ve vetted each company featured in our guide to make sure its technicians are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.

Customer Reviews

We analyzed trends in recent customer feedback to find the companies with the most consistent customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across most other categories, including quality of installation, professionalism, warranty, cost, quality of parts and more.

Cost

Cheaper windows certainly don’t mean better windows, but we know many of our readers try to keep costs low when possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.

Warranty

Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Due to Greenwich’s climate, homeowners will want to mitigate rot, low efficiency and water damage. We factored in local experience to reflect the ability of Greenwich window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.

Greenwich, CT Window Replacement FAQs

What is the typical cost to replace windows in a home?

The average cost to replace one window can range between $450 and $650. There are a variety of factors that affect how much it costs, which include your property’s location, styles and sizes of windows, the number of windows, how energy-efficient the windows are, the materials used in designing the windows and local labor costs.

What are the types of windows?

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

What services do window replacement companies provide?

Window installation professionals travel to your home to remove your old windows and replace them with new ones. Some companies install products sold by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is finished.

What time of year should I replace my windows?

While you can install windows any time of year, warmer weather is often better for replacing windows. In addition, it shouldn’t be raining, since rain can make the installation more difficult.

How often do you need to replace your windows?

Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, 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.

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