21 Best Window Replacement Companies in Danbury, CT (Mar 2023)
Window Companies Near Me
Are you thinking about upgrading your windows? Our guide to the top window installation companies can help you pick the right one for you.
We analyzed all the top window installers in Danbury and selected the top 21 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 March 14, 2023
Why you can trust EcoWatch
The EcoWatch team is all about helping Danbury homeowners make their homes more eco-friendly. The Department of Energy estimates that heat or cool air lost through outdated or drafty windows could be responsible for close to 30% of residential energy climate costs. In Danbury, where the electric bills are an average of $38 per month, that's almost $$137 per year wasted.
Luckily, helping you save money with upgraded windows also helps our goals of reducing energy usage for the environment.
So if you're building a new home, renovating or replacing your windows in Danbury, this is the best place to get started.
Best Affordability
Window World
- EnergyStar Partner
- Large serice area
- Low prices relative to competitors
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Manufactures products in-house
- Great industry reputation
- No lifetime warranty
Best for Residential Windows
Window Nation
- Manufactures products in-house
- Custom designs
- Wide variety of products and services
- Installation not covered by warranty
Best Window Replacement Companies in Danbury
The EcoWatch team assessed dozens of installers across the country to find the best window companies for our readers. We assessed the providers on their energy-efficient offerings, customer service, coverage area, price, local experience 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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Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. This company has been operating since 1995 and currently provides services to 200 locations nationwide.
If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, Window World may be the perfect provider for you.
Energy Efficiency of Window World WindowsWindow World's commitment to sustainability shows 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 Danbury?Pricing information is not available on Window World's website because the cost of window installment varies greatly depending 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. If you'd like to know for sure, you can request a quote on the company's website.

Renewal by Andersen
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Member of US Green Building Council
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Manufactures products in-house
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Great industry reputation
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No lifetime warranty
Renewal by Andersen offers the best availability in Danbury. Andersen has been in the window industry for around 27 years. Its reputation is backed by many positive reviews on customer review websites.
If you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, Andersen may be the company for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen offers some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want high-quality Energy Star windows when inquiring. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in Danbury?Andersen does not list prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can inquire about 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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Custom designs
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Wide variety of products and services
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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 window replacement sector. Hundreds of positive reviews on customer review websites back the company's reputation.
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 WindowsEach 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. Not all of Window Nation's windows are Energy Star certified, so make sure you mention that you'd like Energy Star windows when inquiring.
How much does Window Nation cost in Danbury?Even 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 inquire about 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 is 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 windows industry, and it has proved to be one of the most respected companies in the business. Many positive reviews from customers online back the provider's reputation.
If you're looking for a company that installs windows and doors at businesses across the Eastern U.S, this may be the perfect provider for you.
Energy Efficiency of Aeroseal Windows WindowsThe 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. Not all of Aeroseal's windows are Energy Star certified, so make sure you mention that you'd like Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Danbury?Prices are not available on Aeroseal's website since the cost of window installment depends on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. The best way to get more accurate information is to ask for a free quote from the company.
We aim to remain unbiased and transparent by mentioning pros and cons for each provider. Additionally, any partnerships do not affect our rankings.
More Window Replacement Companies in Danbury
Renewal by Andersen - Branford
Branford, CT-
Free Quotes
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Award-Winning
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Excellent Customer Service
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Arrives on Time
Services Offered
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Residential Windows
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Custom Windows
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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
TL Home Improvement LLC
Shelton, CT-
Timely Service
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Free Quotes
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Consistent Workmanship
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Locally Recognized for Quality
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
Stamford, CT-
No-Hassle Pricing
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Reliable Service
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Timely Service
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Free Quotes
Services Offered
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Custom Windows
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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 Windows
Nu-Face Home Improvements
Plantsville, CT-
Award-Winning
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Excellent Customer Service
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No-Hassle Pricing
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Timely Service
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
ATM Mirror & Glass
Buchanan, NY-
No-Hassle Pricing
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Locally Recognized for Quality
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Helps Educate Customers
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Good Customer Service
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Fast Delivery
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Energy-Efficient Options
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Doors
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Sliding Glass
Mr. Handyman of Upper Fairfield County
Fairfield, CT-
Consistent Workmanship
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Reliable Appointment Windows
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Free Quotes
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Good Customer Service
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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Residential Windows
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Commercial Windows
Giant Siding and Windows
White Plains, NY-
Arrives on Time
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No-fee Quotes
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Price Transparency
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Locally Recognized for Quality
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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Sliding Glass
The Window People
Stamford, CT-
Price Transparency
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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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Residential Windows
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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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Business Windows
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Double-Hung
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Sliding Glass
Eastern Glass & Shower Door
Milford, CT-
No-fee Quotes
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Helps Educate Customers
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Price Transparency
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Excellent Customer Service
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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Business Windows
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Aluminum Window Frames
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Sliding Glass
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Glass Showers
V. Nanfito Roofing & Siding
Meriden, CT-
Reliable Appointment Windows
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Dependable Service
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Award-Winning
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Free Quotes
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-
Award-Winning
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No-fee Quotes
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Good Customer Service
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Educational Website
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
American Windows Plus Inc
White Plains, NY-
Consistent Workmanship
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No-fee Quotes
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Excellent Customer Service
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Educational Website
Services Offered
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Residential Windows
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Architectural Glass
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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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Commercial Windows
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Double-Hung
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Sliding Glass
Torrington Replacement Windows
Torrington, CT-
No-fee Quotes
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Good Customer Service
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Helps Educate Customers
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Price Transparency
Services Offered
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Architectural Glass
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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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Commercial Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Plymouth Glass & Mirror, Inc.
