20 Best Window Companies in Southbury, CT (2025 Reviews)
If you’re thinking of getting new windows, our list of the top window installation companies can help.
We analyzed all the top-rated window companies in Southbury and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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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 home’s efficiency can also have a large impact on home energy conservation. Potential leaks or drafts from your windows can make your home uncomfortable in the summer or winter.
That’s also bad news for the environment, as the additional energy required by leaky windows increases your carbon footprint.
Efficient windows are especially important in Southbury, where the temperature varies throughout the year. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $420 per year.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Southbury
The EcoWatch team examined dozens of providers that service the Southbury area to find the best window installation companies that fit our standards. The providers mentioned in this article scored best in our review categories, which include energy-efficient offerings, price, local expertise, customer service, availability and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World has windows expertise in Southbury. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows industry, and it has proved to be one of the most reputable companies in the business. The provider has many glowing reviews from customers on online review websites.
You may want to consider opting for 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 WindowsThere are a wide range of window types available from Window World, some of which are Energy Star products. 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 Southbury?Window World does not detail prices on its website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can inquire about a quote on the company’s website.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen has the best availability in Southbury. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the windows industry, and it has proved to be one of the most reputable companies in the business. The provider has many glowing reviews from customers on online review websites.
You may want to consider opting for Andersen if you're looking for 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 range 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 Southbury?Andersen does not detail prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you’d like more accurate information, you can inquire about a quote on the company’s website.

Aeroseal Windows
Many years of experience
Great industry reputation
Low number of customer complaints
Manufactures products in-house
Custom Designs
No lifetime warranty
Not ideal for residential installations
Aeroseal Windows has the best window installation for businesses in Southbury. 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 windows industry, and it has proved to be one of the most reputable companies in the business. The provider has many glowing reviews from customers on online review websites.
You may want to consider opting for Aeroseal if you're looking for a installer that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThere are a wide range of window types available from Aeroseal Windows, some of which are Energy Star products. 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 Southbury?Aeroseal does not detail prices on its website, but it provides high-quality windows at a competitive price point. If you’d like more accurate information, you can inquire about a quote on the company’s website.

Window Nation
Award-winning company
Manufactures products in-house
Custom designs
Wide variety of products and services
Installation not covered by warranty
Limited service area
Window Nation has the best residential windows in Southbury. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This company has 16 years of experience in the windows industry, and it has proved to be one of the most reputable companies in the business. The provider has many glowing reviews from customers on online review websites.
You may want to consider opting for 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 Southbury?Window Nation does not detail prices on its website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. If you’d like more accurate information, you can inquire about a quote on the company’s website.
We have tried to be unbiased and transparent by describing pros and cons for each provider. Additionally, any partnerships do not influence our reviews.
More Window Companies in Southbury
Renewal by Andersen - Branford
Branford, CTEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Glass Doors
Bay Windows
Double-Hung
Window Replacement/Installation
Skylights
Power Home Remodeling
Trumbull, CTTimely Service
Price Transparency
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Wallingford, CTEducational Website
Price Transparency
Free assessment
Services Offered
Bay Windows
Glass Doors
Custom Window Designs
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Window Depot USA of Southern CT
Trumbull, CTGood Customer Service
Free assessment
Timely Service
Educational Website
Price Transparency
Services Offered
Triple Pane Glass
Glass Doors
Window Replacement/Installation
Double-Hung
Energy-Efficient Options
Bay Windows
Vinyl Frames
United Home Experts
Norwalk, CTGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Fiberglass Frames
Window Replacement/Installation
ZN Construction
Canton, CTGood Customer Service
Educational Website
Price Transparency
Free assessment
Timely Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Paramount Gallery
West Hartford, CTFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Glass Doors
Energy-Efficient Options
Window Replacement/Installation
Custom Window Designs
Putnam Windows Inc.
