20 Best Window Companies in Waterbury, CT (2025 Reviews)

If you’re looking to upgrade to new windows, our list of the best window installation companies can help.

We analyzed all the top-rated window companies in Waterbury and selected the best 20 based on:

  • Customer reviews
  • Window installation expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated January 24, 2025

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

Although clean energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your house’s energy efficiency can also have a large impact on home energy conservation. Drafty, leaky windows could lead to having higher power bills during the winter or summer months.

That’s also bad for the environment because the additional energy used by outdated windows increases your carbon footprint.

We’ve put together this list of the top installation companies to help you in your research, so you can not only take advantage of brand-new windows, but also save money on your energy bills.

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Best Availability

Renewal by Andersen

★★★★★
4.5
  • Great Industry Reputation
  • Award-winning Company
  • Member of US Green Building Council
  • Manufactures products in-house
Save $375 Off Each Window
Get Estimate

Power Home

★★★★★
4.5
  • Uses eco-friendly materials
  • Well-trained, certified installers
  • Lifetime or lengthy warranty
Next-Day Appointments Available
Get Estimate

Best for Residential Windows

Window Nation

★★★★★
4.0
  • Custom Designs
  • Wide variety of products and services
  • Manufactures products in-house

Best Window Installation & Replacement Companies in Waterbury

The EcoWatch Reviews team evaluated many window installation companies in Waterbury to find the top ones for our readers. We assessed the providers based on energy-efficient offerings, local experience, coverage area, price, customer service and more.

Renewal by Andersen logo
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
  • Pros icon Member of US Green Building Council
  • Pros icon Manufactures products in-house
Cons:
  • Pros icon No lifetime warranty
  • Pros icon More expensive than competition

Renewal by Andersen provides the best availability in Waterbury. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This provider has 27 years of experience in the windows industry, and it has established itself as one of the most reputable companies in Waterbury.

It has established itself as a company 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 Windows

Renewal by Andersen is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Waterbury?

Prices are not available on Andersen’s website because the cost of window replacement depends on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can request a free quote on its website for more information about the cost.

Window World logo
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon EnergyStar Partner
  • Pros icon Large serice area
  • Pros icon Low prices relative to competitors
  • Pros icon Great industry reputation
  • Pros icon Lifetime warranty
Cons:
  • Pros icon Quality of service will depend on your area

Window World provides windows expertise in Waterbury. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This provider has 27 years of experience in the windows industry, and it has established itself as one of the most reputable companies in Waterbury.

It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Window World is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.

How much does Window World cost in Waterbury?

Prices are not available on Window World’s website because the cost of window replacement 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 the cost.

Window Nation logo
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation provides the best residential windows in Waterbury. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This provider has 16 years of experience in the windows industry, and it has established itself as one of the most reputable companies in Waterbury.

It has established itself as a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

Window Nation is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Window Nation representative when inquiring about services.

How much does Window Nation cost in Waterbury?

Prices are not available on Window Nation’s website because the cost of window replacement depends on how many and what type(s) of windows you need. However, 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. You can request a free quote on its website for more information about the cost.

Aeroseal Windows logo
Best for Businesses

Aeroseal Windows

★★★★★
BBB Rating: A+
Locations: Regional
Founded: 1999
Pros:
  • Pros icon Many years of experience
  • Pros icon Great industry reputation
  • Pros icon Low number of customer complaints
  • Pros icon Manufactures products in-house
  • Pros icon Custom Designs
Cons:
  • Pros icon No lifetime warranty
  • Pros icon Not ideal for residential installations

Aeroseal Windows provides the best window installation for businesses in Waterbury. 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 provider has 23 years of experience in the windows industry, and it has established itself as one of the most reputable companies in Waterbury.

It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

Aeroseal Windows is an Energy Star partner and offers a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Aeroseal representative when inquiring about services.

How much does Aeroseal Windows cost in Waterbury?

Prices are not available on Aeroseal’s website because the cost of window replacement depends on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. You can request a free quote on its website for more information about the cost.

We strive to be unbiased and transparent by including pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.

