20 Best Window Companies in Newtown, CT (2024 Reviews)

When it’s time to replace your windows, our guide to the top window installation companies can help you find the right provider for you.

We analyzed all the top-rated window companies in Newtown 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 February 01, 2024

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 Newtown may not seem like the most riveting article on EcoWatch, but trust us, windows have more of an impact on your life than you might think. Traditional or damaged windows can cost you in energy bills. As a matter of fact, the Department of Energy estimates that 25-30% of your home’s heat or cool air could be lost through your windows.

Replacement windows improve the insulation in your home, not only making you and your family more comfortable during the summer and winter, but also saving you some money and helping the environment.

As windows are so important for your home, selecting the right company for you is a big choice to make. That’s why the EcoWatch team has put together this list of the best window installation companies, so you can more easily make an informed decision.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

Best Window Installation & Replacement Companies in Newtown

The EcoWatch Reviews team evaluated dozens of installers in Newtown to find the top window companies for our readers. The companies we’ve mentioned in this article passed our review standards for energy-efficient offerings as well as price, customer service, local expertise and beyond.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
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. This window installation company has been in business since 1995 and currently services nearly every state except Mississippi and West Virginia.

You may want to consider going with Andersen if you're looking for a installer 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

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 windows 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 Newtown?

Andersen doesn’t have any prices available 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. If you’d like to know for sure, you can request a quote on the company’s website.

Window World logo
FAST QUOTE
as little as 30 seconds
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. This window installation company has been in business since 1995 and currently services 200 locations nationwide.

You may want to consider going with Window World if you're looking for a installer 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

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 windows 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 Newtown?

Window World doesn’t have any prices available on its website, but it's known for offering some of the most affordable window installations around. If you’d like to know for sure, you can request a quote on the company’s website.

Window Nation logo
FAST QUOTE
as little as 30 seconds
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. This window installation company has been in business since 2006 and currently services residents within 75 miles of its showrooms, which are in 13 states.

You may want to consider going with Window Nation if you're looking for a installer 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

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 windows 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 Newtown?

Window Nation doesn’t have any prices available 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. If you’d like to know for sure, you can request a quote on the company’s website.

Aeroseal Windows logo
FAST QUOTE
as little as 30 seconds
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. This window installation company has been in business since 1999 and currently services 13 states and Washington D.C.

You may want to consider going with Aeroseal if you're looking for a installer that installs windows and doors at businesses across the Eastern U.S.

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 windows 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 Newtown?

Aeroseal doesn’t have any prices available on its website, but it provides high-quality windows at a competitive price point. If you’d like to know for sure, you can request a quote on the company’s website.

We’ve recommended installers with shining reputations, but bear in mind that these are national companies, so the quality of service may vary depending on your local crew. We have tried to be unbiased and transparent by listing pros and cons for each company reviewed.

More Window Companies in Newtown

Renewal by Andersen - Branford

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

Services Offered

  • Service icon Bay Windows
  • Service icon Commercial Windows
  • Service icon Sliding Glass Doors
  • Service icon Andersen
  • Service icon Window Install & Replacement
  • Service icon Skylights

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

Window World of the Hudson Valley

Wappingers Falls, NY
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency

Services Offered

  • Service icon Fiberglass Frames
  • Service icon Sliding Glass Doors
  • Service icon Bay Windows
  • Service icon Window Install & Replacement
  • Service icon Energy-Efficient Options

Website: https://www.windowworldhudsonvalley.com/
Address: 1315 US-9 #201, Wappingers Falls, NY 12590
Phone: (845) 595-8200

Window Nation

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

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Fiberglass Frames
  • Service icon Sliding Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Bay Windows

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

Bert Falsetti's Home Improvement LLC

Shelton, CT
5.0
★★★★★
  • 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 Window Install & Replacement
  • Service icon Vinyl Frames
  • Service icon Sliding Glass Doors
  • Service icon Energy-Efficient Options

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 Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Timely Service
  • Pros icon Educational Website

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Triple Pane Glass
  • Service icon Vinyl Frames
  • Service icon Sliding Glass Doors
  • Service icon Energy-Efficient Options
  • Service icon Bay Windows
  • Service icon Andersen
  • Service icon Fiberglass Frames

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

Woodbury Supply Company, Inc.

Oxford, CT
3.1
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Marvin
  • Service icon Velux
  • Service icon Skylights
  • Service icon Energy-Efficient Options
  • Service icon Window Install & Replacement

Website: https://www.woodburysupply.com/
Address: 103 Willenbrock Rd, Oxford, CT 06478
Phone: (800) 562-9679

Exterior Works, LLC.

