20 Best Window Companies in Newtown, CT (2023 Reviews)
Thinking about improving your house's look? The top window replacement companies can help.
We analyzed all the top-rated window companies in Newtown 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 guide on the top window installation companies in Newtown may not seem like the most riveting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might realize. According to the Department of Energy, heat gained or lost through old or damaged windows could account for 25-30% of household energy climate control costs.
Replacement windows improve your home's insulation, not only making you and your family more comfortable during extreme temperatures, but also saving you some money and helping the environment.
We've put together a guide on the best installation companies to help you in your search, so you can not only take advantage of brand new windows, but also save money on your electricity bills.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Newtown
The EcoWatch team evaluated dozens of installers in Newtown to find the top window installation companies for our readers. The companies in this article scored best in our review categories, which include energy-efficient offerings, price, availability, customer service, local expertise and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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Quality of service will depend on your area
Window World has windows expertise in Newtown. 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 industry, and it currently provides services to 200 locations nationwide.
You may want to consider going with Window World if you're looking for a installer 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 is an Energy Star partner with 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 ask your Window World representative when inquiring about services.
How much does Window World cost in Newtown?Prices are not available on Window World’s website because the cost of window installment depends on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. You can request a free quote on its website for more information about pricing.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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More expensive than competition
Renewal by Andersen has the best availability in Newtown. Andersen has around 27 years of experience in the window installation business. The company has a lot of positive reviews from customers online.
Andersen may be the company for you if you're interested in one 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 WindowsRenewal by Andersen’s commitment to sustainability shows in its energy-efficient window offerings. 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 Newtown?Prices aren’t mentioned on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. The best way to get more accurate information is to receive a free quote from the company.

Aeroseal Windows
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Many years of experience
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Great industry reputation
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Low number of customer complaints
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Manufactures products in-house
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Custom Designs
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No lifetime warranty
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Not ideal for residential installations
Aeroseal Windows offers the best window installation for businesses in Newtown. 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 been in the window installation industry for about 23 years. The provider has plenty of positive reviews from customers on online review websites.
If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the perfect company for you.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows’s commitment to sustainability shows in its energy-efficient window offerings. 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 Newtown?Even though pricing is not available on Aeroseal’s website, it provides high-quality windows at a competitive price point. You can inquire about a free quote on its website for more information about pricing.

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 has the best residential windows in Newtown. Window Nation has around 16 years of experience in the window installation business. The company has a lot of positive reviews from customers online.
Window Nation may be the company for you if you're interested in one that 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’s commitment to sustainability shows in its energy-efficient window offerings. 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 Newtown?Prices aren’t mentioned on Window Nation’s 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. The best way to get more accurate information is to receive a free quote from the company.
We strive to stay unbiased and transparent by listing pros and cons for each provider. Additionally, any partnerships do not influence our reviews.
More Window Companies in Newtown
Renewal by Andersen - Branford
Branford, 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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Window Replacement
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Custom Window Designs
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Stained Glass
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Glass Showers
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Sliding Glass
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Commercial Windows
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Double-Hung
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Residential Windows
Window World of the Hudson Valley
Wappingers Falls, NY-
Free assessment
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Price Transparency
Services Offered
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Custom Window Designs
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Double-Hung
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Bay Windows
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Window Replacement
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Sliding Glass
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Energy-Efficient Options
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Residential Windows
Window Nation
Wallingford, 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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Custom Window Designs
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Energy-Efficient Options
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Bay Windows
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Sliding Glass
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Double-Hung
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Residential Windows
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Window Replacement
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Stained Glass
Bert Falsetti's Home Improvement LLC
Shelton, CT-
Educational Website
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Price Transparency
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Free assessment
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Timely Service
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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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Residential Windows
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Sliding Glass
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Double-Hung
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Energy-Efficient Options
Pella Windows & Doors of Monroe
Monroe, 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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Sliding Glass
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Window Replacement
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Commercial Windows
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Bay Windows
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Custom Window Designs
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Double-Hung
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Residential Windows
Fine Touch Services, LLC
Redding, CT-
Educational Website
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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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Sliding Glass
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Commercial Windows
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Fast Delivery
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Glass Showers
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Custom Window Designs
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Window Replacement
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Residential Windows
Window Depot USA of Southern CT
Trumbull, CT-
Educational Website
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Free assessment
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Price Transparency
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Timely Service
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Good Customer Service
Services Offered
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Sliding Glass
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Double-Hung
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Energy-Efficient Options
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Fast Delivery
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Residential Windows
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Window Replacement
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Bay Windows
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Custom Window Designs
CMW Roofing & Siding
Monroe, CT-
Educational Website
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Free assessment
Services Offered
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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
Woodbury Supply Company, Inc.
Oxford, 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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Energy-Efficient Options
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Fast Delivery
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Custom Window Designs
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Residential Windows
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Window Replacement
Superior Windowland
Newtown, CT-
Free assessment
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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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Glass Showers
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Window Replacement
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Double-Hung
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Residential Windows
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Sliding Glass
Town & Country Glass Shop llc
Woodbury, CT-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Glass Showers
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Window Replacement
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Residential Windows
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Custom Window Designs
Home Services at The Home Depot
New Milford, CT-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Custom Window Designs
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Glass Showers
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Stained Glass
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Double-Hung
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Fast Delivery
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Commercial Windows
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Window Replacement
Apple Siders LLC
New Milford, CT-
Free assessment
Services Offered
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Window Replacement
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Custom Window Designs
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Residential Windows
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Commercial Windows
Glass Guys
Ridgefield, CT-
Price Transparency
Services Offered
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Window Replacement
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Double-Hung
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Glass Showers
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Full-Service Installations
Home Comfort Practice, Inc.
