29 Best Window Replacement Companies in Groton, CT (Feb 2023)
Window Companies Near Me
When you need to replace your windows, our reviews of the best window installation companies can help you find the right provider for you.
We analyzed all the top window installers in Groton and selected the top 29 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated January 12, 2023
Why you can trust EcoWatch
A review of the top window installation companies in Groton may not seem like the most riveting article on the EcoWatch site, 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 account for around 30% of heating and cooling costs. In Groton, where the energy bills are an average of $36 per month, that's almost $$130 per year wasted.
Installing energy-efficient windows on your property can help you save money every month on your energy bills — and you can help the environment, too.
Because windows have such a big 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 make an informed decision more easily.
Best Affordability
Window World
- Great industry reputation
- Low prices relative to competitors
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Award-winning company
- More expensive than competition
Best for Businesses
Aeroseal Windows
- Custom Designs
- Many years of experience
- Low number of customer complaints
- Not ideal for residential installations
Best Window Replacement Companies in Groton
The EcoWatch team assessed several installers in Groton to find the best ones for our readers. We assessed the installers on energy-efficient offerings, customer service, local experience, price, coverage area and more.

Window World
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Great industry reputation
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Low prices relative to competitors
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Large serice area
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Quality of service will depend on your area
Window World provides windows expertise in Groton. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows industry, and it has proved to be one of the most reputable companies in Groton. The company has plenty of glowing reviews from customers online.
It has established itself as 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 WindowsIts 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 make sure you mention that you want Energy Star windows when inquiring.
How much does Window World cost in Groton?Window World does not outline prices on its website, but 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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Member of US Green Building Council
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Award-winning company
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More expensive than competition
Renewal by Andersen is 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 provider has hundreds of 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 WindowsRenewal by Andersen has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to mention that you want high-quality Energy Star windows when inquiring. 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 Groton?Andersen doesn't have any pricing information displayed 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. If you'd like to know for sure, you can request a quote on the company's website.

Aeroseal Windows
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Custom Designs
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Many years of experience
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Low number of customer complaints
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Not ideal for residential installations
Aeroseal Windows has the best window installation for businesses in Groton. 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 operating since 1999 and currently services 13 states and Washington D.C. The company has a lot of positive reviews from customers online.
You may want to consider choosing Aeroseal if you're looking for a installer that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThere are a wide range of window types that Aeroseal Windows offers, some of which are Energy Star products. 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 Groton?Prices are not available on Aeroseal's website, as the cost of window installment differs based on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. The best way to know for sure is to request a free 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 Groton. This window installation company has been operating since 2006 and currently provides services to residents within 75 miles of its showrooms, which are in 13 states.
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 right company for you.
Energy Efficiency of Window Nation WindowsWindow Nation offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for high-quality Energy Star windows when inquiring. 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 Groton?Window Nation doesn't have any prices displayed 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. Receiving a free quote on its website is the best way to get more accurate pricing information.
We've recommended companies with shining reputations, but bear in mind that some national companies have independently owned locations in Groton, so your service may depend on your local crew. We have tried to remain unbiased and transparent by including pros and cons for each company reviewed.
More Window Replacement Companies in Groton
North Shore Window Inc.
