20 Best Window Companies in Willimantic, CT (2023 Reviews)
When it's time to upgrade your windows, our list of the top window installation companies can help you find the right provider for you.
We analyzed all the top-rated window companies in Willimantic 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
The EcoWatch Reviews team is all about helping Willimantic homeowners make their homes more eco-friendly. According to the Department of Energy, heat gained or lost through outdated, drafty windows could make up 25-30% of heating and cooling costs.
That's bad news for your bank account and the environment, but one of the top window installation companies can help with that.
As windows have such a large impact on your home, picking the best company for you is a big choice to make. That's why the EcoWatch team has made this list of the top window installation companies, so you can more easily make an informed decision.
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 Willimantic
The EcoWatch team assessed dozens of installers across the country to find the best window replacement companies for our readers. The providers in this article scored the best in our review categories, such as energy-efficient offerings, price, availability, customer service, local expertise 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 offers windows expertise in Willimantic. Window World has been in the window business for about 27 years.
You may want to consider picking 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 WindowsWindow World has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. 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 Willimantic?Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. You can request a free quote on its website for more information about pricing.

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 Willimantic. Andersen has over 27 years of industry experience, and it currently provides services to nearly every state except Mississippi and West Virginia. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
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, this may be the provider for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Willimantic?Andersen does not outline 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. You can request a free quote on its website for more information about pricing.

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 has the best window installation for businesses in Willimantic. 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 company has been in business since 1999 and currently provides services to 13 states and Washington D.C. The provider has many glowing reviews from customers on online review websites.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThe 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 Willimantic?Though pricing information is not readily available on Aeroseal’s website, it provides high-quality windows at a competitive price point. For more accurate information on pricing, you can get a quote from the company.