Monroe, CT
2.9
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Timely Service

Services Offered

  • Service icon Aluminum Frames
  • Service icon Window Install & Replacement
  • Service icon Window Repair

Website: https://www.exteriorworks.com/
Address: 601 Main St, Monroe, CT 06468
Phone: (203) 673-4798

Naugatuck Window & Glass

Naugatuck, CT
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Glass Doors
  • Service icon Window Install & Replacement
  • Service icon Commercial Windows
  • Service icon Window Repair
  • Service icon Skylights

Website: http://www.naugatuckwindowandglass.com/
Address: 253 Prospect St, Naugatuck, CT 06770
Phone: (203) 729-4536

Superior Windowland

Newtown, CT
2.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Free assessment
  • Pros icon Educational Website

Services Offered

  • Service icon Glass Showers
  • Service icon Window Install & Replacement

Website: https://superiorwindowland.com/
Address: 3 Simm Ln, Newtown, CT 06470
Phone: (203) 479-9703

Town & Country Glass Shop llc | Custom Shower Door & Window Supplier

Woodbury, CT
3.4
★★★★★
  • Pros icon Good Customer Service
  • Pros icon Free assessment
  • Pros icon Educational Website
  • Pros icon Price Transparency

Services Offered

  • Service icon Mirrors
  • Service icon Window Install & Replacement
  • Service icon Glass Showers

Website: http://townandcountryglassshop.com/
Address: 244 Main St N, Woodbury, CT 06798
Phone: (203) 263-4527

Tactical Construction Services

Danbury, CT
2.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Energy-Efficient Options
  • Service icon Window Repair
  • Service icon Aluminum Frames

Website: http://tacticalconstructionsvcs.com/
Address: 46 Federal Rd, Danbury, CT 06810
Phone: (800) 816-4501

Pella Windows & Doors of Norwalk

Norwalk, CT
4.8
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Sliding Glass Doors
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Pella
  • Service icon Fiberglass Frames
  • Service icon Storm Doors
  • Service icon Window Repair
  • Service icon Window Install & Replacement
  • Service icon Bay Windows
  • Service icon Glass Doors

Website: https://www.pellabranch.com/hartford/showrooms/norwalk/
Address: 464 Main Ave, Norwalk, CT 06851
Phone: (203) 846-9450

Glass Guys

Ridgefield, CT
3.0
★★★★★
  • Pros icon Price Transparency

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Install & Replacement
  • Service icon Glass Showers
  • Service icon Mirrors
  • Service icon Window Repair

Website: https://www.glass-guys.com/
Address: 4 Danbury Rd, Ridgefield, CT 06877
Phone: (203) 431-7022

Home Services at The Home Depot

New Milford, CT
2.7
★★★★★
  • Pros icon Educational Website
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Free assessment

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Window Repair
  • Service icon Glass Showers

Website: https://www.homedepot.com/l/New-Milford/CT/New-Milford/06776/4878/services
Address: 104 Danbury Rd, New Milford, CT 06776
Phone: (860) 317-0153

HPM Craftsmen

Holmes, NY
4.6
★★★★★
  • Pros icon Free assessment
  • Pros icon Good Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website

Services Offered

  • Service icon Window Install & Replacement

Website: https://www.hpmcraftsmen.com/
Address: 5 Milltown Rd Suite A, Holmes, NY 12531
Phone: (845) 878-3004

Oronoque Home Improvement Llc

Stratford, CT
2.8
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website
  • Pros icon Free assessment

Services Offered

  • Service icon Glass Showers
  • Service icon Window Repair
  • Service icon Window Install & Replacement

Website: http://www.oronoquehomeimprovement.com/
Address: 142a Balbone Ln, Stratford, CT 06614
Phone: (203) 375-7495

Bencar Building Systems LLC

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

Services Offered

  • Service icon Window Install & Replacement
  • Service icon Glass Showers

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

Santos Construction Group

Stratford, CT
3.3
★★★★★
  • Pros icon Free assessment
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Educational Website

Services Offered

  • Service icon Commercial Windows
  • Service icon Window Repair
  • Service icon Window Install & Replacement

Website: http://santosconstructiongroup.com/
Address: 542 Honeyspot Rd, Stratford, CT 06615
Phone: (203) 909-5810

J.C. Tonnotti Window Company

Southington, CT
4.8
★★★★★
  • Pros icon Educational Website
  • Pros icon Good Customer Service
  • Pros icon Timely Service

Services Offered

  • Service icon Energy-Efficient Options
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Window Install & Replacement

Website: http://www.jctonnotti.com/
Address: 205 Bristol St, Southington, CT 06489
Phone: (860) 621-1642

Jilco Window Corp.

