24 Best Window Replacement Companies in Kensington, CT (Feb 2023)
Window Companies Near Me
Thinking about upgrading your home's windows? We've got all the information you need in this list of the top window installation companies.
We analyzed all the top window installers in Kensington and selected the top 24 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
The EcoWatch team is all about helping Kensington homeowners make their homes more eco-friendly. When it's the middle of winter, your old and drafty windows could be making your home harder to heat and more uncomfortable for you.
That's not great for your wallet or the environment, but one of the top window installation companies can help with that.
We've made a guide on the top installation companies to help you in your search, so you can not only benefit from brand new windows, but also save money on your electricity bills.
Best Affordability
Window World
- Large serice area
- EnergyStar Partner
- Low prices relative to competitors
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Great industry reputation
- Award-winning company
- No lifetime warranty
Best for Residential Windows
Window Nation
- Manufactures products in-house
- Award-winning company
- Custom designs
- Installation not covered by warranty
Best Window Replacement Companies in Kensington
The EcoWatch Reviews team examined dozens of providers that service the Kensington area to find the best window installation companies that fit our standards. The installers mentioned in this article scored best in our review categories, such as energy-efficient offerings, price, local expertise, availability, customer service and more.

Window World
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Large serice area
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EnergyStar Partner
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Low prices relative to competitors
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Quality of service will depend on your area
Window World offers windows expertise in Kensington. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window replacement business.
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 WindowsWindow World's commitment to sustainability can be seen in its energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Kensington?Window World doesn't have any prices displayed 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 ask for a quote on the company's website.

Renewal by Andersen
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Member of US Green Building Council
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Great industry reputation
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Award-winning company
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No lifetime warranty
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window installation business for about 27 years. Its reputation is backed by hundreds of positive reviews on customer review websites.
You may want to consider going with Andersen if you're interested in a installer that 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 available from Renewal by Andersen, 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 Kensington?Though pricing is not available on Andersen's website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can ask for a free quote on its website for more information about the cost.

