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

If you’re thinking about upgrading to new windows, our list of the best window installation companies can help.

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

The EcoWatch team is all about finding solutions for eco-conscious homeowners in Stratford. If your windows are drafty or damaged, you could be sending 25-30% of your house’s heat or cool air right out of them.

Fortunately, helping you save money with upgraded windows also aligns with our goals of reducing energy usage for the environment.

We’ve made this guide on the best installation companies to help you in your research, so you can not only benefit from brand-new windows, but also save money on your power 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 Stratford

The EcoWatch team researched dozens of installers that service the Stratford area to find the top window installation companies that fit our standards. The providers in this article passed our review standards for energy-efficient offerings as well as customer service, local expertise, price and beyond.

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 Stratford. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the window installation industry, and it has proved to be one of the best companies in Stratford. Its reputation is backed by all the positive reviews on customer review websites.

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 provider for you.

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 be sure to ask your Window World representative when inquiring about services.

How much does Window World cost in Stratford?

Prices aren’t listed on Window World’s website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can ask for a quote on the company’s website.

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 Stratford. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has 27 years of experience in the window installation industry, and it has proved to be one of the best companies in Stratford. Its reputation is backed by all the positive reviews on customer review websites.

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 provider for you.

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 be sure to ask your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Stratford?

Prices aren’t listed on Andersen’s website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you’d like more accurate information, you can ask for a quote on the company’s website.

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 Stratford. It's an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. This company has 23 years of experience in the window installation industry, and it has proved to be one of the best companies in Stratford. Its reputation is backed by all the positive reviews on customer review websites.

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

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 be sure to ask your Aeroseal representative when inquiring about services.

How much does Aeroseal Windows cost in Stratford?

Prices aren’t listed on Aeroseal’s website, but it provides high-quality windows at a competitive price point. If you’d like more accurate information, you can ask for a quote on the company’s website.

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 Stratford. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This company has 16 years of experience in the window installation industry, and it has proved to be one of the best companies in Stratford. Its reputation is backed by all the positive reviews on customer review websites.

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 provider for you.

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 be sure to ask your Window Nation representative when inquiring about services.

How much does Window Nation cost in Stratford?

Prices aren’t listed on Window Nation’s website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. If you’d like more accurate information, you can ask for a quote on the company’s website.

We strive 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 Stratford

Renewal by Andersen - Branford

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

Services Offered

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

Website: http://www.renewalbyandersen.com/window-company/865-southern-connecticut.aspx
Address: 38 N Harbor St, Branford, CT 06405
Phone: (203) 274-8950

Power Home Remodeling

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

Services Offered

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

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

Window Depot USA of Southern CT

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

Services Offered

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

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

    United Home Experts

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

    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

    Flawless Glass & Mirror LLC

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

    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

    Greenwich Windows Replacement

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

    Services Offered

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

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

    Doors & Windows

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

    Services Offered

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

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

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

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

    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

    Putnam Windows Inc.

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

    Services Offered

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

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

    ZN Construction

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

    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

    Edge Remodeling, Inc.

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

    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 Price Transparency
    • Pros icon Free assessment

    Services Offered

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

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

    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 Window Replacement/Installation
    • Service icon Energy-Efficient Options

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

    Cityproof Soundproof Windows

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

    Services Offered

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

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

    Big Dawg Home Improvements

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

    Services Offered

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

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

    Smithtown Window Replacement and Doors

    Smithtown, NY
    4.9
    ★★★★★
    • Pros icon Good Customer Service
    • Pros icon Energy-efficient windows and doors
    • Pros icon Family-owned and operated
    • Pros icon Weekend availability
    • Pros icon Price Transparency
    • Pros icon Free assessment
    • Pros icon Educational Website

    Services Offered

    • Service icon Double-Hung
    • Service icon Wood Frames
    • Service icon Metal Frames
    • Service icon Energy-Efficient Options
    • Service icon Glass Showers
    • Service icon Triple Pane Glass
    • Service icon Fiberglass Frames
    • Service icon Window Replacement/Installation
    • Service icon Window Repair
    • Service icon Bay Windows
    • Service icon Storm/Impact Windows
    • Service icon Glass Doors
    • Service icon Tempered Glass
    • Service icon Vinyl Frames
    • Service icon Custom Window Designs

