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

If you’re thinking about getting new windows, our guide to the top window installation companies can help.

We analyzed all the top-rated window companies in Wilton 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 guide on the top window replacement companies in Wilton may not seem like the most compelling article on EcoWatch, but trust us, windows have more of an impact on your life than you might think. According to the Department of Energy, heat or cool air lost through outdated, drafty windows could represent 25-30% of heating and cooling use.

Fortunately, helping you save energy with more efficient windows also aligns with our goals of conserving energy and the resources it takes to make it.

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

The EcoWatch team examined many window companies in Wilton to find the top ones for our readers. We assessed the providers based on energy-efficient offerings, coverage area, price, local experience, customer service 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 has windows expertise in Wilton. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has about 27 years of experience in the windows industry, and it currently provides services to 200 locations nationwide.

Window World may be the company for you if you're looking for one 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 has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make 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 Wilton?

Though pricing is not readily available on Window World’s website, it's known for offering some of the most affordable window installations around. You can ask for a free quote on its website for more information about pricing.

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 has the best availability in Wilton. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia.

Andersen may be the company for you if you're looking for one 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 has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make 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 Wilton?

Though 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. You can ask for a free quote on its website for more information about pricing.

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 has the best window installation for businesses in Wilton. 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 about 23 years of experience in the windows industry, and it currently provides services to 13 states and Washington D.C.

Aeroseal may be the company for you if you're looking for one 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 has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Aeroseal representative when inquiring about services.

How much does Aeroseal Windows cost in Wilton?

Though pricing is not readily available on Aeroseal’s website, it provides high-quality windows at a competitive price point. You can ask for a free quote on its website for more information about pricing.

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 has the best residential windows in Wilton. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has about 16 years of experience in the windows industry, and it currently provides services to residents within 75 miles of its showrooms, which are in 13 states.

Window Nation may be the company for you if you're looking for one that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation 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 make 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 Wilton?

Though 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. You can ask for a free quote on its website for more information about pricing.

We aim to stay unbiased and transparent by mentioning pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.

More Window Companies in Wilton

Renewal by Andersen of Long Island

Farmingdale, NY
4.9
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

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

Website: https://www.renewalbyandersen.com/window-company/800-long-island-ny/retailer
Address: 2029 New Hwy, Farmingdale, NY 11735
Phone: (631) 843-1713

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

Services Offered

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

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

United Home Experts

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

Services Offered

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

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

Window Depot USA of Southern CT

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

Services Offered

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

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

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

    Greenwich Windows Replacement

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

    Services Offered

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

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

    Putnam Windows Inc.

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

    Services Offered

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

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

    M & R Windows

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

    Services Offered

    • Service icon Window Replacement/Installation

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

    Doors & Windows

    Albertson, NY
    5.0
    ★★★★★
    • Pros icon Online product shopping
    • Pros icon Price Transparency
    • Pros icon Educational Website
    • Pros icon Sunday availability
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon Free in-home or virtual consultation

    Services Offered

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

    Website: http://usdoorswindows.com/
    Address: 830 Willis Ave, Albertson, NY 11507
    Phone: (516) 517-4328

    Flawless Glass & Mirror LLC

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

    Services Offered

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

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

    Aspen Home Remodeling, LLC.

    Oradell, NJ
    5.0
    ★★★★★
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon Price Transparency
    • Pros icon Educational Website

    Services Offered

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

    Website: https://www.aspenhomeremodelingllc.com/
    Address: 700 Kinderkamack Rd #101, Oradell, NJ 07649
    Phone: (201) 994-5354

    Edge Remodeling, Inc.

    Franklin Square, NY
    5.0
    ★★★★★
    • Pros icon Family-owned and operated
    • Pros icon Good Customer Service
    • Pros icon Price Transparency
    • Pros icon Labor warranties available
    • Pros icon Free assessment
    • Pros icon Free same-day estimates

    Services Offered

    • Service icon Window Replacement/Installation

    Website: http://edgeremodelinginc.com/
    Address: 1102 Hempstead Turnpike, Franklin Square, NY 11010
    Phone: (516) 860-8630

    Parco Home Improvement Corp.

    Franklin Square, NY
    5.0
    ★★★★★
    • Pros icon Free assessment
    • Pros icon Price Transparency

    Services Offered

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

    Website: http://www.kpsearch.com/DF/Parco/all.asp
    Address: 424 Dogwood Ave, Franklin Square, NY 11010
    Phone: (516) 560-7626

    HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry

    Hasbrouck Heights, NJ
    5.0
    ★★★★★
    • Pros icon Saturday and Sunday availability
    • Pros icon 24-hour emergency service
    • Pros icon Price Transparency
    • Pros icon Educational Website
    • Pros icon Free in-home consultation
    • Pros icon Free assessment
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Window Replacement/Installation

    Website: http://www.hdlconstructionnj.com/
    Address: 184 Boulevard Apt A, Hasbrouck Heights, NJ 07604
    Phone: (201) 375-5437

    Cityproof Soundproof Windows

    Long Island City, NY
    5.0
    ★★★★★
    • Pros icon Price Transparency
    • Pros icon Trademark soundproof Citiwindows
    • Pros icon Educational Website
    • Pros icon Over 50,000 installations completed
    • Pros icon Good Customer Service
    • Pros icon Free assessment
    • Pros icon No-construction services available
    • Pros icon Timely Service

