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

Thinking about replacing your windows? We’ve got all the information you need in this list of the best window installation companies.

We analyzed all the top-rated window companies in Willimantic 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 replacement companies in Willimantic may not seem like the most interesting article on the EcoWatch site, but trust us, windows have more of an impact on your life than you might think. According to the Department of Energy, heat gained or lost through outdated, drafty windows could make up 25-30% of heating and cooling costs.

Installing upgraded, efficient windows on your house can help you save money every month on your power bills — and you can help the environment, too.

We’ve made a list of the best 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 electricity 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 Willimantic

The EcoWatch team assessed several window installation companies across Willimantic to narrow our list down to the top ones. We assessed the companies based on energy-efficient offerings, local experience, price, customer service, coverage area 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 provides windows expertise in Willimantic. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has around 27 years of experience in the window installation business. The company has a lot 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, this may be the perfect company for you.

Energy Efficiency of Window World Windows

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

How much does Window World cost in Willimantic?

While pricing is not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. Getting 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 provides the best availability in Willimantic. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the window installation business. The company has a lot 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, this may be the perfect company for you.

Energy Efficiency of Renewal by Andersen Windows

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

How much does Renewal by Andersen cost in Willimantic?

While pricing is not readily available on Andersen’s website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Getting 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 provides the best window installation for businesses in Willimantic. 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. Aeroseal has around 23 years of experience in the window installation business. The company has a lot 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, this may be the perfect company for you.

Energy Efficiency of Aeroseal Windows Windows

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

How much does Aeroseal Windows cost in Willimantic?

While pricing is not readily available on Aeroseal’s website, it provides high-quality windows at a competitive price point. Getting 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 provides the best residential windows in Willimantic. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has around 16 years of experience in the window installation business. The company has a lot 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, this may be the perfect company for you.

Energy Efficiency of Window Nation Windows

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

How much does Window Nation cost in Willimantic?

While pricing is not readily 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. Getting a free quote on its website is the best way to get more accurate information.

We have tried to stay unbiased and transparent by describing pros and cons for each provider. Additionally, any partnerships do not influence our reviews.

More Window Companies in Willimantic

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

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 Good Customer Service
  • Pros icon Timely Service
  • Pros icon Free assessment

Services Offered

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

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 Free assessment
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

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

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

DaBella

Westborough, MA
4.5
★★★★★
  • Pros icon Transferable warranties
  • Pros icon Alside® vinyl windows
  • Pros icon Timely Service
  • Pros icon family_owned
  • Pros icon Good Customer Service

Services Offered

  • Service icon Vinyl Frames
  • Service icon Window Replacement/Installation
  • Service icon Glass Doors
  • Service icon Double-Hung

Website: https://dabella.us/location/westborough/
Address: 110 Turnpike Rd Suite 108, Westborough, MA 01581
Phone: (508) 594-3633

Big Dawg Home Improvements

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

Services Offered

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

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

Budget Blinds of Enfield and Hartford

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

Services Offered

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

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

Paramount Gallery

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

Services Offered

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

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

Calvary Remodeling

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

Services Offered

  • Service icon Window Replacement/Installation

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

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

ZN Construction

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

Services Offered

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

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

Closet & Storage Systems

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

Services Offered

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

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

Couto Construction

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

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 Educational Website
  • Pros icon Free assessment

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

N.E. Building & Restoration LLC

Attleboro, MA
5.0
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment

Services Offered

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

Website: https://nebrpros.com/
Address: 141 Downing Dr, Attleboro, MA 02703
Phone: (508) 202-1884

Bert Falsetti's Home Improvement LLC

Shelton, CT
5.0
★★★★★

    Services Offered

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

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

    Rogers Insulation Specialists

    Framingham, MA
    5.0
    ★★★★★
    • Pros icon Free assessment
    • Pros icon Good Customer Service
    • Pros icon Timely Service
    • Pros icon Price Transparency

    Services Offered

    • Service icon Window Replacement/Installation
    • Service icon Energy-Efficient Options
    • Service icon Triple Pane Glass

    Website: https://www.rogersinsulation.com/
    Address: 225 Arlington St Suite G, Framingham, MA 01702
    Phone: (508) 875-3700