Stratford, CT-
Timely Service
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Good Customer Service
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Price Transparency
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Educational Website
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Free assessment
Services Offered
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Custom Window Designs
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Energy-Efficient Options
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Commercial Windows
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Residential Windows
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Glass Showers
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Window Replacement
Standard Glass
Bridgeport, CT-
Free assessment
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Good Customer Service
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Price Transparency
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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Window Replacement
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Glass Showers
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Fast Delivery
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Double-Hung
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Window Repair
Ener-G Tech, Inc.
Stratford, CT-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Custom Window Designs
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Window Replacement
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Energy-Efficient Options
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Glass Showers
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Commercial Windows
Fancy House, LLC
Stratford, CT-
Timely Service
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Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Glass Showers
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Fast Delivery
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Residential Windows
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Custom Window Designs
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Window Replacement
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Sliding Glass
Pella Windows & Doors of Norwalk
Norwalk, 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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Double-Hung
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Residential Windows
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Sliding Glass
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Window Replacement
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Bay Windows
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Custom Window Designs
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Commercial Windows
Honey Do Men Home Remodeling & Repair
Carmel Hamlet, NY-
Free assessment
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Timely Service
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Residential Windows
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Stained Glass
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Window Replacement
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Custom Window Designs
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Glass Showers
Calculate how much you can expect to pay for window installation and replacement in Newtown, 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 Newtown Saves You Money
When you switch to energy-efficient windows, you may see several perks, including:
- More efficient energy use in your household: Because the winters can get very cold in Newtown, homeowners often rely on their heater a lot. Energy-efficient windows reduce how much heat is lost through your windows, making it easier to keep your home warm.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
- Protect your investment: If you have a relatively old home, your windows are most likely outdated. Upgrading your windows can make your home more comfortable and also help raise the value of your home if you decide to sell.
- Save money on power bills: The Department of Energy estimates that heat gained or lost via windows makes up about 25-30% of energy use in your home. Upgrading to energy-efficient windows can help decrease that amount, which helps you save more on your bills.
Estimated Cost of Window Replacement in Newtown
Windows come in various styles, shapes and purposes, so costs and services will differ considerably based on several factors. Below, we detail the average cost and services that you can get from window installation companies.
How Much Do New Windows Cost?
On average, Newtown homeowners can expect their window replacements to range from $250 to $1,200. The average cost sits at about $600. This is because window installations depend on a variety of factors specific to your home, including the size, material and number of windows you need to install, as well as the location of your property.
It's also worth bearing in mind that energy-efficient windows will usually cost more initially, but Energy Star estimates that upgrading the windows on your Newtown home can mean an average energy savings of $236 to $319 each year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you'll save by upgrading to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.
Something else that affects the overall cost is the material you pick for your frame. Aluminum frames are generally the least expensive and are sturdy and light, but they provide poor insulation. On the other hand, wood frames are the most expensive because they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.
What Services do Window Installers Offer?
The first thing to ask yourself when planning to replace your windows is: Should you get a full-frame installation or a pocket installation?
Full-frame installations entail replacing the full window, including the frame, sill and trim. You most likely need a full-frame installation when you want a new style or your window has significant deterioration. Because full-frame installations are more involved, they will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are simpler and won't cost as much, but you can't do this kind of installment if you have any pre-existing rot or water damage.
If you're still trying to decide which kind of installation you should get, you can consult with your provider and get their advice. The choice mostly depends on the age of your window frames and if there's any damage.
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 Newtown
The EcoWatch Reviews team differs from most reviewers since we examine these companies through a sustainability lens. Along with energy efficiency, we assessed several window installers in Newtown and ranked them using the following methodology:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installation companies that serve the Newtown area so you can find the right window installation company near you.
Work Quality
We're willing to bet that you're looking for a company to do a great job installing windows. We've vetted each company featured in our guide to ensure its contractors are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent online reviews to determine the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction might be the most important factor, as it indicates the quality of services across nearly every category, including warranty, quality of parts, professionalism, quality of installation, cost and more.
Cost
This one is a give-and-take: similar to most services, cheap window installers are not going to 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 hefty investment, so you'll want to be certain that investment is well protected. Window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Newtown's climate, homeowners need to be wary of low efficiency, rot and water damage. We factored in local experience to reflect the ability of Newtown window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Newtown, CT Window Replacement FAQs
What is the average cost to replace windows?
The average cost of replacing a window can range from $450 to $650. There are several factors that influence how much it costs, which include how energy-efficient the windows are, the number of windows, styles and sizes of windows, your property's location, local labor costs and the materials used in designing the windows.
What kind of window is the best for energy efficiency?
A window's energy efficiency depends on a variety of factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are often the most energy-efficient since they are certified by the U.S. Department of Energy.
Can you install your own windows?
If you're handy and have the time and patience to do the job right, it's possible to install your own windows. However, if you don't have the time or know-how, we recommend hiring a professional.
Should I replace all my windows at once?
If you want to get more efficient windows and save money on your energy bills, replacing all your windows together is the only way to see a noticeable difference. On the other hand, if you have only a few windows that are broken or leaky, you can replace just those.