More Window Companies in Waterbury

Renewal by Andersen Window Replacement

Middletown, CT
4.9
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency

Services Offered

  • Service icon Double-Hung
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Glass Doors
  • Service icon Bay Windows
  • Service icon Window Replacement/Installation
  • Service icon Vinyl Frames

Website: http://www.renewalbyandersenct.com/
Address: 54 Tuttle Pl #1, Middletown, CT 06457
Phone: (866) 337-4191

Power Home Remodeling

Trumbull, CT
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • Pros icon Free assessment
  • Pros icon Good Customer Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation

Website: https://powerhrg.com/
Address: 60 Commerce Dr Suite 150, Trumbull, CT 06611
Phone: (203) 659-4843

Window Nation

Wallingford, CT
4.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Window Replacement/Installation
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Bay Windows

Website: https://www.windownation.com/hartford-ct-showroom/
Address: 1070 N Farms Rd Unit 1, Wallingford, CT 06492
Phone: (475) 253-0015

Bert Falsetti's Home Improvement LLC

Shelton, CT
5.0
★★★★★

    Services Offered

    • Service icon Vinyl Frames
    • Service icon Energy-Efficient Options
    • Service icon Double-Hung
    • Service icon Window Replacement/Installation

    Website: http://bertfalsettillc.wix.com/falsetti
    Address: 56 Woodfield Dr, Shelton, CT 06484
    Phone: (203) 258-5177

    ZN Construction

    Canton, CT
    5.0
    ★★★★★
    • Pros icon Timely Service
    • Pros icon Price Transparency
    • Pros icon Free assessment
    • Pros icon Good Customer Service
    • Pros icon Educational Website

    Services Offered

    • Service icon Window Replacement/Installation
    • Service icon Energy-Efficient Options

    Website: http://znconstructionct.com/
    Address: 5 Albany Turnpike Unit B6, Canton, CT 06019
    Phone: (860) 318-6340

    Paramount Gallery

    West Hartford, CT
    5.0
    ★★★★★
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon Price Transparency
    • Pros icon Educational Website

    Services Offered

    • Service icon Energy-Efficient Options
    • Service icon Custom Window Designs
    • Service icon Window Replacement/Installation
    • Service icon Glass Doors

    Website: http://paramountgallery.us/
    Address: 121 Talcott Rd, West Hartford, CT 06110
    Phone: (860) 231-7884

    Window Depot USA of Southern CT

    Trumbull, CT
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Free assessment
    • Pros icon Timely Service
    • Pros icon Educational Website
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Glass Doors
    • Service icon Triple Pane Glass
    • Service icon Bay Windows
    • Service icon Window Replacement/Installation
    • Service icon Vinyl Frames
    • Service icon Energy-Efficient Options
    • Service icon Double-Hung

    Website: http://windowdepotsouthernct.com/
    Address: 5726 Main St STe 2a, Trumbull, CT 06611
    Phone: (203) 309-6027

    Big Dawg Home Improvements

    South Windsor, CT
    5.0
    ★★★★★
    • Pros icon Timely Service
    • Pros icon Good Customer Service
    • Pros icon Price Transparency
    • Pros icon Free assessment

    Services Offered

    • Service icon Window Repair
    • Service icon Energy-Efficient Options
    • Service icon Skylights
    • Service icon Window Replacement/Installation

    Website: http://bigdawghomeimprovements.com/
    Address: 658 Foster St, South Windsor, CT 06074
    Phone: (860) 477-6673

    United Home Experts

    Norwalk, CT
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Educational Website
    • Pros icon Good Customer Service
    • Pros icon Free assessment

    Services Offered

    • Service icon Fiberglass Frames
    • Service icon Window Replacement/Installation

    Website: https://unitedhomeexperts.com/united-home-experts-norwalk-ct-06854-siding-roofing-windows-doors/
    Address: 50 Washington St, Norwalk, CT 06854
    Phone: (203) 718-0597

    Budget Blinds of Enfield and Hartford

    Somers, CT
    5.0
    ★★★★★
    • Pros icon Educational Website
    • Pros icon Good Customer Service
    • Pros icon Price Transparency
    • Pros icon Free assessment

    Services Offered

    • Service icon Custom Window Designs
    • Service icon Window Replacement/Installation

    Website: https://www.budgetblinds.com/Enfield/
    Address: 21 S Rd, Somers, CT 06071
    Phone: (860) 265-3900

    Putnam Windows Inc.

