20 Best Window Companies in Glastonbury, CT (2023 Reviews)
Looking to improve your house's energy efficiency? The top window replacement companies can help.
We analyzed all the top-rated window companies in Glastonbury 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 best window replacement companies in Glastonbury may not seem like the most interesting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might realize. Traditional, outdated windows could lead to spending more on electricity bills during the winter or summer months.
Luckily, saving you money with efficient windows also helps our goals of reducing energy usage for the environment.
Efficient windows are particularly important in Glastonbury, where the temperature varies throughout the year. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $446 a year.
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 Glastonbury
The EcoWatch team researched many window installation companies across Glastonbury to narrow our list down to the top ones. The installers mentioned in this article scored best in our review categories, such as energy-efficient offerings, availability, customer service, local expertise, 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 is the largest window replacement company in the country, known for its vinyl windows and affordability. This company has been in business since 1995 and currently provides services to 200 locations nationwide. Hundreds of positive reviews on customer review websites back the company's reputation.
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 with 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 Glastonbury?Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can request a quote on the company’s website.

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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been in business since 1995 and currently provides services to nearly every state except Mississippi and West Virginia. Hundreds of positive reviews on customer review websites back the company's reputation.
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 is an Energy Star partner with 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 Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Glastonbury?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. If you’d like more accurate information, you can request a quote on the company’s website.

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 Glastonbury. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. Aeroseal has around 23 years of experience in the windows industry, and it currently provides services to 13 states and Washington D.C.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows 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 Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in Glastonbury?Although pricing information is not readily available on Aeroseal’s website, it provides high-quality windows at a competitive price point. If you’d like more accurate pricing information, you can get a quote on the company’s website.