Cold Spring, NYEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Wood Frames
Vinyl Frames
Glass Doors
Window Replacement/Installation
Greenwich Windows Replacement
Greenwich, CTGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Bay Windows
Double-Hung
Window Replacement/Installation
Big Dawg Home Improvements
South Windsor, CTGood Customer Service
Price Transparency
Timely Service
Free assessment
Services Offered
Window Replacement/Installation
Window Repair
Skylights
Energy-Efficient Options
Flawless Glass & Mirror LLC
Holbrook, NYOwner-operated small business
Price Transparency
Good Customer Service
Educational Website
Free assessment
Customized glass options
Free in-home consultation
Services Offered
Mirrors
Glass Showers
Window Replacement/Installation
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
Budget Blinds of Enfield and Hartford
Somers, CTGood Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Custom Window Designs
Doors & Windows
Albertson, NYGood Customer Service
Educational Website
Online product shopping
Sunday availability
Price Transparency
Free assessment
Free in-home or virtual consultation
Services Offered
Vinyl Frames
Window Replacement/Installation
Bay Windows
Double-Hung
Wood Frames
Aspen Home Remodeling, LLC.
Oradell, NJPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Skylights
Energy-Efficient Options
Edge Remodeling, Inc.
Franklin Square, NYFamily-owned and operated
Labor warranties available
Good Customer Service
Free assessment
Free same-day estimates
Price Transparency
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYFree assessment
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Northern Windows Siding, Roofing and Insulation
Goshen, NYFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Bencar Building Systems LLC
Wallingford, CTGood Customer Service
Services Offered
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Southbury, 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 Southbury Saves You Money
By upgrading to energy-efficient windows, you can benefit in several ways, such as:
- Reduce your carbon footprint: Reducing the amount of energy you use also lowers your carbon emissions. You could reduce it by 147 pounds per year on average.
- Protect your investment: When you have an older home, your windows could also be outdated or drafty. Keeping your windows up to date is an important part of maintaining your property and its value.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
- Save on energy bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you use less energy.
Estimated Cost of Window Replacement in Southbury
When looking into window installation, each company offers varying services and costs. Let’s take a look at some average costs and services.
How Much Do New Windows Cost?
Even though the national average cost of replacing a single window is around $600, it can range from $200 to $1,200. This is because the cost of window installations are based on several factors specific to your home, like the size, material and number of windows you need to replace, as well as where your property is located.
It’s important to keep in mind that windows with the best efficiency may cost more initially but can save you hundreds of dollars via returns on your energy bills. Investing in certified energy-efficient windows can save Southbury homeowners $420+ a year when replacing single-pane windows.
Something else that affects the overall cost is the material you pick for your frame. Aluminum frames are usually the least pricey and are sturdy and light, but they offer poor insulation. On the other hand, wood frames are the most expensive, as 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?
In regard to window installations, there are typically two kinds that your provider will have: full-frame and pocket installations.
A full-frame installation replaces the entire window, including the sill, frame, trim and the window panes. As this type of installation requires more time and labor, it will be more expensive than a pocket installation. A pocket installation entails replacing a window within the existing frame, which is generally cheaper than a full-frame installation.
Your window installer can help you figure out which type of installation you should get.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Southbury
In our hunt to find the most reliable, eco-friendly window installers in Southbury, the EcoWatch Reviews team chose the above companies as the top window installation companies in the city. Along with energy efficiency, we assessed each installer and assigned rankings using the following methodology:
Service Area
This one is pretty self-explanatory, but we’ve chosen to highlight window installers that serve the Southbury area so you can find the right window installation company near you.
Work Quality
We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each installer included on this list to ensure its contractors are well-qualified and that the company has gotten lots of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent online reviews to determine the companies with the highest rates of customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across most other categories, including professionalism, quality of parts, warranty, cost, quality of installation and more.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers want to keep costs as low as possible. When analyzing providers’ prices, 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. That’s why window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have been in the industry for a while. Window installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Southbury, CT Window Replacement FAQs
How much should window installation cost?
The typical cost of replacing a window can range from $450 to $650. There are many factors that affect the price, which include styles and sizes of windows, your property’s location, the materials used in designing the windows, local labor costs, the number of windows and how energy-efficient the windows are.
Which kind of window is the best?
A window’s energy efficiency is affected by a number of factors, including the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.
What services do window installation companies offer?
Window installers visit your property to remove your old windows and replace them with new ones. Some providers install products made by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation.
How long does it usually take to install windows?
Each window takes about 30 minutes to install based on the kind of window. However, the window installation can be a two-day job — or more — if you need to have a lot of windows installed.