    Website: https://smithtownwindowsdoors.com/
    Address: 43 Landing Ave, Smithtown, NY 11787
    Phone: (631) 646-2386

    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
    Stratford Window Cost Calculator

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

    There are quite a few benefits of switching to energy-efficient windows. Some reasons you may want to consider making the switch are the following:

    • Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
    • Protect your investment: When you have an older home, your windows could also be outdated or leaky. Upgrading your windows is an important part of maintaining your property and its value.
    • Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your house, you can cut your carbon footprint by about 12%, according to Energy Star.
    • Save money on electricity bills: After you install 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 home.

    Estimated Cost of Window Replacement in Stratford

    Windows come in varying styles, purposes and shapes, so costs and services will vary tremendously based on several factors. Below, we detail the typical cost and services that you’ll find from window installers.

    How Much Do New Windows Cost?

    The typical cost to install a single window is about $600 but can range anywhere from $200 to $1,200. But costs will differ significantly depending on the number of windows you need, your location, the quality of your products and the current condition of your home. Many window companies also offer replacement door installations and other add-ons like shutters, coating, baths and more. Additional services will increase your overall project costs.

    It’s also worth keeping in mind that energy-efficient windows will almost always cost more initially, but Energy Star estimates that upgrading the windows on your Stratford home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 each year for double-pane windows. How much you’ll save by switching to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.

    Getting free quotes from multiple installers is the best way to figure out which one will work best for your budget.

    What Services do Window Installers Offer?

    The first step of a window installation is to decide whether you need a full-frame or pocket installation.

    A full-frame installation replaces the full window, including the windowsill, frame, trim and the window panes. Because this kind of installation requires more time, it will be more expensive than a pocket installation. Pocket installations (also known as retrofits) are when you replace a window while leaving the existing frame. Pocket installations are on the simpler end and won’t carry as large a bill, but you can’t do this type of installment if you have any pre-existing rot or water damage.

    If you’re still trying to decide which type of installation you should get, you can talk to your provider and get their advice. The choice mostly depends on the age of your window frames and if there’s any damage.

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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 Stratford

    EcoWatch is different from other reviewers since we’re examining these companies through a sustainability lens. We’ve evaluated the top window installers in Stratford mostly based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows can lower electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:

    Service Area

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

    Work Quality

    When choosing new windows, the quality and variety of services can often play just as important of a role in insulation and performance as the brand you choose. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.

    Customer Reviews

    Customer feedback is another very important review factor. If the majority of customers don’t have nice feedback about their service from a certain window installation company, it won’t be featured on EcoWatch.

    Cost

    Cheaper windows don’t necessarily mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing providers’ prices, we awarded higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.

    Warranty

    Protecting your investment in new windows is important to many homeowners. That’s why window installation companies that offer lengthy warranties for products, parts and labor rank higher with EcoWatch.

    Years of Experience

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

    Stratford, CT Window Replacement FAQs

    How much does window installation cost?

    The national average cost of replacing a single window is about $600 but can range between $200 and $1,200, based on several factors. The price is usually dependent on the type and material of the window, the size of the window and the location of your property. Also, keep in mind that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.

    Which type of window is the best?

    A window’s energy efficiency depends on a number of factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are usually the most energy-efficient since they are certified by the U.S. Department of Energy.

    What services do window replacement companies do?

    Window installation companies cover the entire process — from replacing your old windows with brand-new ones to cleaning up afterward. Additionally, many companies offer window manufacturing, customization and repairs.

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

    Windows typically have a lifespan of about 20 to 30 years, but anytime you see damage on your windows, it’s a good time to have them checked by an expert to see if they need any repairs or replacements.

    Should I replace all my windows at the same time?

    If you want to get more efficient windows and save money on energy costs, replacing all your windows at the same time is the only way to gain that benefit. However, if you have only a few windows that are damaged or drafty, you can replace just those.