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 is 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 provides services to residents within 75 miles of its showrooms, which are in 13 states. Hundreds of positive reviews on customer review websites back the company's reputation.
It gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsWindow Nation is an Energy Star partner with 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 Nation representative when inquiring about services.
How much does Window Nation cost in Glastonbury?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. If you’d like more accurate information, you can request a quote on the company’s website.
We've recommended companies with shining reputations, but note that some national companies have independently owned locations in Glastonbury, so your service may differ depending on your local crew. We have tried to be unbiased and transparent by including pros and cons for every company we reviewed.
More Window Companies in Glastonbury
Renewal by Andersen - Southern New England
Windsor Locks, CT-
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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Commercial Windows
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Double-Hung
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Sliding Glass
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Residential Windows
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Stained Glass
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Custom Window Designs
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Glass Showers
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Window Replacement
Window World of Hartford
Manchester, CT-
Free assessment
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Timely Service
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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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Sliding Glass
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Bay Windows
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Commercial Windows
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Fast Delivery
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Double-Hung
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Window Replacement
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Custom Window Designs
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Window Repair
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Residential Windows
Window Nation
Wallingford, CT-
Educational Website
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Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Custom Window Designs
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Stained Glass
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Residential Windows
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Window Replacement
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Sliding Glass
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Double-Hung
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Bay Windows
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Energy-Efficient Options
Turner Home Improvement Contractors, LLC
Glastonbury, CT-
Price Transparency
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Educational Website
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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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Commercial Windows
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Double-Hung
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Window Replacement
Big Dawg Home Improvements
South Windsor, CT-
Timely Service
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Free assessment
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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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Window Replacement
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Aluminum Window Frames
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Custom Window Designs
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Bay Windows
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Residential Windows
Finestra Windows & Installation
West Hartford, CT-
Educational Website
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Free assessment
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Price Transparency
Services Offered
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Window Replacement
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Tempered Glass
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Double-Hung
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Glass Showers
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Residential Windows
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Custom Window Designs
Yargueta Construction
Newington, CT-
Good Customer Service
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Price Transparency
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Educational Website
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Free assessment
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Timely Service
Services Offered
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Full-Service Installations
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Custom Window Designs
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Commercial Windows
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Glass Showers
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Window Replacement
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Residential Windows
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Double-Hung
Nu-Face Home Improvements
Berlin, CT-
Free assessment
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Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Double-Hung
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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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Energy-Efficient Options
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Window Replacement
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Residential Windows
Mainville Windows & Doors
Newington, CT-
Price Transparency
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Free assessment
Services Offered
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Bay Windows
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Commercial Windows
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Residential Windows
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Sliding Glass
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Glass Showers
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Custom Window Designs
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Aluminum Window Frames
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Window Replacement
Peoples Products - HR40 Windows
Newington, 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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Fast Delivery
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Residential Windows
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Window Replacement
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Commercial Windows
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Aluminum Window Frames
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Energy-Efficient Options
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Custom Window Designs
Cussons Sash
Glastonbury, CT-
Good Customer Service
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Free assessment
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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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Fast Delivery
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Residential Windows
Castle Windows
East Berlin, 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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Window Replacement
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Custom Window Designs
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Residential Windows
Energy Busters LTD
Hartford, CT-
Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Custom Window Designs
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Window Replacement
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Energy-Efficient Options
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Residential Windows
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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Custom Window Designs
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Window Replacement
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Residential Windows
Home Services at The Home Depot
Berlin, CT-
Good Customer Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Stained Glass
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Window Replacement
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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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Fast Delivery
Highland Window Company, LLC
West Hartford, CT-
Good Customer Service
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Free assessment
Services Offered
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Double-Hung
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Residential Windows
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Window Replacement
Window Restorations of Connecticut - formerly Bi-Glass of Connecticut
Berlin, CT-
Price Transparency
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Good Customer Service
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Timely Service
Services Offered
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Window Replacement
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Residential Windows
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Energy-Efficient Options
Mercury Excelum Inc
East Windsor, CT-
Educational Website
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Good Customer Service
Services Offered
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Energy-Efficient Options
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Commercial Windows
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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
ProEdge Remodeling by Custom Built
Windsor, 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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Commercial Windows
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Fast Delivery
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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
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Sliding Glass
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Double-Hung
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Window Replacement
Columbia Glass Inc
Columbia, CT-
Good Customer Service
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Price Transparency
Services Offered
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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
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Window Replacement
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Tempered Glass
Calculate how much you can expect to pay for window installation and replacement in Glastonbury, 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 Glastonbury Saves You Money
By upgrading to energy-efficient windows, you and your family can benefit in several ways, such as:
- Better temperature control in your home: Living in a very cold city like Glastonbury often means depending on your heater to keep your house cool. Energy-efficient windows can lower how much heat is lost through your windows when heating your home.
- Save money on energy bills: After you upgrade to energy-efficient windows, you can see a reduction in your bills by about 12% since you'll require less energy to heat or cool your house.
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its real estate value, particularly if you have an older home.
- Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help reduce damage from the sun's UV rays to your floors, carpets and furniture.
Estimated Cost of Window Replacement in Glastonbury
Windows come in different shapes, purposes and styles, so costs and services will differ tremendously based on several factors. Below, we describe the average cost and services that you can get from window installers.
How Much Do New Windows Cost?
According to our research, the typical cost of replacing a single window is about $600. However, window replacement costs can range from $200 to $1,200 per window. This is because the cost of window installations are based on a variety of factors specific to your home, like the size, material and number of windows you need to replace, as well as where your property is located.
It's important to keep in mind that windows with the best efficiency may cost more upfront but can save you hundreds of dollars by lowering your energy bills. Investing in certified energy-efficient windows can save Glastonbury homeowners $446+ a year when replacing single-pane windows.
Getting free quotes from multiple installers is the best way to find out which one is right for you.
What Services do Window Installers Offer?
There are typically two types of window replacement services: full-frame and pocket installations.
Full-frame installations entail replacing the complete window, including the frame, trim and sill. Full-frame installations are necessary when you want a new style or your window has noticeable damage or rot. Full-frame installations are more involved and will raise the overall cost. Pocket installations are simpler and won't carry as large a bill because they entail simply replacing the window within its existing frame. But if the frame has any damage, you should opt for a full-frame installation instead.
Your window installation company will be able to help you decide what's best for your needs. In Glastonbury, the decision will mostly depend on the age of your home and if there's any damage. Wood can decay if not maintained properly 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 Glastonbury
EcoWatch reviews are different from most reviews because we're examining these companies through a sustainability lens. We've assessed the top window installation companies in Glastonbury primarily based on energy efficiency, as it's what's best for the environment and for you as a homeowner. Energy-efficient windows have been shown to reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
This one is self-explanatory, but we've chosen to highlight window installation companies that serve Glastonbury so you can find a quality window installation company near you.
Work Quality
We're certain that you're looking for professionals who do a great job installing windows. We've vetted each installer featured in our guide to make sure its technicians are well-qualified and that the company has received plenty of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don't have nice things to say about their experience with a certain company, it won't be featured on EcoWatch.
Cost
This one is a give-and-take: as with most services, cheap window installers may not provide the most quality service. Still, we want to make sure we're highlighting companies that provide a spectrum of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies that provide 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 a while. Window installation companies that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
Glastonbury, CT Window Replacement FAQs
What is the average cost to install windows in a home?
The national average cost of replacing one window is about $600 but can range between $200 and $1,200, depending on several factors. The price is typically dependent on the type and material of the window, the location of your property and the size of the window. Also, remember that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What are the most common types of replacement windows?
There are various kinds of windows you can get for your home, such as picture windows, casement windows, double-hung and single-hung windows, awning windows, transom windows, slider windows and bay windows.
Can you install your own windows?
If you're handy and have experience with installing a replacement window, it's possible to install your own windows. However, if you don't have the time or experience, we recommend getting a professional to do it for you.
How long does window installation generally take?
Since the average installation time is 30 minutes per window, around 16 windows can be installed in a typical 8-hour work day.