Granite Springs, NY
4.7
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service

Services Offered

  • Service icon Marvin
  • Service icon Window Install & Replacement
  • Service icon Skylights
  • Service icon Kolbe
  • Service icon Andersen
  • Service icon Aluminum Frames
  • Service icon Ply Gem
  • Service icon Commercial Windows
  • Service icon Vinyl Frames
  • Service icon Velux

Website: https://www.jilcowindow.com/
Address: 135 Mahopac Ave, Granite Springs, NY 10527
Phone: (914) 248-6100
Newtown Window Cost Calculator

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

When you switch to energy-efficient windows, you may see a few benefits, such as:

  • Protect your investment: If you have a relatively old home, your windows are most likely outdated. Updating your windows can make your home more comfortable and also help raise the value of your home if you decide to sell.
  • Protect your valuables: Many energy-efficient windows have low-emissivity coatings, which not only provide better insulation for your home, but also filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
  • Decrease your carbon footprint: By using less energy once switching to Energy Star certified windows, you’ll also be reducing your indirect greenhouse gas emissions by about 12%, according to Energy Star.
  • Save money on power bills: Once you upgrade to energy-efficient windows, you can expect a reduction in your bills by about 12% because you’ll require less energy to heat or cool your home.

Estimated Cost of Window Replacement in Newtown

Windows come in all shapes and sizes, so costs and services will vary remarkably. Here are the typical costs and services that you can find from the average window installation company.

How Much Do New Windows Cost?

On average, homeowners in Newtown can anticipate that most replacement window installations will cost between $250 and $1,200, with the most common installations sitting at about $600. But costs differ remarkably based on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window installers also offer door replacements, which will add extra costs to your project.

Keep in mind that energy-efficient windows may cost more, but Energy Star predicts the upgrade will save you between $101 and $583 a year when replacing single-pane windows and between $27 and $197 a year when you replace double-pane, clear glass windows. Your savings will vary depending on your local climate, energy rates and individual home characteristics.

Something else that influences the overall cost is the material of the frame you select. Aluminum frames are typically the least pricey and are sturdy and relatively maintenance-free, but they provide poor insulation. On the other hand, wood frames are the most expensive, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.

What Services do Window Installers Offer?

Generally, there are two kinds of window installation services you can get: full-frame and pocket installations.

A full-frame installation replaces the total window, such as the sill, frame, trim and the window panes. Because this kind of installation requires more time and labor, it will cost more than a pocket installation. Pocket installations are on the simpler end and won’t carry as large a bill because they entail merely replacing the window within its existing frame. But if the frame has any damage or deterioration, you may have to get a full-frame installation instead.

Your window installation company can recommend the best type for your project. In Newtown, the decision will mostly be based on how much damage there is currently and the condition of your existing frames.

Best Availability

Renewal by Andersen

★★★★★
4.5

  • Great industry reputation
  • Member of US Green Building Council
  • Manufactures products in-house

Best Energy-Efficient Features

Champion

★★★★★
4.5

  • Many years of experience
  • Low prices relative to competitors
  • Limetime warranty

Window Veteran

Window World

★★★★★
4.5

  • EnergyStar Partner
  • Wide variety of products and services
  • Lifetime Warranty

How We Choose the Best Window Installers in Newtown

EcoWatch reviews are different from other reviews, as we look at these companies through a sustainability lens. We have reviewed the top window replacement companies in Newtown mostly based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy Star certified windows have been shown to lower power bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:

Service Area

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

Work Quality

When it comes to new windows, the quality and breadth of services often plays just as important of a role in overall efficiency and performance as the brand of window you choose. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.

Customer Reviews

We analyzed trends in recent customer feedback to find the companies with the most consistent customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it indicates the quality of services across most other categories, including warranty, quality of parts, professionalism, cost, quality of installation 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 awarded higher scores 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 provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Last but not least, we like to see companies that have a proven track record in the industry. Window installation companies that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.

Newtown, CT Window Replacement FAQs

How much does a window install cost?

The national average cost of installing a window is about $600 but can range from $200 to $1,200, based on several factors. The price is often influenced by the location of your property, the type and material of the window and the size of the window. Also, bear in mind that energy-efficient windows may cost more upfront but can save you hundreds of dollars a year in energy bills.

What are the different types of windows?

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

What services do window installation companies provide?

Window installers cover the entire process — from replacing your old windows with new ones to cleaning up afterward. In addition, some companies offer window manufacturing, customization and repairs.

Should I replace all my windows at the same time?

If you’re upgrading your windows to get more efficient windows, replacing all of the windows at once is the only way to see a noticeable difference. However, if you have just a few windows that are broken or drafty, you can replace just those.

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