    Cold Spring, NY
    5.0
    ★★★★★
    • Pros icon Educational Website
    • Pros icon Price Transparency
    • Pros icon Free assessment
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Window Replacement/Installation
    • Service icon Wood Frames
    • Service icon Glass Doors
    • Service icon Vinyl Frames

    Website: http://putnamwindows.com/
    Address: 2560 US-9, Cold Spring, NY 10516
    Phone: (845) 265-4382

    Greenwich Windows Replacement

    Greenwich, CT
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon Educational Website

    Services Offered

    • Service icon Double-Hung
    • Service icon Window Replacement/Installation
    • Service icon Bay Windows

    Website: http://www.greenwichwr.com/
    Address: 777 West Putnam Avenue, Greenwich, CT 06830
    Phone: (203) 424-3446

    Kubala Home Improvement

    Ludlow, MA
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Free assessment
    • Pros icon Educational Website

    Services Offered

    • Service icon Glass Doors
    • Service icon Window Replacement/Installation

    Website: https://kubalawindows.com/
    Address: 34 Hubbard St, Ludlow, MA 01056
    Phone: (413) 216-9175

    Flawless Glass & Mirror LLC

    Holbrook, NY
    5.0
    ★★★★★
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon Owner-operated small business
    • Pros icon Educational Website
    • Pros icon Customized glass options
    • Pros icon Price Transparency
    • Pros icon Free in-home consultation

    Services Offered

    • Service icon Window Replacement/Installation
    • Service icon Glass Showers
    • Service icon Mirrors

    Website: http://flawlessglassandmirror.com/
    Address: 1350 Lincoln Ave # 10, Holbrook, NY 11741
    Phone: (631) 275-0485

    Calvary Remodeling

    Mystic, CT
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Good Customer Service
    • Pros icon Educational Website
    • Pros icon Free assessment

    Services Offered

    • Service icon Window Replacement/Installation

    Website: https://www.calvaryremodeling.com/
    Address: 34 Greenmanville Ave, Mystic, CT 06355
    Phone: (203) 666-9326

    M & R Windows

    Bronx, NY
    5.0
    ★★★★★
    • Pros icon Timely Service
    • Pros icon Price Transparency

    Services Offered

    • Service icon Window Replacement/Installation

    Website: http://mandrwindows.com/
    Address: 4510 Bullard Ave, Bronx, NY 10470
    Phone: (718) 652-1300

    Bencar Building Systems LLC

    Wallingford, CT
    4.9
    ★★★★★
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Window Replacement/Installation

    Website: https://www.bencarbuildingsystems.com/
    Address: 210 N Plains Industrial Rd, Wallingford, CT 06492
    Phone: (203) 269-9204

    Nu-Face Home Improvements

    Berlin, CT
    4.9
    ★★★★★
    • Pros icon Educational Website
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon Timely Service
    • Pros icon Price Transparency

    Services Offered

    • Service icon Energy-Efficient Options
    • Service icon Double-Hung
    • Service icon Glass Showers
    • Service icon Glass Doors
    • Service icon Window Replacement/Installation

    Website: https://nufacect.com/
    Address: 855 Berlin Turnpike, Berlin, CT 06037
    Phone: (860) 681-3002

    Advanced Window Systems LLC

    Cromwell, CT
    4.9
    ★★★★★
    • Pros icon Educational Website
    • Pros icon Price Transparency
    • Pros icon Free assessment
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Glass Showers
    • Service icon Glass Doors
    • Service icon Bay Windows
    • Service icon Window Replacement/Installation
    • Service icon Double-Hung

    Website: https://www.advancedwindowsystems.com/
    Address: 14 Alcap Ridge, Cromwell, CT 06416
    Phone: (860) 718-4586

    MK Window Treatments

    Greenwich, CT
    4.9
    ★★★★★
    • Pros icon Good Customer Service
    • Pros icon Free assessment

    Services Offered

    • Service icon Window Replacement/Installation

    Website: http://www.mkwindowtreatments.com/
    Address: 270 Mason St, Greenwich, CT 06830
    Phone: (203) 900-1500
    Waterbury Window Cost Calculator

    Calculate how much you can expect to pay for window installation and replacement in Waterbury, CT using our customized window cost calculator.

    Estimated Window Cost:
    161 homeowners have requested a free estimate in the last 3 days.