Window Nation
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Manufactures products in-house
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Award-winning company
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Custom designs
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Installation not covered by warranty
Window Nation is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has about 16 years of experience in the industry, and it currently provides services to residents within 75 miles of its showrooms, which are in 13 states. The provider has many glowing reviews from customers on online review websites.
You may want to consider picking Window Nation if you're looking for a installer that 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 range of window types available from Window Nation, 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 Kensington?Though prices are not available on Window Nation's website, based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. For more accurate information on pricing, you can get a 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 provides the best window installation for businesses in Kensington. 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 23 years of experience in the window installation business, and it has become one of the best companies in Kensington. Its reputation is backed by a considerable amount of positive reviews on customer 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 WindowsAeroseal Windows is an Energy Star partner offering 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 be sure to mention that you want energy-efficient windows to your Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in Kensington?Aeroseal doesn't have any prices available on its website, but it provides high-quality windows at a competitive price point. If you'd like more accurate pricing information, you can request a quote on the company's website.
We strive to remain unbiased and transparent by describing pros and cons for every company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Replacement Companies in Kensington
Renewal by Andersen - Branford
Branford, CT-
Dependable Service
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Educational Website
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Award-Winning
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No-Hassle Pricing
Services Offered
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Residential Windows
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Custom Windows
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
TL Home Improvement LLC
Shelton, CT-
Locally Recognized for Quality
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Good Customer Service
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No-Hassle Pricing
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Free Quotes
Services Offered
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Residential Windows
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Fast Delivery
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Arrives on Time
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No-Hassle Pricing
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Free Quotes
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Helps Educate Customers
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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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
Nu-Face Home Improvements
Plantsville, CT-
Free Quotes
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Arrives on Time
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Helps Educate Customers
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Price Transparency
Services Offered
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Residential Windows
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
Advanced Window Systems LLC
Cromwell, CT-
Educational Website
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Arrives on Time
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No-fee Quotes
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Reliable Service
Services Offered
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Eastern Glass & Shower Door
Milford, CT-
Free Quotes
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Excellent Customer Service
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Helps Educate Customers
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Price Transparency
Services Offered
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Doors
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Full-Service Installations
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Custom Windows
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Tempered Glass
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Residential Windows
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Commercial Windows
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Aluminum Window Frames
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Sliding Glass
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Glass Showers
Mainville Windows & Doors
Newington, CT-
No-fee Quotes
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No-Hassle Pricing
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Timely Service
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Helps Educate Customers
Services Offered
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Residential Windows
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
United Glass & Mirror Co
Bozrah, CT-
No-Hassle Pricing
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Good Customer Service
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Award-Winning
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Educational Website
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
Window World of Hartford
Manchester, CT-
No-fee Quotes
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Helps Educate Customers
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Good Customer Service
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Locally Recognized for Quality
Services Offered
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Custom Window Designs
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Fast Delivery
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Sliding Glass
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Double-Hung
V. Nanfito Roofing & Siding
Meriden, CT-
Arrives on Time
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Award-Winning
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Free Quotes
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Reliable Service
Services Offered
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Residential Windows
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Business Windows
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Full-Service Installations
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Custom Windows
Mr. Handyman of Guilford, North and East Haven
East Haven, CT-
Good Customer Service
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Educational Website
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Dependable Service
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Free Quotes
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Double-Hung
Turner Home Improvement Contractors, LLC,
Glastonbury, CT-
No-fee Quotes
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Excellent Customer Service
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Dependable Service
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Price Transparency
Services Offered
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Residential Windows
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Business Windows
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Full-Service Installations
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Custom Window Designs
Peter L Brown
Granby, CT-
Dependable Service
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Excellent Customer Service
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Free Quotes
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Helps Educate Customers
Services Offered
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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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Double-Hung
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Sliding Glass
Capitol Glass Co Inc
West Hartford, CT-
Excellent Customer Service
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Free Quotes
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Helps Educate Customers
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No-Hassle Pricing
Services Offered
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Residential Windows
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Architectural Glass
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Doors
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Commercial Windows
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Sliding Glass
Torrington Replacement Windows
Torrington, CT-
Price Transparency
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Educational Website
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No-fee Quotes
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Good Customer Service
Services Offered
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Architectural Glass
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Sliding Glass
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Bay Windows
Clinton Glass
Clinton, CT-
Award-Winning
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Educational Website
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Price Transparency
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Free Quotes
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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Commercial Windows
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Sliding Glass
Plymouth Glass & Mirror, Inc.
Thomaston, CT-
Award-Winning
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Price Transparency
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No-fee Quotes
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Educational Website
Services Offered
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Glass Showers
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Residential Windows
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Architectural Glass
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Doors
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Custom Window Designs
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Business Windows
Villwell Builders, LLC
Waterbury, CT-
Reliable Service
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No-fee Quotes
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Educational Website
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No-Hassle Pricing
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
Thomas Garbati Builders, LLC
Waterford, CT-
Dependable Service
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No-Hassle Pricing
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Helps Educate Customers
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Timely Service
Services Offered
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Custom Windows
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Residential Windows
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Double-Hung
Renewal by Andersen Windows Connecticut
Cromwell, CT-
Price Transparency
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Reliable Service
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Free Quotes
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Excellent Customer Service
Services Offered
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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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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Wallingford Glass
Wallingford, CT-
Good Customer Service
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Dependable Service
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No-Hassle Pricing
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Free Quotes
Services Offered
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Residential Windows
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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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Double-Hung
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Stained Glass
Ring's End
Madison, CT-
Educational Website
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Good Customer Service
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Price Transparency
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No-fee Quotes
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Commercial Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
Ring's End
Branford, CT-
Price Transparency
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Excellent Customer Service
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Free Quotes
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Educational Website
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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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
Cussons Sash
Glastonbury, CT-
Helps Educate Customers
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Good Customer Service
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Reliable 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
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Sliding Glass
How Installing Energy-Efficient Windows in Kensington Saves You Money
There are quite a few perks of switching to energy-efficient windows. Some reasons you may want to consider making the switch include the following:
- Reduce your carbon footprint: In Kensington, you can cut your indirect greenhouse gas emissions by about 147 pounds per year after you switch to energy-efficient windows.
- Save money on electricity bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you use less energy.
- Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.
- 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 property if you decide to sell.
Estimated Cost of Window Replacement in Kensington
When looking into window installation, each company provides varying services and prices. Let's take a look at some typical costs and services.
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 for each window. But costs differ considerably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also offer door installations and replacements, which will make your project cost more.
Whether or not you opt for energy-efficient windows is another factor that will determine the cost. These will typically cost more than other windows, but on the other hand, you can save about $437 a year on your energy bills in Kensington.
Requesting free quotes from multiple installers is the best way to figure out which one will work best for your budget.
What Services do Window Installers Offer?
In regard to window installations, in general there are two types that your installer will offer: full-frame and pocket installations.
Full-frame installations are usually done when you want to change the style of your windows or your window has significant rot. With this service, your installers will replace the whole window, including the frame, sill and trim. A pocket installation involves replacing a window within the existing frame, which is usually less expensive than a full-frame installation.
Your window installer should be able to help you figure out which type of installation you need.
Best Affordability
Window World
- Large serice area
- EnergyStar Partner
- Low prices relative to competitors
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Great industry reputation
- Award-winning company
- No lifetime warranty
Best for Residential Windows
Window Nation
- Manufactures products in-house
- Award-winning company
- Custom designs
- Installation not covered by warranty
How We Choose the Best Window Installers in Kensington
EcoWatch differs from other reviewers, as we're examining these companies through a sustainability lens. Along with energy efficiency, we analyzed several window installers in Kensington and ranked them using the following methodology:
Service Area
Since this is a guide for Kensington, we paid more attention to companies that cover the city. There are other reputable providers that didn't make the list because of the low odds that they would serve the average homeowner in Kensington.
Work Quality
When installing new windows, the quality and variety of services often plays just as important of a role in overall efficiency and performance as the brand of window you opt for. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent online reviews to determine the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it indicates the quality of services across nearly every category, including cost, quality of parts, professionalism, warranty, quality of installation and more.
Cost
This one is a give-and-take: as with most services, cheap window companies may not provide the most quality service. Still, we want to ensure we're highlighting companies that provide a range of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a significant investment, so you'll want to be certain that investment is protected. Window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Because of Kensington's climate, homeowners will want to mitigate rot, low efficiency and water damage. We factored in local experience to reflect the ability of Kensington window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Kensington, CT Window Replacement FAQs
What is the average cost to install windows?
The national average cost of replacing a window is around $600 but can range from $200 to $1,200, based on several factors. The price is usually influenced by 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 upfront but can save you a decent amount of money a year in energy bills.
Which kind of window is the best?
Generally, double-pane windows are more efficient than single-pane windows and windows that do not open are more efficient than windows that do. To be sure you're getting the most energy-efficient windows, look for models that have the blue Energy Star certification attached to them — they're certified energy-efficient by the U.S. Department of Energy.
Do you really need to use a window installation company?
You should hire a window installation company whenever you need to replace your windows. Installing windows is a involved process that can be difficult to do on your own, so it's best handled by the professionals.
Should I replace my windows all at once?
If your windows are greater than 20 years old, it's probably time to replace all of them. At that point, they are often less efficient, leakier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less stress.