Bridgehampton, NY-
Price Transparency
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Consistent Workmanship
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Excellent Customer Service
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Educational Website
Services Offered
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Residential Windows
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Architectural Glass
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Fast Delivery
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Custom Windows
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Aluminum Window Frames
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Double-Hung
United Glass & Mirror Co
Bozrah, CT-
Excellent Customer Service
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No-Hassle Pricing
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Educational Website
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Award-Winning
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Heavy Glass
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Tempered Glass
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Doors
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Custom Windows
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Business Windows
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Sliding Glass
Mr. Handyman of Norwich, New London and Glastonbury
Norwich, CT-
Price Transparency
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Free Quotes
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Good Customer Service
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Helps Educate Customers
Services Offered
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Custom Windows
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Residential Windows
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Business Windows
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Double-Hung
Clinton Glass
Clinton, CT-
No-Hassle Pricing
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Excellent Customer Service
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Award-Winning
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Helps Educate Customers
Services Offered
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Residential Windows
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Glass Showers
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Fast Delivery
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Custom Windows
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Business Windows
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Sliding Glass
Thomas Garbati Builders, LLC
Waterford, CT-
No-fee Quotes
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Dependable Service
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Award-Winning
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Timely Service
Services Offered
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Custom Window Designs
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Residential Windows
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Double-Hung
Ring's End
Madison, CT-
Excellent Customer Service
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Price Transparency
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No-fee Quotes
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Helps Educate Customers
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Business Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
Henderson Roofing
Westerly, RI-
Locally Recognized for Quality
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No-fee Quotes
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Helps Educate Customers
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Good Customer Service
Services Offered
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Custom Window Designs
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Residential Windows
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Full-Service Installations
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Commercial Windows
Window Wizards
Pawcatuck, CT-
Free Quotes
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Helps Educate Customers
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Excellent Customer Service
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Consistent Workmanship
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Sliding Glass
The Siding Store, Inc
Plainfield, CT-
Price Transparency
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Educational Website
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Consistent Workmanship
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Excellent Customer Service
Services Offered
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Custom Window Designs
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Residential Windows
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Energy-Efficient Options
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Sliding Glass
Handyman Services of CT LLC
Niantic, CT-
Reliable Appointment Windows
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Reliable Service
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Good Customer Service
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Helps Educate Customers
Services Offered
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Custom Window Designs
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Sliding Glass
Glass America
7+ years in business · Westerly, RI-
Locally Recognized for Quality
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Helps Educate Customers
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Arrives on Time
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Free Quotes
Services Offered
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Custom Windows
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Business Windows
Christopher Home Improvement
Norwich, CT-
Good Customer Service
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Consistent Workmanship
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Free Quotes
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Timely Service
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
Wallace Design Center
Southold, NY-
Good Customer Service
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No-fee Quotes
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Consistent Workmanship
Services Offered
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Residential Windows
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
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Sliding Glass
The Roofing Store LLC
Plainfield, CT-
No-fee Quotes
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Price Transparency
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Helps Educate Customers
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Award-Winning
Services Offered
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Custom Windows
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
Expressway Roof Leaks and Siding Repair
East Hampton, NY-
No-Hassle Pricing
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Good Customer Service
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No-fee Quotes
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Dependable Service
Services Offered
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Custom Windows
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Residential Windows
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Full-Service Installations
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Business Windows
Harbor Interiors Inc
Southampton, NY-
Gives to charity
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Price Transparency
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Excellent Customer Service
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Free Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
J&J Rivera Home Improvement and Supply CO
Old Saybrook, CT-
Dependable Service
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No-Hassle Pricing
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Timely Service
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Free Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
Danielson Glass & Mirror
Brooklyn, CT-
Price Transparency
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Good Customer Service
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No-fee Quotes
Services Offered
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Residential Windows
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Glass Showers
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Custom Windows
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Full-Service Installations
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Business Windows
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Sliding Glass
Pane In The Glass
Westerly, RI-
No-fee Quotes
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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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Custom Windows
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Residential Windows
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Commercial Windows
Murphy's Building & Remodeling
Hebron, CT-
Charitable Giving
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Helps Educate Customers
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No-Hassle Pricing
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No-fee Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
ICOR Building & Remodeling
Mystic, CT-
Reliable Service
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Helps Educate Customers
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Timely Service
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Free Quotes
Services Offered
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Custom Windows
Robert E Otto Glass Inc.
Wainscott, NY-
Price Transparency
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No-fee Quotes
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Excellent Customer Service
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Educational Website
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Architectural Glass
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Sliding Glass
Kent County Glass
Coventry, RI-
Price Transparency
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No-fee Quotes
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Excellent Customer Service
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Educational Website
Services Offered
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Doors
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Custom Windows
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Residential Windows
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Business Windows
Columbia Glass Inc
Columbia, CT-
Reliable Service
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No-Hassle Pricing
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Excellent Customer Service
Services Offered
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Tempered Glass
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Custom Windows
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Business Windows
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Double-Hung
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Sliding Glass
Creative Enclosures
Bozrah, CT-
Supports Charities
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No-Hassle Pricing
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Good Customer Service
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Free Quotes
Services Offered
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Custom Windows
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Double-Hung
Glass America
Willimantic, CT-
Educational Website
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No-fee Quotes
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Good Customer Service
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Award-Winning
Services Offered
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Custom Windows
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Business Windows
HAMPTONS CEDAR DESIGN.COM
East Hampton, NY-
Free Quotes
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Educational Website
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Price Transparency
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Excellent Customer Service
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
Pane in the Glass llc.
