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 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 review of the best window installation companies in Greenwich may not seem like the most compelling 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 old or damaged windows could be responsible for nearly 30% of heating and cooling usage. In Greenwich, where the electric bills are an average of $38 per month, that’s almost $$136 per year wasted.

Installing energy-efficient windows on your property can help you save money each month on your power bills — and you can help the environment as well.

Efficient windows are of particular importance in Greenwich, where the temperature varies throughout the year. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $441 each year.

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 Energy-Efficient Features

DaBella

★★★★★
4.0
  • Great warranty
  • Friendly sales representatives
  • Offers good financing options

Best Window Installation & Replacement Companies in Greenwich

The EcoWatch Reviews team examined dozens of installers in Greenwich to find the best window replacement companies for our readers. We assessed the companies on energy-efficient offerings, price, coverage area, customer service, local experience 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 Greenwich. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of experience in the window installation business.

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, Window World may be the provider for you.

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 Greenwich?

Prices are not available on Window World’s website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. For more detailed information on pricing, you can receive a 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 Greenwich. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation business.

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, Andersen may be the provider for you.

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 Greenwich?

Prices are not available on Andersen’s website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, 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 receive 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 has 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 about 23 years of experience in the window installation business.

If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the provider for you.

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 Greenwich?

Prices are not available on Aeroseal’s website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. For more detailed information on pricing, you can receive 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 has 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 about 16 years of experience in the window installation business.

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, Window Nation may be the provider for you.

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 Greenwich?

Prices are not available on Window Nation’s website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, 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 receive a quote from the company.

We’ve recommended installers with shining reputations, but keep in mind these are national companies, so your service may vary depending on your local crew. We have tried to be unbiased and transparent by including pros and cons for every company we reviewed.

More Window Companies in Greenwich

Power Home Remodeling

Melville, NY
4.7
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Transferable lifetime warranties
  • Pros icon Energy-efficient & noise reducing windows
  • Pros icon Over one million projects completed

Services Offered

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

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

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

Services Offered

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

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

Services Offered

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

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 Free Assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon award_winning
  • Pros icon Price Transparency

Services Offered

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

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 Free Assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

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

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

Renewal by Andersen

Stamford, CT
4.7
★★★★★
  • Pros icon award_winning
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Free in-home consultation
  • Pros icon Energy-efficient windows
  • Pros icon Free Assessment
  • Pros icon Saturday availability

Services Offered

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

Window World Westchester

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

Services Offered

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

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

Pella Windows & Doors of Norwalk

Norwalk, CT
4.8
★★★★★
  • Pros icon Free Assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • 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

Authentic Window Design

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

Services Offered

  • Service icon Window Replacement/Installation

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 Good Customer Service
  • Pros icon award_winning
  • Pros icon Free Assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Timely Service

Services Offered

  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Storm/Impact Windows

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 Price Transparency
  • Pros icon Educational resources
  • Pros icon Family-owned & operated
  • Pros icon Timely Service
  • Pros icon Speaks Spanish

Services Offered

  • Service icon Window Replacement/Installation

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 Window Replacement/Installation
  • Service icon Glass Doors

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

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
3.0
★★★★★
  • Pros icon award_winning
  • Pros icon Timely Service
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Free Assessment
  • 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

Croton Home Center

Ossining, NY
4.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Window Replacement/Installation
  • Service icon Skylights

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

Wiser Home Remodeling

New Canaan, CT
2.9
★★★★★
  • 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

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

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 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
  • 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

Window King LLC

Bronx, NY
4.8
★★★★★
  • Pros icon Free in-home consultation
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free Assessment
  • Pros icon Estimate price matching
  • Pros icon Timely Service
  • Pros icon award_winning
  • Pros icon Educational Website
  • Pros icon No-interest financing

Services Offered

  • Service icon Glass Doors
  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Double-Hung
  • Service icon Energy-Efficient Options

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

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

  • Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes tend to have windows that are outdated, leaky or maybe even damaged in some way. Upgrading your windows could help increase the value of your property if you decide to sell.
  • Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out damaging UV rays.
  • Save money on electricity bills: Since energy-efficient windows decrease how much energy you need to heat or cool your home, they can help you save about $441 annually on your energy bills in Greenwich.
  • Reduce your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% after you install Energy Star certified windows. In Greenwich, that’s about 147 pounds per year on average.

Estimated Cost of Window Replacement in Greenwich

Windows come in varying styles, purposes and shapes, so costs and services will differ considerably based on your project. Below, we go over the average cost and services that you’ll find from window installers.

How Much Do New Windows Cost?

On average, 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. How much it will cost is based on several factors, such as material, type, the location of your home, size, number of windows and more.

Whether or not you want energy-efficient windows is another factor that will affect the cost. These will usually cost more than other windows, but on the other hand, you can save about $441 a year on your energy bills in Greenwich.

Something else that influences the overall cost is the material of the frame you pick. Aluminum frames are generally the least expensive 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 offer decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.

What Services do Window Installers Offer?

The first step when planning a window installation is to clarify whether you should get a full-frame or pocket installation.

A full-frame installation replaces the total window, such as the sill, frame, trim and the window panes. As this type of installation requires more time, it will be more expensive than a pocket installation. A pocket installation entails installing a new window without replacing the frame. So, instead of removing the whole window and rebuilding it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.

If you’re not sure which kind of window installation service you should get, your installer can help you out. Typically, the decision depends on factors such as the age and condition of the home, the type of building material, budget and time restrictions.

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 Energy-Efficient Features

DaBella

★★★★★
4.0
  • Great warranty
  • Friendly sales representatives
  • Offers good financing options

How We Choose the Best Window Installers in Greenwich

In our hunt to find the most reliable, eco-friendly window installers in Greenwich, EcoWatch chose the above companies as the best window installation companies in the city. Along with energy efficiency, we analyzed each installer and assigned rankings using the following methodology:

Service Area

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

Work Quality

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

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

Lastly, we like to see companies that have been in the industry for quite some time. Window installation companies that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.

Greenwich, CT Window Replacement FAQs

How much should a window install cost?

The average cost to replace a single window ranges between $450 and $650. There are several factors that influence the cost, which include your property’s location, the number of windows, styles and sizes of windows, the materials used in designing the windows, how energy-efficient the windows are and local labor costs.

What are the different kinds of windows?

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

What services do window installation companies offer?

Window installation professionals visit your home to remove your old windows and replace them with new ones. Some providers install products made by other companies, whereas others install their own windows. The installer will also clean up after the installation.

When is the best time of year to replace windows?

Even though you can install windows any time of year, warmer weather is often better for replacing windows. Additionally, the weather should be dry, since rain can make the installation more difficult.

How often should you replace windows?

Windows typically last around 20 to 30 years, but anytime you notice damage on your windows, it’s a good idea to have them looked at by an expert to see if they are in need of a repair or replacement.