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
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Why you can trust EcoWatch
A review of the top window replacement companies in Newtown may not seem like the most interesting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might think. Traditional, outdated windows can cost you in electricity bills. In fact, the Department of Energy estimates that about 30% of your home’s heat or cool air could be lost through your windows.
Luckily, helping you save money with efficient windows also helps our goals of conserving energy and the resources it takes to generate it.
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
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Newtown
The EcoWatch Reviews team evaluated dozens of installers in Newtown to find the top window replacement 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.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window business for about 27 years.
It has established itself as a company 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 WindowsWindow World is an Energy Star partner and offers a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Newtown?Though prices are not available on Window World’s website, it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about pricing.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window business for about 27 years.
It has established itself as a company 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 WindowsRenewal by Andersen is an Energy Star partner and offers a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Newtown?Though prices are not 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 inquire about a free quote on its website for more information about pricing.

Aeroseal Windows
Many years of experience
Great industry reputation
Low number of customer complaints
Manufactures products in-house
Custom Designs
No lifetime warranty
Not ideal for residential installations
Aeroseal Windows is an installer that mainly serves commercial and multifamily properties, and also specializes in railings. If you’re looking for residential window installations, you should probably refer to one of the other companies on this list. Aeroseal has been in the window business for about 23 years.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows is an Energy Star partner and offers a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in Newtown?Though prices are not available on Aeroseal’s website, it provides high-quality windows at a competitive price point. You can inquire about a free quote on its website for more information about pricing.

Window Nation
Award-winning company
Manufactures products in-house
Custom designs
Wide variety of products and services
Installation not covered by warranty
Limited service area
Window Nation is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has been in the window business for about 16 years.
It has established itself as a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsWindow Nation is an Energy Star partner and offers a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company’s windows are Energy Star certified, so make sure to ask your Window Nation representative when inquiring about services.
How much does Window Nation cost in Newtown?Though prices are not 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 inquire about a free quote on its website for more information about pricing.
One thing to note is that the following companies are national, which means the quality of customer service may vary depending on your local team. We have tried to stay unbiased and transparent by mentioning both pros and cons for each company.
More Window Companies in Newtown
Renewal by Andersen - Branford
Branford, CTFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Glass Doors
Double-Hung
Bay Windows
Window Replacement/Installation
Skylights
Power Home Remodeling
Trumbull, CTPrice Transparency
Timely Service
Good Customer Service
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Wallingford, CTFree assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Double-Hung
Custom Window Designs
Glass Doors
Energy-Efficient Options
Bay Windows
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Double-Hung
Window Depot USA of Southern CT
Trumbull, CTPrice Transparency
Timely Service
Free assessment
Good Customer Service
Educational Website
Services Offered
Bay Windows
Window Replacement/Installation
Vinyl Frames
Double-Hung
Energy-Efficient Options
Glass Doors
Triple Pane Glass
United Home Experts
Norwalk, CTGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Fiberglass Frames
Window Replacement/Installation
Putnam Windows Inc.
Cold Spring, NYFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Wood Frames
Glass Doors
Vinyl Frames
Window Replacement/Installation
Greenwich Windows Replacement
Greenwich, CTFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
ZN Construction
Canton, CTFree assessment
Educational Website
Good Customer Service
Price Transparency
Timely Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Paramount Gallery
West Hartford, CTPrice Transparency
Free assessment
Educational Website
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Custom Window Designs
Flawless Glass & Mirror LLC
Holbrook, NYGood Customer Service
Free in-home consultation
Customized glass options
Free assessment
Educational Website
Price Transparency
Owner-operated small business
Services Offered
Window Replacement/Installation
Mirrors
Glass Showers
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
Doors & Windows
Albertson, NYOnline product shopping
Free assessment
Price Transparency
Good Customer Service
Sunday availability
Free in-home or virtual consultation
Educational Website
Services Offered
Vinyl Frames
Bay Windows
Double-Hung
Wood Frames
Window Replacement/Installation
Aspen Home Remodeling, LLC.