    Window Depot USA of Southern CT

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

    Services Offered

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

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

    Advanced Window Systems LLC

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

    Services Offered

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

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

    CARRIER ROOFING SIDING & WINDOWS

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

    Services Offered

    • Service icon Window Replacement/Installation

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

    Nu-Face Home Improvements

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

    Services Offered

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

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

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

    By switching to energy-efficient windows, you can benefit in several ways, including:

    • Reduce your carbon footprint: Because energy-efficient windows improve the insulation in your house, you can reduce your carbon footprint by about 12%, according to Energy Star.
    • Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its value, particularly if you have an older home.
    • Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
    • Save on electricity bills: The Department of Energy estimates that heat gained or lost through windows makes up about 25-30% of energy use in your home. Switching to energy-efficient windows can help decrease that number, which helps you save $457 a year on your bills.

    Estimated Cost of Window Replacement in Willimantic

    Each window replacement company offers varying services and has varying price points based on a few factors.

    How Much Do New Windows Cost?

    Typically, Willimantic homeowners can expect their window replacements to range from $250 to $1,200. The average cost is at approximately $600. How much it will cost varies depending on several factors, including the location of your home, material, size, type, number of windows and more.

    Bear in mind that energy-efficient windows may come at a higher price point, but Energy Star predicts the upgrade will save you between $101 and $583 per year when installing single-pane windows and between $27 and $197 per year when installing double-pane, clear glass windows. Your exact savings will vary based on your local climate, energy rates and individual home characteristics.

    Costs will also vary depending on the material you choose for your window frames. Aluminum frames cost the least. They’re sturdy, light and maintenance-free, but offer poor insulation. Vinyl frames are somewhat expensive and provide good insulation. Composite frames made from wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They’re also aesthetically pleasing and provide decent insulation for your home.

    What Services do Window Installers Offer?

    In general, there are two types of window installation services you can get: full-frame and pocket installations.

    Full-frame installations are necessary when you want a new style or your window has a lot of rot. With this service, your installers will replace the complete window, including the trim, frame and sill. A pocket installation means replacing a window within the existing frame, which tends to be cheaper than a full-frame installation.

    If you’re hiring a reputable window installation company, your company can advise you on the best type for your project. In Willimantic, the decision will mostly be influenced by the efficiency of your home and how old your existing frames are.

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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 Willimantic

    In our search to make your home improvements easier and more eco-friendly in Willimantic, the EcoWatch team chose the above companies as the top window installation companies in the city. Along with energy efficiency, we reviewed each installer and assigned rankings using the following methodology:

    Service Area

    Because this is a guide for Willimantic, we paid more attention to companies that cover the city. There are other reputable providers that didn’t make the cut because they wouldn’t be able to serve homeowners in Willimantic.

    Work Quality

    We’re willing to bet that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each company featured in our guide 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

    We analyzed trends in recent customer feedback to determine the companies with the most customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across most other categories, including quality of parts, cost, professionalism, warranty, quality of installation and more.

    Cost

    This one is a give-and-take: as with most services, cheap window installation companies are not going to provide the highest quality service. Still, we want to ensure we’re highlighting companies that offer a range of price and financing options so they’re accessible to most homeowners.

    Warranty

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

    Years of Experience

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

    Willimantic, CT Window Replacement FAQs

    What is the typical cost to replace windows in a home?

    The national average cost to install one window is about $600 but can range from $200 to $1,200, based on a few different factors. The price is often influenced by the type and material of the window, the location of your property and the size of the window. Also, remember that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.

    What are the most common types of replacement windows?

    The most common types of windows for homes are awning windows, picture windows, double-hung and single-hung windows, bay windows, casement windows, slider windows and transom windows.

    Can you replace your own windows?

    Even though it is possible to install your own windows, doing so requires a lot of time and experience with home improvement projects. Hiring a professional can help ensure that the installation is done properly and that you can avoid spending the time and effort of doing it yourself.

    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 typically less efficient, leakier and/or more damaged than new windows. Doing your windows all at the same time will involve less paperwork and less time.

    How long does it usually take to install windows?

    Each window takes around 30 minutes to install depending 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.