20 Best Window Companies in Sterling, CT (2023 Reviews)
If you're looking to upgrade to new windows, our list of the best window installation companies can help.
We analyzed all the top-rated window companies in Sterling and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
A review of the top window installation companies in Sterling may not seem like the most interesting article on the EcoWatch site, but trust us, windows impact your life more than you might realize. If your windows are made of traditional materials, or are outdated or damaged, you could be losing 25-30% of your home's heat or cool air out of them.
Thankfully, helping you save money with upgraded windows also aligns with our goals of reducing energy usage for the environment.
We've put together this list of the top installation companies to help you in your search, so you can not only enjoy brand new windows, but also save money on your energy bills.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Sterling
The EcoWatch Reviews team researched dozens of installers that serve the Sterling area to find the top window installation companies by our standards. The installers we've reviewed in this article scored best in our categories: energy-efficient offerings, availability, customer service, price and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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Quality of service will depend on your area
Window World provides windows expertise in Sterling. Window World has around 27 years of experience in the window replacement industry.
It 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 WindowsWindow World is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Sterling?Prices are not available on Window World’s website since the cost of window replacement differs 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. Getting a free quote on its website is the best way to get more accurate information.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen offers the best availability in Sterling. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been in business since 1995 and currently serves nearly every state except Mississippi and West Virginia. The company has many positive reviews from customers online.
It 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 WindowsThere are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. 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 Sterling?Prices are not available on Andersen’s website since the cost of window replacement differs 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. The best way to get more accurate pricing information is to get a free quote from the company.

Aeroseal Windows
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Many years of experience
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Great industry reputation
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Low number of customer complaints
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Manufactures products in-house
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Custom Designs
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No lifetime warranty
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Not ideal for residential installations
Aeroseal Windows offers the best window installation for businesses in Sterling. 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. This provider has 23 years of experience in the windows industry, and it has become one of the best companies in Sterling. Its reputation is backed by several positive reviews on customer review websites.
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 WindowsAeroseal Windows is an Energy Star partner and has a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in Sterling?Aeroseal does not outline prices on its website, but it provides high-quality windows at a competitive price point. Requesting a free quote on its website is the best way to get more accurate pricing information.

Window Nation
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Award-winning company
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Manufactures products in-house
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Custom designs
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Wide variety of products and services
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Installation not covered by warranty
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Limited service area
Window Nation offers the best residential windows in Sterling. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This company has been in business since 2006 and currently serves residents within 75 miles of its showrooms, which are in 13 states. The company has many positive reviews from customers online.
It gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsThere are a wide variety of window types that Window Nation offers, some of which are Energy Star products. 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 Sterling?Prices are not available on Window Nation’s website since the cost of window replacement differs 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. 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 crew. We have tried to remain unbiased and transparent by describing both pros and cons for each provider.
More Window Companies in Sterling
Renewal by Andersen of Rhode Island
Smithfield, RI-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Sliding Glass
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Custom Window Designs
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Bay Windows
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Full-Service Installations
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Double-Hung
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Window Replacement
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Energy-Efficient Options
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Fast Delivery
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Residential Windows
Window World of Rhode Island
Warwick, RI-
Free assessment
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Custom Window Designs
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Double-Hung
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Bay Windows
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Residential Windows
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Sliding Glass
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Fast Delivery
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Window Replacement
Window Nation
Wallingford, CT-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Stained Glass
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Bay Windows
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Double-Hung
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Sliding Glass
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Residential Windows
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Energy-Efficient Options
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Custom Window Designs
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Window Replacement
Home Services at The Home Depot
Coventry, RI-
Educational Website
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Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Custom Window Designs
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Commercial Windows
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Stained Glass
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Energy-Efficient Options
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Glass Showers
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Residential Windows
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Fast Delivery
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Window Replacement
QSPS Housing Solutions
Johnston, RI-
Educational Website
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Double-Hung
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Fast Delivery
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Glass Showers
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Residential Windows
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Custom Window Designs
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Window Replacement
Christopher Home Improvement
Norwich, CT-
Timely Service
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Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Fast Delivery
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Window Replacement
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Residential Windows
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Commercial Windows
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Custom Window Designs
Rhode Island Remodeling
Cranston, RI-
Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Custom Window Designs
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Energy-Efficient Options
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Window Replacement
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Residential Windows
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Fast Delivery
United Home Experts of New London County
Norwich, CT-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Residential Windows
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Double-Hung
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Commercial Windows
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Window Replacement
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Custom Window Designs
The Window Source RI
Smithfield, RI-
Price Transparency
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Free assessment
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Timely Service
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Educational Website
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Good Customer Service
Services Offered
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Window Replacement
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Double-Hung
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Sliding Glass
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Residential Windows
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Bay Windows
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Energy-Efficient Options
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Custom Window Designs
Creative Enclosures
Bozrah, CT-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Glass Showers
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Fast Delivery
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Custom Window Designs
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Window Replacement
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Residential Windows
Custom Built Window Manufacturing
Warwick, RI-
Good Customer Service
Services Offered
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Window Replacement
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Custom Window Designs
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Energy-Efficient Options
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Fast Delivery
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Glass Showers
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Sliding Glass
