20 Best Window Companies in Danbury, CT (2023 Reviews)
Thinking of improving your house's energy efficiency? The top window replacement companies can help.
We analyzed all the top-rated window companies in Danbury 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
Although clean energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house's energy efficiency can also have a big impact on home energy conservation. If your windows are outdated or drafty, you could be sending 25-30% of your house's heat or cool air out of them.
Thankfully, helping you save energy with upgraded windows also aligns with our goals of reducing energy usage for the environment.
Efficient windows are especially important in Danbury, where the temperature varies throughout the year. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $441 per 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 Danbury
The EcoWatch team evaluated dozens of installers across the country to find the top window replacement companies for our readers. The companies we've included in this article scored best in our categories, including energy-efficient offerings, availability, price, customer service and more.

Window World
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EnergyStar Partner
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Lifetime warranty
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Quality of service will depend on your area
Window World offers windows expertise in Danbury. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window industry for about 27 years.
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 WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World’s offerings are Energy Star certified, so be sure to mention that you’d like Energy Star windows when inquiring.
How much does Window World cost in Danbury?Window World doesn’t have any cost information available on its website, but it's known for offering some of the most affordable window installations around. The best way to get more accurate pricing information is to ask for a free quote from the company.

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 provides the best availability in Danbury. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window replacement industry. The provider has plenty of positive reviews from customers online.
It uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. 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 Danbury?Andersen doesn’t have any pricing information listed 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. Requesting a free quote on its website is the best way to get more accurate pricing information.

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 Danbury. This company has been operating since 1999 and currently serves 13 states and Washington D.C. Many positive reviews on customer review websites back the provider's reputation.
Aeroseal may be the company for you if you want one that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows caters to eco-conscious consumers by providing 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 Danbury?Prices aren’t mentioned on Aeroseal’s website, but it provides high-quality windows at a competitive price point. You can ask for a free quote on its website for more information about the cost.