Oradell, NJFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Energy-Efficient Options
Skylights
Window Replacement/Installation
Big Dawg Home Improvements
South Windsor, CTTimely Service
Price Transparency
Free assessment
Good Customer Service
Services Offered
Skylights
Window Repair
Window Replacement/Installation
Energy-Efficient Options
Edge Remodeling, Inc.
Franklin Square, NYFree same-day estimates
Labor warranties available
Price Transparency
Good Customer Service
Free assessment
Family-owned and operated
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYPrice Transparency
Free assessment
Services Offered
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJSaturday and Sunday availability
Good Customer Service
Price Transparency
24-hour emergency service
Free assessment
Free in-home consultation
Educational Website
Services Offered
Window Replacement/Installation
Northern Windows Siding, Roofing and Insulation
Goshen, NYEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Frank Conforti Contracting
North Haledon, NJGood Customer Service
Educational Website
Price Transparency
Free assessment
Services Offered
Skylights
Window Repair
Energy-Efficient Options
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Newtown, CT using our customized window cost calculator.
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
Switching to energy-efficient windows can help improve the comfort of your home and help you save on power bills. Here are more ways switching out your windows could benefit you:
- Protect your investment: If you have an older home, your windows are most likely outdated. Updating your windows can make your home more comfortable and also help raise the value of your house if you decide to sell.
- 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.
- Decrease your carbon footprint: In Newtown, you can lower your indirect greenhouse gas emissions by about 147 pounds per year once you install energy-efficient windows.
- Save on power bills: Once you upgrade to energy-efficient windows, you can expect a reduction in your bills by about 12% since you’ll require less energy to heat or cool your home.
Estimated Cost of Window Replacement in Newtown
When researching window installation, each company provides varying services and prices. Let’s go over some average costs and services.
How Much Do New Windows Cost?
Generally, homeowners in Newtown can anticipate that most window installations will range from $250 to $1,200, with the average cost at about $600. These amounts vary depending on the specifics of your installation, including type, material, the location of your home, size, number of windows and more.
With windows, efficiency is the most important factor for most homeowners. High efficiency windows may cost more initially, but by increasing the efficiency of your home — especially during the summer and winter — they can give you decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Newtown homeowners $441+ a year after replacing single-pane windows.
We advise requesting free quotes from multiple window companies to find the one that works best for you.
What Services do Window Installers Offer?
In general, there are two types of window replacement services you can get: full-frame and pocket installations.
A full-frame installation replaces the entire 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. A pocket installation means replacing a window within the existing frame, which is generally less expensive than a full-frame installation.
If you’re still debating which kind of installation to get, you can ask your installer and get their advice. The choice mostly depends on the age of your window frames and if there’s any damage.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Newtown
In our search to make your home improvements easier and more eco-friendly in Newtown, EcoWatch landed on the above companies as the best window installation companies in the city. We’ve decided to assess the best window installation companies in Newtown mainly based on energy efficiency, as it’s the most sustainable option and the best one for homeowners. Energy-efficient windows have been shown to lower power bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve a wide variety of states and cities so you can find the right window installation company near you.
Work Quality
We’re certain that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer included on this list to make sure its technicians are well-qualified and that the company has received lots of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another very important review factor. If the majority of customers don’t have nice things to say about their experience with a certain company, it won’t be featured on EcoWatch.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers want to keep costs as low as possible. When analyzing the prices of providers, we awarded 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 be certain that investment is well protected. Window installation companies that offer lengthy warranties for products, parts and labor 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 are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Newtown, CT Window Replacement FAQs
What is the average cost to install new windows?
The typical cost to replace a single window ranges from $450 to $650. There are many factors that affect the cost, which include how energy-efficient the windows are, the materials used in designing the windows, local labor costs, styles and sizes of windows, the number of windows and your property’s location.
What are the different kinds of windows?
The most common types of windows for homes include: transom windows, awning windows, bay windows, picture windows, double-hung and single-hung windows, slider windows and casement windows.
What services do window installation companies do?
Window installers travel to your house to remove your old windows and replace them with new ones. Some companies install products distributed by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation.
Should I replace all my windows at the same time?
If you want to get more efficient windows and save money on your energy bills, replacing all the windows together is the only way to see a noticeable difference. However, if you have only a few windows that are broken or leaky, you can replace just those.