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

Thinking about upgrading your home's windows? We’ve got you covered in this list of the top window installation companies.

We analyzed all the top-rated window companies in Glastonbury 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.

A review of the top window installation companies in Glastonbury may not seem like the most compelling article on the EcoWatch site, but trust us, windows have more of an impact on your life than you might realize. When it’s the middle of winter, your old and drafty windows could be making your home harder to heat and costing you more in power bills.

That’s also bad for the environment, as the additional energy used by damaged windows increases your carbon footprint.

As windows have such a large impact on your home, picking the right company for you is a big decision to make. That’s why the EcoWatch team has made this list of the top window installation companies, so you can more easily make an informed decision.

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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 Glastonbury

The EcoWatch team evaluated dozens of window installation companies across Glastonbury to narrow our list down to the best ones. The companies mentioned in this article scored best in our categories, including energy-efficient offerings, availability, customer service, price and more.

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 is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window business for around 27 years. The company has hundreds of glowing reviews from customers online.

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 company for you.

Energy Efficiency of Window World Windows

Its 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’re interested in Energy Star windows when inquiring.

How much does Window World cost in Glastonbury?

Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. Receiving a free quote on its website is the best way to get more accurate information.

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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window business for around 27 years. The company has hundreds of glowing reviews from customers online.

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 perfect company for you.

Energy Efficiency of Renewal by Andersen Windows

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. Not all of Andersen’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.

How much does Renewal by Andersen cost in Glastonbury?

Andersen does not outline 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. Receiving a free quote on its website is the best way to get more accurate information.

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 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. Aeroseal has been in the window business for around 23 years. The company has hundreds of glowing reviews from customers online.

If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the perfect company for you.

Energy Efficiency of Aeroseal Windows Windows

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. Not all of Aeroseal’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.

How much does Aeroseal Windows cost in Glastonbury?

Aeroseal does not outline prices on its website, but it provides high-quality windows at a competitive price point. Receiving a free quote on its website is the best way to get more accurate information.

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 is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has been in the window business for around 16 years. The company has hundreds of glowing reviews from customers online.

If you’re looking for a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms, Window Nation may be the perfect company for you.

Energy Efficiency of Window Nation Windows

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. Not all of Window Nation’s offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.

How much does Window Nation cost in Glastonbury?

Window Nation does not outline 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. Receiving a free quote on its website is the best way to get more accurate information.

Please note that the companies in this section are national, meaning the quality of the service may vary depending on your local team. We have tried to remain unbiased and transparent by listing pros and cons for each company.

More Window Companies in Glastonbury

Renewal by Andersen Window Replacement

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

Services Offered

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

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 Good Customer Service
  • Pros icon Free assessment

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 Price Transparency
  • Pros icon Free assessment

Services Offered

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

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

Paramount Gallery

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

Services Offered

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

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

Big Dawg Home Improvements

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

Services Offered

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

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

ZN Construction

Canton, CT
5.0
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Timely Service
  • 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

Budget Blinds of Enfield and Hartford

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

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

Kubala Home Improvement

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

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

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

Bert Falsetti's Home Improvement LLC

Shelton, CT
5.0
★★★★★

    Services Offered

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

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

    Window Depot USA of Southern CT

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

    Services Offered

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

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

    Closet & Storage Systems

    Auburn, MA
    5.0
    ★★★★★
    • Pros icon Educational Website
    • Pros icon Price Transparency
    • Pros icon Free assessment
    • Pros icon Good Customer Service

    Services Offered

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

    Website: http://www.closetandstoragesys.com/
    Address: 81 Pinehurst Ave, Auburn, MA 01501
    Phone: (508) 832-4044

    Couto Construction

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

    Services Offered

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

    Website: https://www.coutoconstruction.com/
    Address: 895 Post Rd, Warwick, RI 02888
    Phone: (401) 307-5699

    H & J Homes Solutions LLC

    Shrewsbury, MA
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon Educational Website

    Services Offered

    • Service icon Window Replacement/Installation

    Website: https://h-j-homes-solutions-llc.business.site/
    Address: 516 Boston Turnpike, Shrewsbury, MA 01545
    Phone: (508) 202-0097