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 Willimantic. Window Nation has over 16 years of industry experience, and it currently provides services to residents within 75 miles of its showrooms, which are in 13 states. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
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, this may be the provider for you.
Energy Efficiency of Window Nation WindowsWindow Nation is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so be sure to ask your Window Nation representative when inquiring about services.
How much does Window Nation cost in Willimantic?Window Nation does not outline 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. You can request a free quote on its website for more information about pricing.
We aim to remain unbiased and transparent by listing pros and cons for every installer. Additionally, any partnerships do not influence our rankings.
More Window Companies in Willimantic
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Good Customer Service
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Free assessment
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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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Glass Showers
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Commercial Windows
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Sliding Glass
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Window Replacement
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Residential Windows
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Stained Glass
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Double-Hung
Window World of Hartford
Manchester, CT-
Price Transparency
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Free assessment
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Educational Website
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Timely Service
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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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Sliding Glass
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Custom Window Designs
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Commercial Windows
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Window Replacement
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Fast Delivery
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Window Repair
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Bay Windows
Window Nation
Wallingford, CT-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Custom Window Designs
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Sliding Glass
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Energy-Efficient Options
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Double-Hung
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Window Replacement
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Bay Windows
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Residential Windows
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Stained Glass
Creative Enclosures
Bozrah, CT-
Good Customer Service
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Educational Website
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Free assessment
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Price Transparency
Services Offered
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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
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Fast Delivery
Columbia Glass Inc
Columbia, CT-
Good Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Sliding Glass
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Tempered Glass
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Double-Hung
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Custom Window Designs
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Window Replacement
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Commercial Windows
Christopher Home Improvement
Norwich, CT-
Price Transparency
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Free assessment
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Timely Service
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Good Customer Service
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Educational Website
Services Offered
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
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Window Replacement
United Home Experts of New London County
Norwich, CT-
Price Transparency
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Free assessment
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Good Customer Service
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Educational Website
Services Offered
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Custom Window Designs
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Commercial Windows
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Window Replacement
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Double-Hung
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Residential Windows
Big Dawg Home Improvements
South Windsor, CT-
Price Transparency
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Timely Service
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Good Customer Service
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Free assessment
Services Offered
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Aluminum Window Frames
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Fast Delivery
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Residential Windows
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Bay Windows
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Window Replacement
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Custom Window Designs
Turner Home Improvement Contractors, LLC
Glastonbury, CT-
Price Transparency
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Free assessment
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Good Customer Service
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Timely Service
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Educational Website
Services Offered
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Residential Windows
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Custom Window Designs
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Commercial Windows
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Fast Delivery
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Double-Hung
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Window Replacement
Manchester Millwork
Manchester, CT-
Educational Website
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Good Customer Service
Services Offered
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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
Cussons Sash
Glastonbury, CT-
Educational Website
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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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Commercial Windows
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Residential Windows
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Fast Delivery
Mercury Excelum Inc
East Windsor, CT-
Good Customer Service
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Educational Website
Services Offered
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Residential Windows
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Fast Delivery
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Commercial Windows
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Custom Window Designs
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Window Replacement
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Energy-Efficient Options
Energy Busters LTD
Hartford, CT-
Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Window Replacement
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Residential Windows
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Energy-Efficient Options
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Custom Window Designs
Finestra Windows & Installation
West Hartford, CT-
Educational Website
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Price Transparency
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Free assessment
Services Offered
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Residential Windows
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Glass Showers
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Window Replacement
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Custom Window Designs
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Tempered Glass
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Double-Hung
Nu-Face Home Improvements
Berlin, 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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Residential Windows
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Energy-Efficient Options
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Fast Delivery
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Double-Hung
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Glass Showers
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Custom Window Designs
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Commercial Windows
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Window Replacement
Yargueta Construction
Newington, CT-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
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Timely Service
Services Offered
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Full-Service Installations
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Commercial Windows
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Custom Window Designs
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Residential Windows
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Glass Showers
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Window Replacement
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Double-Hung
United Home Experts of Hartford County
Enfield, CT-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Commercial Windows
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Custom Window Designs
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Window Replacement
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Residential Windows
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Double-Hung
Mainville Windows & Doors
Newington, CT-
Price Transparency
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Free assessment
Services Offered
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Aluminum Window Frames
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Commercial Windows
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Bay Windows
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Residential Windows
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Window Replacement
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Glass Showers
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Custom Window Designs
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Sliding Glass
Peoples Products - HR40 Windows
Newington, CT-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Aluminum Window Frames
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Commercial Windows
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Fast Delivery
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Residential Windows
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Window Replacement
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Custom Window Designs
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Energy-Efficient Options
Marvin
Enfield, CT-
Good Customer Service
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Educational Website
Services Offered
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Window Replacement
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Bay Windows
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Double-Hung
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Custom Window Designs
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Commercial Windows
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Sliding Glass
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Residential Windows
Calculate how much you can expect to pay for window installation and replacement in Willimantic, 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 Willimantic Saves You Money
When you upgrade to energy-efficient windows, you may see a few perks, such as:
- Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
- Protect your investment: If you have a relatively old home, your windows are most likely outdated. Upgrading your windows can improve the insulation in your home and also help raise the value of your home if you decide to sell.
- Better temperature control in your home: Energy-efficient windows can lower how hard your heating system needs to work to heat your home.
- Save on energy bills: Once you upgrade to energy-efficient windows, you can expect a reduction in your bills by about 12% since you'll need less energy to heat or cool your house.
Estimated Cost of Window Replacement in Willimantic
Windows come in different styles, shapes and purposes, so costs and services will vary tremendously based on several factors. Below, we detail the typical cost and services that you'll find from window installation companies.
How Much Do New Windows Cost?
According to our market research, the national average cost of replacing a single window is about $600. However, window replacement costs can range from $200 to $1,200 a window. This is because window installations depend on several factors specific to your home, including the size, material and number of windows you need to install, as well as where your property is located.
Whether or not you want energy-efficient windows is another factor that will influence the cost. These will typically cost more than other windows, but on the other hand, you can save about $457 a year on your energy bills in Willimantic.
Requesting free quotes from several installers is the best way to find out which one will work best for your budget.
What Services do Window Installers Offer?
In general, there are two kinds of window replacement services you can get: full-frame and pocket installations.
A full-frame installation replaces the full window, including the sill, frame, trim and the window panes. Because this kind of installation requires more time, it will cost more than a pocket installation. A pocket installation entails replacing a window within the frame that's already there. So, instead of tearing out the whole unit and rebuilding it, the installer will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window installation company will be able to help you choose what's best for your needs. In Willimantic, the decision will mostly depend on how old your windows are and if there's any moisture damage. Wood can decay if not maintained properly over the years, so it's good to have a professional examine 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 Willimantic
The EcoWatch Reviews team differs from most reviewers because we examine these companies through a sustainability lens. We have evaluated the best window installation companies in Willimantic primarily based on their energy efficient offerings, as it's what's best for the environment and for you as a homeowner. Energy Star certified 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
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find the right window installation company near you.
Work Quality
When picking new windows, the quality and range of services often plays just as important of a role in insulation and performance as the brand of window 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
We analyzed trends in recent online reviews to find the companies with the highest rates of customer satisfaction. Customer satisfaction may be the most important factor, as it indicates the quality of services across nearly every category, including professionalism, quality of installation, quality of parts, warranty, cost and more.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing the prices of providers, we gave higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed previously, windows are a considerable investment, so you'll want to make sure that investment is protected. Window installation companies that provide lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to Willimantic's climate, homeowners will want to mitigate low efficiency, rot and water damage. We factored in local experience to reflect the ability of Willimantic window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Willimantic, CT Window Replacement FAQs
How much does a window install cost?
The national average cost to install one window is about $600 but can range between $200 and $1,200, depending on a few different factors. The price is often influenced by the size of the window, the location of your property and the type and material of the window. Also, keep in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.
What are the types of windows?
There are several different types of windows you can get for your home, such as casement windows, double-hung and single-hung windows, picture windows, transom windows, bay windows, awning windows and slider windows.
Do you really need to use a window installation company?
You should use a window installation professional whenever you want new windows. Installing windows is a complex process that can take a lot of time, so it's best left to the professionals.
How long does it usually take to install windows?
Because a window takes about 30 minutes to install, around 16 windows can be installed in a typical 8-hour work day.