Portland, CT-
No-fee Quotes
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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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Custom Window Designs
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Tempered Glass
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Double-Hung
Coventry Glass Co
Coventry, RI-
No-fee Quotes
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Reliable Appointment Windows
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Excellent Customer Service
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Price Transparency
Services Offered
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Custom Window Designs
How Installing Energy-Efficient Windows in Groton Saves You Money
By switching to energy-efficient windows, you and your family can enjoy several benefits, including:
- Decrease your carbon footprint: In Groton, you can reduce your indirect greenhouse gas emissions by about 147 pounds per year when you install energy-efficient windows.
- Protect your investment: Upgrading your windows is an important part of maintaining your property and its value, particularly if your home is on the older side.
- Save on power bills: Once you install energy-efficient windows, you can expect a reduction in your bills by about 12% since you'll require less energy to heat or cool your home.
- Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
Estimated Cost of Window Replacement in Groton
Windows come in various purposes, styles and shapes, so costs and services will vary tremendously depending on your project. Below, we go over the average cost and services that you'll find from window installation companies.
How Much Do New Windows Cost?
The typical cost to install a single window is about $600 but can range from $200 to $1,200. This is because of the fact that the cost of window installations are based on a variety of factors specific to your home, such as the size, material and number of windows you need to replace, as well as where your property is located.
It's also worth keeping in mind that energy-efficient windows will usually cost more upfront, but Energy Star estimates that upgrading the windows on your Groton home translates to an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you'll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
We advise getting free quotes from multiple window installers to find the right windows and the company that works best for you.
What Services do Window Installers Offer?
The first step of an installation is to decide whether you should get a full-frame or pocket installation.
Full-frame installations are usually recommended when you want a new style or your window has a lot of rot. With this service, your professionals will replace the complete window, including the frame, sill and trim. 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.
Your window installer can help you figure out which type of installation you should get.
Best Affordability
Window World
- Great industry reputation
- Low prices relative to competitors
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Award-winning company
- More expensive than competition
Best for Businesses
Aeroseal Windows
- Custom Designs
- Many years of experience
- Low number of customer complaints
- Not ideal for residential installations
How We Choose the Best Window Installers in Groton
EcoWatch reviews are different from most reviews since we evaluate these companies through a sustainability lens. Along with energy efficiency, we reviewed each installer and ranked them based on the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installation companies that serve a wide variety of states and cities so you can find a quality window installation company near you.
Work Quality
When choosing new windows, the quality and variety of services often plays just as important of a role in overall efficiency and performance as the type of window you opt for. We do give window installers more points if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don't have positive feedback about their service from a certain installer, it won't be featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installation companies won't always provide the most quality service. On the other hand, we want to ensure we're highlighting companies that offer a wide range of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a considerable investment, so you'll want to make sure that investment is protected. Window installation companies that give you lengthy warranties for products, parts and labor 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 years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Groton, CT Window Replacement FAQs
How much should a window install cost?
The typical cost to install a single window can range between $450 and $650. There are many factors that influence the cost, such as styles and sizes of windows, the materials used in designing the windows, local labor costs, how energy-efficient the windows are, your property's location and the number of windows.
What kind of window is the best for energy efficiency?
Generally, double-pane windows will be more efficient than single-pane windows and windows that do not open are more efficient than windows that do. 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.
When should I use a window installation company?
Unless you have experience with home improvement projects and have the time needed to replace your own windows, we recommend hiring a professional. The window installation process is complex and can take anywhere from four to six hours for a single window. Although it's tempting to try to save some money by doing it yourself, hiring a company is a faster, more efficient and much safer alternative.
How often should you replace windows?
Windows generally have a lifespan of about 20 to 30 years, but anytime you see damage on your windows, it's a good time to have them checked by an expert to determine if they are in need of a repair or replacement.
Should I replace all my windows at the same time?
If you want to get more efficient windows and save money on energy costs, replacing all your windows at the same time is the only way to see a noticeable difference. However, if you have just one or two windows that are broken or leaky, you can replace just those.