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 provides the best residential windows in Danbury. It's 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 window replacement industry. The provider has plenty of positive reviews from customers online.
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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. 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 Danbury?Window Nation doesn’t have any pricing information listed 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. Requesting a free quote on its website is the best way to get more accurate pricing information.
We have tried to be unbiased and transparent by listing pros and cons for each provider. Additionally, any partnerships do not influence our reviews.
More Window Companies in Danbury
Renewal by Andersen
Stamford, CT-
Free assessment
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Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Commercial Windows
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Double-Hung
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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
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Sliding Glass
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Stained Glass
Window World of the Hudson Valley
Wappingers Falls, NY-
Free assessment
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Price Transparency
Services Offered
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Energy-Efficient Options
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Residential Windows
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Sliding Glass
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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
Window Nation
Wallingford, 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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Custom Window Designs
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Double-Hung
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Residential Windows
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Bay Windows
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Stained Glass
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Sliding Glass
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Window Replacement
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Energy-Efficient Options
Honey Do Men Home Remodeling & Repair
Carmel Hamlet, NY-
Free assessment
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Educational Website
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Timely Service
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Good Customer Service
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Price Transparency
Services Offered
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Stained Glass
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Residential Windows
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Glass Showers
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Custom Window Designs
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Window Replacement
Fine Touch Services, LLC
Redding, CT-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Sliding Glass
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Glass Showers
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Window Replacement
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Custom Window Designs
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Commercial Windows
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Fast Delivery
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Residential Windows
Superior Windowland
Newtown, CT-
Free assessment
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Educational Website
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Price Transparency
Services Offered
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Sliding Glass
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Custom Window Designs
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Double-Hung
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Glass Showers
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Window Replacement
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Residential Windows
Glass Guys
Ridgefield, CT-
Price Transparency
Services Offered
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Double-Hung
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Full-Service Installations
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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
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Commercial Windows
Apple Siders LLC
New Milford, CT-
Free assessment
Services Offered
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Commercial Windows
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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-
Good Customer Service
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Price Transparency
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Free assessment
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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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Fast Delivery
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Commercial Windows
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Double-Hung
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Window Replacement
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Stained Glass
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Glass Showers
CMW Roofing & Siding
Monroe, CT-
Educational Website
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Free assessment
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
HPM Craftsmen
Holmes, NY-
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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Glass Showers
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Full-Service Installations
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Residential Windows
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Fast Delivery
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Double-Hung
Pella Windows & Doors of Monroe
Monroe, CT-
Good Customer Service
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Educational Website
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Free assessment
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Price Transparency
Services Offered
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Double-Hung
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Commercial Windows
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Window Replacement
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Residential Windows
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Sliding Glass
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Bay Windows
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Custom Window Designs
Jilco Window Corp.
Granite Springs, NY-
Good Customer Service
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Price Transparency
Services Offered
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Commercial Windows
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Full-Service Installations
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Aluminum Window Frames
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Custom Window Designs
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Residential Windows
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Glass Showers
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Window Replacement
Window Depot USA of Southern CT
Trumbull, 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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Window Replacement
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Bay Windows
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Sliding Glass
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Fast Delivery
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Residential Windows
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Energy-Efficient Options
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Double-Hung
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Custom Window Designs
Pella Windows & Doors of Norwalk
Norwalk, CT-
Price Transparency
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Educational Website
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Good Customer Service
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Free assessment
Services Offered
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Sliding Glass
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Custom Window Designs
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Commercial Windows
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Residential Windows
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Double-Hung
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Bay Windows
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Window Replacement
Bert Falsetti's Home Improvement LLC
Shelton, CT-
Price Transparency
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Free assessment
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Timely Service
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Good Customer Service
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Educational Website
Services Offered
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Custom Window Designs
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Energy-Efficient Options
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Window Replacement
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Double-Hung
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Sliding Glass
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Residential Windows
Woodbury Supply Company, Inc.
Oxford, CT-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Energy-Efficient Options
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Residential Windows
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Window Replacement
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Fast Delivery
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Custom Window Designs
Town & Country Glass Shop llc
Woodbury, CT-
Free assessment
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Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Custom Window Designs
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Residential Windows
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Window Replacement
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Glass Showers
Standard Glass
Bridgeport, CT-
Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Fast Delivery
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Commercial Windows
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Window Replacement
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Residential Windows
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Glass Showers
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Double-Hung
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Custom Window Designs
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Window Repair
Home Comfort Practice, Inc.
Stratford, CT-
Good Customer Service
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Price Transparency
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Free assessment
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Timely Service
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Educational Website
Services Offered
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Residential Windows
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Window Replacement
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Glass Showers
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Custom Window Designs
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Commercial Windows
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Energy-Efficient Options
Calculate how much you can expect to pay for window installation and replacement in Danbury, 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 Danbury Saves You Money
By switching to energy-efficient windows, you can enjoy several benefits, including:
- More efficient energy use in your household: In Danbury where the winters can be very cold, energy-efficient windows reduce the amount of heat that is lost through your windows, making it easier to keep your house warm.
- Protect your investment: When you have an older home, your windows could also be outdated or leaky. Upgrading your windows is an important part of maintaining your property and its real estate value.
- 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.
- Save on power bills: Upgrading to energy-efficient windows reduces your energy bills by about 12% because you use less energy.
Estimated Cost of Window Replacement in Danbury
Windows come in various shapes, styles and purposes, so costs and services will differ considerably based on your project. Below, we detail the typical cost and services that you can get from window installation companies.
How Much Do New Windows Cost?
Typically, Danbury homeowners can anticipate their window installations to range from $250 to $1,200. The most common installations sit at around $600. But prices vary considerably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also provide door installations, which will add extra costs to your project.
With windows, efficiency is the most important factor for many homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — especially during the summer and winter — they can give you many years of energy savings. According to Energy Star, buying certified energy-efficient windows can save Danbury homeowners $441+ per year after replacing single-pane windows.
Getting free quotes from multiple companies is the best way to figure out which one is right for you.
What Services do Window Installers Offer?
In regard to window replacements, there are generally two kinds that your installer will offer: full-frame and pocket installations.
Full-frame installations are usually done when you want a new style or your window has significant rot. With this service, your installers will replace the complete window, including the frame, trim and sill. A pocket installation entails replacing a window within the existing frame, which tends to be less expensive than a full-frame installation.
Your window installation company can help you choose which type of installation you need.
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 Danbury
In our search to find the most reliable, eco-friendly window installers in Danbury, the EcoWatch team landed on the above companies as the top window installation companies in the city. Along with energy efficiency, we assessed several window installers in Danbury and ranked them using the following methodology:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve Danbury so you can find the right window installation company near you.
Work Quality
When picking new windows, the quality and range of services can often play just as important of a role in overall efficiency and performance as the type of window you opt for. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent customer feedback to find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it reflects the quality of services across most other categories, including warranty, quality of installation, professionalism, cost, quality of parts and more.
Cost
This one is a give-and-take: similar to most services, cheap window companies may not provide the most quality service. Still, we want to ensure we're highlighting companies that offer a range 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 offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a good track record in the industry. Window installers that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
Danbury, CT Window Replacement FAQs
How much should a window install cost?
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 generally influenced by the location of your property, the type and material of the window and the size of the window. Also, keep in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What type of window is the best for energy efficiency?
Generally, double-pane windows are more efficient than single-pane windows and windows that don't open are more efficient than windows that do. If you want to be sure you'll have the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — this means they're certified energy-efficient by the U.S. Department of Energy.
When do I need to use a window installation company?
Unless you have home repair skills and have all of the necessary tools to replace your own windows, we recommend hiring the pros. The window installation process is complicated and can take anywhere from four to six hours for one window. Although it's tempting to try to do it yourself to save money, hiring a company is a faster, more efficient and much safer option.
How long does it usually take to install windows?
Because a window takes about 30 minutes to install, around 16 windows can be installed during an 8-hour work day.