    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 Waterbury Saves You Money

    Energy-efficient windows can offer benefits in more than one way. Here are some reasons you may want to take the plunge and make the switch:

    • Decrease your carbon footprint: Decreasing how much energy you use also lowers your carbon emissions. You could reduce it by 147 pounds per year on average.
    • Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its value, especially if your home is on the older side.
    • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, reducing fading of your furniture, carpet and other valuables.
    • Save on electricity bills: Because energy-efficient windows reduce how much energy you need to heat or cool your home, they can help you save about $420 annually on your energy bills in Waterbury.

    Estimated Cost of Window Replacement in Waterbury

    Windows come in different styles, shapes and purposes, so costs and services will differ considerably depending on several factors. Below, we go over the typical cost and services that you’ll find from window installation companies.

    How Much Do New Windows Cost?

    Even though the average cost to replace one window is about $600, it can range from $200 to $1,200. But costs will differ significantly based on the current condition of your home, your location, the number of windows you need and the quality of your products. Many window companies also offer door installations and other add-ons like coating, shutters, baths and more. Additional services will increase overall project costs.

    It’s important to keep in mind that windows with higher efficiency may cost more upfront but can save you hundreds of dollars by lowering your energy bills. Investing in certified energy-efficient windows can save Waterbury homeowners $420+ a year when replacing single-pane windows.

    We recommend getting free quotes from multiple window installers to find the right windows and the company that works best for you.

    What Services do Window Installers Offer?

    There are generally two kinds of window installation services: full-frame and pocket installations.

    Full-frame installations require replacing the entire window — the sill, frame, trim and all. These are typically done when you want to change the style of your window or when it has significant deterioration. Full-frame installations involve more time and labor and will increase overall costs. A pocket installation entails installing a new window without replacing the frame. This means instead of tearing out the whole unit and rebuilding it, the installer will just slide the replacement window (also called a retrofit or insert window) into the frame.

    Your window replacement company should be able to help you understand what’s best for your needs. In Waterbury, the decision will mostly be based on the age of your home and if there’s any moisture damage. Wood can decay if not properly maintained over the years, so it’s a good idea to have a professional assess your frames and window sills.

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    Best Availability

    Renewal by Andersen

    ★★★★★
    4.5
    • Great Industry Reputation
    • Award-winning Company
    • Member of US Green Building Council
    • Manufactures products in-house
    Save $375 Off Each Window
    Get Estimate

    Power Home

    ★★★★★
    4.5
    • Uses eco-friendly materials
    • Well-trained, certified installers
    • Lifetime or lengthy warranty
    Next-Day Appointments Available
    Get Estimate

    Best for Residential Windows

    Window Nation

    ★★★★★
    4.0
    • Custom Designs
    • Wide variety of products and services
    • Manufactures products in-house

    How We Choose the Best Window Installers in Waterbury

    EcoWatch reviews are different from most reviews, as we’re examining these companies through a sustainability lens. Along with energy efficiency, we reviewed several window installers in Waterbury and assigned rankings using the following methodology:

    Service Area

    Because this is a guide for Waterbury, we only included companies that cover the city. There are certainly other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Waterbury.

    Work Quality

    When installing new windows, the quality and variety 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 rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

    Customer Reviews

    Another self-explanatory yet very important review factor is customer feedback. If most customers don’t have positive feedback about their service from 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 try 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

    As discussed previously, windows are a considerable investment, so you’ll want to be certain that investment is protected. Window installation companies that offer lengthy warranties for products, parts and labor rank higher with EcoWatch.

    Years of Experience

    Because of Waterbury’s climate, homeowners need to be wary of rot, water damage and low efficiency. We factored in local experience to reflect the ability of Waterbury window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.

    Waterbury, CT Window Replacement FAQs

    What is the typical cost to install new windows?

    The national average cost to replace a single window is around $600 but can range from $200 to $1,200, depending on a few different factors. The price is usually dependent on the size of the window, the type and material of the window and the location of your property. Also, bear in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.

    What are the most common kinds of replacement windows?

    There are several different kinds of windows you can get for your house, including awning windows, picture windows, casement windows, slider windows, double-hung and single-hung windows, bay windows and transom windows.

    Can I replace my own windows?

    If you’re handy and know how to replace a window, you may be able to install your own windows. However, if you don’t have the time or skills, we recommend getting a professional to do it for you.

    Should I replace all my windows at the same time?

    If your windows are more than 20 years old, it’s probably time to replace all of them. By that point, they are usually less efficient, leakier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less stress.