    United Home Experts

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

    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

    Advanced Window Systems LLC

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

    Services Offered

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

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

    Nu-Face Home Improvements

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

    Services Offered

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

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

    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

    CARRIER ROOFING SIDING & WINDOWS

    Webster, MA
    4.9
    ★★★★★
    • Pros icon Good Customer Service
    • Pros icon Price Transparency
    • Pros icon Educational Website

    Services Offered

    • Service icon Window Replacement/Installation

    Website: http://www.carrierrsw.com/
    Address: 1189 School St, Webster, MA 01570
    Phone: (508) 287-0288

    Tri-State Construction Co

    Worcester, MA
    4.9
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Educational Website
    • Pros icon Free assessment
    • Pros icon Good Customer Service

    Services Offered

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

    Website: http://tristateconstruction.org/
    Address: 5 Brussels St BLDG B, Worcester, MA 01610
    Phone: (508) 751-8585
    Glastonbury Window Cost Calculator

    Calculate how much you can expect to pay for window installation and replacement in Glastonbury, 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 Glastonbury Saves You Money

    When you upgrade to energy-efficient windows, you may see several benefits, such as:

    • Protect your investment: If you have a relatively old home, your windows are most likely outdated. Updating your windows can improve the insulation in your home and also help raise the value of your home if you decide to sell.
    • Save on power bills: The Department of Energy estimates that heat gained or lost via windows accounts for around 25-30% of residential energy use. Upgrading to energy-efficient windows can help reduce that number, which helps you save $446 a year on your bills.
    • Decrease your carbon footprint: In Glastonbury, you can reduce your indirect greenhouse gas emissions by about 147 pounds per year after you upgrade to energy-efficient windows.
    • Protect your valuables from fading: When you upgrade to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out harmful UV rays.

    Estimated Cost of Window Replacement in Glastonbury

    Each window installation company offers varying services and has different prices based on a few factors.

    How Much Do New Windows Cost?

    The typical cost to install a single window is about $600 but can range from $200 to $1,200. How much it will cost depends on several factors, such as material, number of windows, size, the location of your home, type and more.

    Whether or not you want energy-efficient windows is another factor that will determine the cost. These will usually cost more than other windows, but on the other hand, you can save about $446 a year on your energy bills in Glastonbury.

    Requesting 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?

    The first step when planning a window installation is to think about whether you want a full-frame or pocket installation.

    Full-frame installations entail replacing the full window, including the sill, frame and trim. You most likely need a full-frame installation when you want a new style or your window has noticeable damage or rot. Because these installations are more involved, they will raise the overall cost. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are on the simpler end and won’t carry as large a bill, but you can’t do this kind of installment if you have any pre-existing rot or water damage.

    Your window installation company can recommend the best type for your project. In Glastonbury, the decision will mostly be influenced by the efficiency of your home and the age of your existing frames.

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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 Glastonbury

    In our search to make your home improvements easier and more eco-friendly in Glastonbury, the EcoWatch team chose the above companies as the top window installation companies in the city. We have decided to evaluate the top window installers in Glastonbury mostly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

    Service Area

    This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve Glastonbury so you can find the right window installation company near you.

    Work Quality

    We’re willing to bet that you’re looking for a company to do a great job installing windows. We’ve vetted each company on this list to make sure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.

    Customer Reviews

    Customer feedback is another super important review factor. If the majority of customers don’t have good feedback about their service from a certain installer, it won’t be featured on EcoWatch.

    Cost

    This one is a give-and-take: as with other services, cheap window installation companies won’t always provide the highest quality service. Still, we want to make sure we’re highlighting companies that offer a variety of price and financing options so they’re accessible to most homeowners.

    Warranty

    As discussed previously, windows are a sizable investment, so you’ll want to make sure that investment is well protected. Window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

    Years of Experience

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

    Glastonbury, CT Window Replacement FAQs

    How much does window installation cost?

    The average cost of replacing one window can range from $450 to $650. There are a variety of factors that affect the price, including the materials used in designing the windows, how energy-efficient the windows are, styles and sizes of windows, your property’s location, the number of windows and local labor costs.

    What are the different kinds of windows?

    There are various types of windows you can get for your house, such as picture windows, double-hung and single-hung windows, casement windows, bay windows, awning windows, slider windows and transom windows.

    Do I really have to use a window installation company?

    You should hire a window installation company whenever you want new windows. Installing windows is a complicated process that can be difficult and time-consuming, so it’s best left to the professionals.

    Should I replace all my windows at once?

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