Thomaston, CT-
Free Quotes
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No-Hassle Pricing
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Excellent Customer Service
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Locally Recognized for Quality
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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Commercial Windows
Villwell Builders, LLC
Waterbury, CT-
No-Hassle Pricing
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Award-Winning
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No-fee Quotes
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Educational Website
Services Offered
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Custom Windows
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Residential Windows
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Business Windows
Window King of Connecticut
Stamford, CT-
Helps Educate Customers
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No-Hassle Pricing
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Good Customer Service
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No-fee Quotes
Services Offered
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Residential Windows
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Custom Windows
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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
All Seasons Roofing & Siding Inc
New Windsor, NY-
Price Transparency
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Educational Website
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No-fee Quotes
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Consistent Workmanship
Services Offered
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Residential Windows
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Architectural Glass
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
Wallingford Glass
Wallingford, CT-
Price Transparency
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No-fee Quotes
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Good Customer Service
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Dependable Service
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
New Beginnings Window and Door
Wappingers Falls, NY-
Good 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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Fast Delivery
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Custom Window Designs
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Full-Service Installations
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Commercial Windows
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Sliding Glass
Ring's End
South Salem, NY-
No-Hassle Pricing
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Good Customer Service
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Educational Website
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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 Windows
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Business Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
J C Tonnotti Window Co
Southington, CT-
Consistent Workmanship
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Free Quotes
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Good Customer Service
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No-Hassle Pricing
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Sliding Glass
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Double-Hung
How Installing Energy-Efficient Windows in Danbury Saves You Money
Energy-efficient windows can offer benefits in several ways. Here are some reasons you may want to think about making the switch:
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its value, especially if you have an older home.
- Save money on energy bills: The Department of Energy estimates that heat gained or lost through windows accounts for about 25-30% of residential energy use. Switching to energy-efficient windows can help decrease that amount, which helps you save more on your bills.
- 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.
- Reduce your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% when you install Energy Star certified windows. In Danbury, that's about 147 pounds per year on average.
Estimated Cost of Window Replacement in Danbury
When considering window installation, each company provides different services and prices. Let's take a look at some typical costs and services.
How Much Do New Windows Cost?
Although the national average to replace one window is about $600, it can range from $200 to $1,200. But costs vary remarkably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window installers also provide door installations and replacements, which have a higher price tag.
Keep in mind that energy-efficient windows may cost more, but Energy Star estimates the upgrade will save you between $101 and $583 per year when you replace single-pane windows and between $27 and $197 per year when you replace double-pane, clear glass windows. Your exact savings will vary based on your local climate, energy rates and individual home characteristics.
Asking for free quotes from several installers is the best way to find out which one will work best for your budget.
What Services do Window Installers Offer?
When considering window installations, there are generally two types that your provider will offer: full-frame and pocket installations.
A full-frame installation is a replacement of the full window. It involves removing the old window, the sill, and the exterior and interior trim. It also involves extra materials, such as insulation and drip edges, which increase the overall cost of the project. Also worth noting: you may have to touch up the paint around the window after a full-frame installation. Pocket installations are simpler and won't carry as large a bill, as they involve merely replacing the window within its existing frame. But if the frame has any damage, you should opt for a full-frame installation instead.
Your window installer can help you decide which type of installation you should get.
Best Affordability
Window World
- EnergyStar Partner
- Large serice area
- Low prices relative to competitors
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Manufactures products in-house
- Great industry reputation
- No lifetime warranty
Best for Residential Windows
Window Nation
- Manufactures products in-house
- Custom designs
- Wide variety of products and services
- Installation not covered by warranty
How We Choose the Best Window Installers in Danbury
In our hunt to find the most reliable, eco-friendly window installers in Danbury, EcoWatch landed on the above companies as the best window installation companies in the city. Along with energy efficiency, we reviewed several window installers in Danbury and assigned rankings using the following methodology:
Service Area
Because this is a guide for Danbury, we gave more points to companies that cover the city. There are certainly other reputable providers that didn't make our list because they wouldn't be able to serve homeowners in Danbury.
Work Quality
We're certain that you're looking for professionals who do a great job installing windows. We've vetted each installer in our guide to make sure its contractors are well-qualified and that the company has gotten lots of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another very important review factor. If most customers don't have good things to say about their experience with a certain company, you won't see it featured on EcoWatch.
Cost
Cheaper windows certainly don't mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing the prices of providers, we gave higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that offer lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Due to Danbury's climate, homeowners will want to mitigate rot, water damage and low efficiency. We factored in local experience to reflect the ability of Danbury window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Danbury, CT Window Replacement FAQs
How much does a window install cost?
The national average cost of replacing one window is about $600 but can range between $200 and $1,200, based on a few different factors. The price is often influenced by the location of your property, the type and material of the window and the size of the window. Also, remember that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
Which type of window should I get?
A window's energy efficiency depends on several factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are usually the most energy-efficient since they are certified by the U.S. Department of Energy.
What do window installation companies do?
Window installation professionals go to your property to remove your old windows and replace them with new ones. Some providers install products manufactured by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is finished.
How long does it typically take to install windows?
Each window takes about 30 minutes to install based on the type of window. However, the window installation can be a two-day job — or more — if you need to have a lot of windows installed.
When is the best time of year to replace windows?
Replacement windows can be installed during any season, but warmer weather is typically better. Regardless of when you install them, the contractors will take steps to make sure that too much hot or cold air doesn't get into your home, so the temperature outside isn't necessarily a big factor. What's more important than the temperature is that the weather should be dry.