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Aluminum Window Frames
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Residential Windows
Krystal Glass & Door Co
Smithfield, RI-
Educational Website
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Good Customer Service
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Free assessment
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Timely Service
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Price Transparency
Services Offered
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Custom Window Designs
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Sliding Glass
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Commercial Windows
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Glass Showers
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Residential Windows
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Aluminum Window Frames
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Double-Hung
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Tempered Glass
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Fast Delivery
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Window Replacement
Henderson Roofing
Westerly, RI-
Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Fast Delivery
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Custom Window Designs
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Commercial Windows
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Glass Showers
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Stained Glass
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Full-Service Installations
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Sliding Glass
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Window Replacement
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Residential Windows
United Better Homes - Roofing, Solar & Windows
Central Falls, RI-
Price Transparency
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Educational Website
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Good Customer Service
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Timely Service
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Free assessment
Services Offered
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Fast Delivery
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Residential Windows
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Sliding Glass
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Custom Window Designs
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Commercial Windows
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Full-Service Installations
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Bay Windows
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Window Replacement
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Double-Hung
Esler Companies
Smithfield, RI-
Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Window Replacement
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Custom Window Designs
Columbia Glass Inc
Columbia, CT-
Good Customer Service
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Price Transparency
Services Offered
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Tempered Glass
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Double-Hung
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Residential Windows
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Sliding Glass
Pella Windows & Doors of Seekonk
Seekonk, MA-
Free assessment
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Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Sliding Glass
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Residential Windows
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Bay Windows
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Commercial Windows
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Custom Window Designs
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Window Replacement
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Double-Hung
Nescor
Cumberland, RI-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Stained Glass
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Fast Delivery
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Window Replacement
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Residential Windows
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Custom Window Designs
N.E. Building & Restoration LLC
Attleboro, MA-
Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Custom Window Designs
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Window Replacement
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Stained Glass
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Fast Delivery
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Commercial Windows
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Residential Windows
Pryde Remodeling
Southbridge, MA-
Free assessment
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Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Residential Windows
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Window Replacement
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Fast Delivery
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Custom Window Designs
Calculate how much you can expect to pay for window installation and replacement in Sterling, CT using our customized window cost calculator.
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 Sterling Saves You Money
Switching to energy-efficient windows can help improve the comfort of your home and help you save on power bills. Here are more ways switching out your windows could benefit you:
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Save on energy bills: Since energy-efficient windows lower how much energy you need to heat or cool your home, the switch can help you save about $457 annually on your energy bills in Sterling.
- Better temperature control in your home: When you reside in a place like Sterling where the winters can get very cold, you usually have to rely on your heater to keep your house warm. Energy-efficient windows can reduce how much heat is lost through your windows when heating your home.
- Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Upgrading your windows can make your home more comfortable and also help raise the value of your house if you decide to sell.
Estimated Cost of Window Replacement in Sterling
Windows come in varying styles, purposes and shapes, so costs and services will vary considerably based on several factors. Below, we go over the typical cost and services that you'll find from window installation companies.
How Much Do New Windows Cost?
The typical cost to replace a single window is about $600 but can range from $200 to $1,200. This is because window installations depend on several factors specific to your home, such as the size, material and number of windows you need to install, as well as where your property is located.
Bear in mind that energy-efficient windows may come at a higher price tag, but Energy Star estimates the upgrade will save you between $101 and $583 a year when installing single-pane windows and between $27 and $197 a year when installing double-pane, clear glass windows. These savings vary depending on your local climate, energy rates and individual home characteristics.
Requesting free quotes from several companies is the best way to figure out which one will work best for your budget.
What Services do Window Installers Offer?
There are generally two types of window replacement services: full-frame and pocket installations.
Full-frame installations entail replacing the full window, including the frame, sill and trim. Full-frame installations are necessary when you want to change the style of your windows or your window has considerable rot. Full-frame installations are more involved and will increase the overall cost. Pocket installations are on the simpler end and won't carry as large a bill because they involve simply replacing the window within its existing frame. But if the frame has any damage or rot, you may need a full-frame installation instead.
Your window replacement company will be able to help you figure out what's best for your needs. In Sterling, the decision will mostly be based on the age of your windows and if there's any damage. Wood can decay if not properly maintained over the years, so it's good to have a professional evaluate your frames and window sills.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Sterling
EcoWatch differs from most reviewers since we're examining these companies through a sustainability lens. We have assessed the best window installers in Sterling mostly based on energy efficiency, 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
Because this is a guide for Sterling, we gave more points to companies that serve the city. There are certainly reputable providers that didn't make the cut because they wouldn't be able to serve homeowners in Sterling.
Work Quality
When installing new windows, the quality and breadth of services often plays just as important of a role in insulation and performance as the type of window you opt for. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent online reviews to determine the companies with the highest rates of customer satisfaction. Customer satisfaction might be the most important factor, as it indicates the quality of services across most other categories, including quality of installation, cost, professionalism, quality of parts, warranty 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
As discussed, windows are a serious investment, so you'll want to make sure that investment is well protected. Window installation companies that provide lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a good track record in the industry. Window installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Sterling, CT Window Replacement FAQs
How much does window installation cost?
The national average cost of installing a window is about $600 but can range between $200 and $1,200, depending on a variety of factors. The price is typically influenced by the type and material of the window, the size of the window and the location of your property. Also, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
Which type of window should I get?
Generally, double-pane windows are more efficient than single-pane windows and windows that do not open are more efficient than windows that do. If you want to be sure you'll get the most energy-efficient windows, look for models with the blue Energy Star certification — this means they're certified energy-efficient by the U.S. Department of Energy.
Do I really have to use a window installation company?
Unless you have experience with home improvement projects and have all of the necessary tools to replace your own windows, we recommend hiring a professional installer. The window installation process is quite involved and can take anywhere from four to six hours for one window. Although it's tempting to try to save money by doing it yourself, hiring a professional is a faster, more efficient and safer alternative.
How often do you need to replace your windows?
Windows usually have a lifespan of about 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 determine if they are in need of a repair or replacement.