    Services Offered

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

    Website: https://www.cityproof.com/
    Address: 10-11 43rd Ave, Long Island City, NY 11101
    Phone: (718) 786-1600

    Frank Conforti Contracting

    North Haledon, NJ
    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 Energy-Efficient Options
    • Service icon Window Repair
    • Service icon Skylights

    Website: https://confortiroofingnj.com/
    Address: 84 Walray Ave, North Haledon, NJ 07508
    Phone: (973) 519-2126

    F5 Remodeling

    Rutherford, NJ
    5.0
    ★★★★★
    • Pros icon Educational Website
    • Pros icon Free assessment
    • Pros icon Family-owned and operated
    • Pros icon Good Customer Service
    • Pros icon Minority-owned and operated
    • Pros icon Price Transparency
    • Pros icon Full-service installation

    Services Offered

    • Service icon Window Replacement/Installation

    Website: https://f5remodeling.com/
    Address: 8 Station Square #2, Rutherford, NJ 07070
    Phone: (551) 271-0650

    MK Window Treatments

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

    Services Offered

    • Service icon Window Replacement/Installation

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

    Westchester Window

    Thornwood, NY
    4.9
    ★★★★★
    • Pros icon Good Customer Service

    Services Offered

    • Service icon Wood Frames
    • Service icon Glass Doors
    • Service icon Energy-Efficient Options
    • Service icon Window Replacement/Installation

    Website: http://www.westchesterwindow.com/
    Address: 51 Kensico Rd b, Thornwood, NY 10594
    Phone: (914) 310-4421
    Wilton Window Cost Calculator

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

    Energy-efficient windows can benefit you in more than one way. Here are some reasons you may want to make the switch:

    • Protect your investment: The older your home is, the more likely it is that getting new windows will benefit you. Older homes usually have windows that are outdated, leaky or maybe even damaged in some way. Upgrading your windows could help raise the value of your home if you decide to sell.
    • Save on electricity bills: Once you switch to energy-efficient windows, you can expect a reduction in your bills by about 12% because you’ll use less energy to heat or cool your house.
    • Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
    • Decrease your carbon footprint: By using less energy once upgrading to Energy Star certified windows, you’ll also be cutting your carbon dioxide emissions by about 12%, according to Energy Star.

    Estimated Cost of Window Replacement in Wilton

    When researching window installation, each company offers varying services and prices. Let’s go over some typical costs and services.

    How Much Do New Windows Cost?

    Generally, Wilton homeowners can expect their window replacements to range from $250 to $1,200. The average cost is at about $600. But prices vary remarkably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also offer door installations, which will add extra costs to your project.

    It’s also worth bearing in mind that energy-efficient windows will typically cost more upfront, but Energy Star estimates that upgrading the windows on your Wilton home translates to an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 per year for double-pane windows. The amount of money you’ll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

    How much your window installation costs will also vary based on the kind of material you choose for the frames. Wood windows are usually the most expensive, though it depends on whether they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.

    What Services do Window Installers Offer?

    The first question to ask yourself when planning to replace your windows is: Do you want a full-frame installation or a pocket installation?

    A full-frame installation is a replacement of the full window. It involves removing the old window, the windowsill, and the exterior and interior trim. It can also involve other materials, like insulation and drip edges, which raise the total cost of the project. It’s also worth noting that you may have to touch up the paint surrounding the window after a full-frame installation. A pocket installation entails replacing a window without replacing the frame. So, instead of taking out the whole window and reinstalling it, the contractor will just slide the replacement window (also called a retrofit or insert window) into the frame.

    If you’re not sure which kind of window installation service you need, your installer can advise you. Generally, the choice is based on factors like the age and condition of the home, the type of building material, budget and time restrictions.

    Advertisement

    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 Wilton

    EcoWatch reviews differ from other reviews, as we evaluate these companies through a sustainability lens. We have evaluated the top window installation companies in Wilton primarily based on their energy efficient offerings, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows have been shown to cut your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:

    Service Area

    Because this is a guide for Wilton, we paid more attention to companies that provide services to the city. There are other reputable providers that didn’t make our list because of the low odds that they would serve the average homeowner in Wilton.

    Work Quality

    We’re certain that you’re looking for professionals who 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 a lot of positive customer feedback to vouch for its service.

    Customer Reviews

    We analyzed patterns in recent online reviews to determine the companies with the most consistent customer satisfaction. Customer satisfaction might be the factor we place the most value on, as it reflects the quality of services across nearly every category, including quality of installation, warranty, cost, professionalism, quality of parts and more.

    Cost

    Cheaper windows certainly don’t mean better windows, but we know many of our readers try 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

    As discussed previously, windows are a considerable 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 labor rank higher with EcoWatch.

    Years of Experience

    Lastly, we like to see companies that have a good track record in the industry. 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.

    Wilton, CT Window Replacement FAQs

    How much does a window install cost?

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

    What are the most common types of replacement windows?

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

    Do you really have to use a window installation company?

    You should hire a window installation professional whenever you want new windows. Installing windows is a complicated process that can be difficult to do on your own, so it’s best left to the professionals.

    How do you know it’s time to replace your windows?

    Windows usually have a lifespan of around 20 to 30 years, but anytime you notice damage on your windows, it’s a good idea to have an expert take a look at them to see if they need any repairs or replacements.