20 Best Window Companies in Norwalk, CT (2025 Reviews)
Looking to improve your property’s value? The best window replacement companies can help.
We analyzed all the top-rated window companies in Norwalk 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
The EcoWatch team is all about helping Norwalk homeowners find eco-conscious solutions for their homes. Damaged or outdated windows can cost you in electricity bills. In fact, the Department of Energy estimates that 25-30% of your house’s heat or cool air could be lost through your windows.
Luckily, saving you energy with upgraded windows also helps our goals of reducing energy usage for the environment.
We’ve made this list of the best 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.
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 Norwalk
The EcoWatch Reviews team examined dozens of installers that serve the Norwalk area to find the top window installation companies by our standards. The installers mentioned in this article scored best in our review categories, which include energy-efficient offerings, price, availability, local expertise, customer service and more.

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 offers windows expertise in Norwalk. Window World has been in the window business for around 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 WindowsThere are a wide range of window types available from Window World, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Norwalk?Though prices are not readily 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 the cost.

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 offers the best availability in Norwalk. Andersen has been in the window business for around 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 WindowsThere are a wide range of window types available from Renewal by Andersen, some of which are Energy Star products. 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.
How much does Renewal by Andersen cost in Norwalk?Though prices are 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 inquire about a free quote on its website for more information about the cost.

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 offers the best window installation for businesses in Norwalk. Aeroseal has been in the window business for around 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 WindowsThere are a wide range of window types available from Aeroseal Windows, some of which are Energy Star products. 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.
How much does Aeroseal Windows cost in Norwalk?Though prices are not readily 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 the cost.

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 offers the best residential windows in Norwalk. Window Nation has been in the window business for around 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 WindowsThere are a wide range of window types available from Window Nation, some of which are Energy Star products. 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.
How much does Window Nation cost in Norwalk?Though prices are 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 inquire about a free quote on its website for more information about the cost.
Please note that the companies in this section are national, meaning the quality of the service may vary depending on your local team. We have tried to stay unbiased and transparent by describing both pros and cons for every company.
More Window Companies in Norwalk
Renewal by Andersen of Long Island
Farmingdale, NYFree assessment
Educational Website
Price Transparency
Good Customer Service
Services Offered
Skylights
Window Replacement/Installation
Bay Windows
Double-Hung
Glass Doors
Power Home Remodeling
Trumbull, CTTimely Service
Price Transparency
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Wallingford, CTEducational Website
Free assessment
Price Transparency
Services Offered
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Custom Window Designs
Double-Hung
Glass Doors
United Home Experts
Norwalk, CTEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Fiberglass Frames
Greenwich Windows Replacement
Greenwich, CTPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Double-Hung
Bay Windows
Window Depot USA of Southern CT
Trumbull, CTGood Customer Service
Free assessment
Price Transparency
Educational Website
Timely Service
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Energy-Efficient Options
Glass Doors
Vinyl Frames
Triple Pane Glass
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Window Replacement/Installation
Double-Hung
Vinyl Frames
Energy-Efficient Options
Doors & Windows
Albertson, NYOnline product shopping
Good Customer Service
Free assessment
Free in-home or virtual consultation
Educational Website
Price Transparency
Sunday availability
Services Offered
Wood Frames
Vinyl Frames
Double-Hung
Bay Windows
Window Replacement/Installation
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
Flawless Glass & Mirror LLC
Holbrook, NYFree assessment
Customized glass options
Free in-home consultation
Price Transparency
Good Customer Service
Educational Website
Owner-operated small business
Services Offered
Window Replacement/Installation
Mirrors
Glass Showers
Edge Remodeling, Inc.
Franklin Square, NYFree same-day estimates
Family-owned and operated
Free assessment
Labor warranties available
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYPrice Transparency
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Aspen Home Remodeling, LLC.
Oradell, NJEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Skylights
Putnam Windows Inc.
Cold Spring, NYPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Glass Doors
Vinyl Frames
Window Replacement/Installation
Wood Frames
Cityproof Soundproof Windows
Long Island City, NYEducational Website
Trademark soundproof Citiwindows
Free assessment
Timely Service
Price Transparency
Over 50,000 installations completed
No-construction services available
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Custom Window Designs
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJEducational Website
Saturday and Sunday availability
Good Customer Service
Free assessment
24-hour emergency service
Price Transparency
Free in-home consultation
Services Offered
Window Replacement/Installation
F5 Remodeling
Rutherford, NJEducational Website
Price Transparency
Free assessment
Full-service installation
Good Customer Service
Minority-owned and operated
Family-owned and operated
Services Offered
Window Replacement/Installation
Frank Conforti Contracting
North Haledon, NJGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Window Repair
Skylights
Energy-Efficient Options
Window Replacement/Installation
MK Window Treatments
Greenwich, CTFree assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Mr. Handyman of Huntington and Smithtown
East Northport, NYPrice Transparency
Timely Service
Free assessment
Good Customer Service
Educational Website
Services Offered
Bay Windows
Window Repair
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Norwalk, 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 Norwalk Saves You Money
Switching to energy-efficient windows can help improve the comfort of your home and help you save on electricity bills. Here's more information on how switching out your windows could benefit you:
- Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
- Reduce your carbon footprint: In Norwalk, you can cut your indirect greenhouse gas emissions by about 147 pounds per year when you upgrade to energy-efficient windows.
- 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 potentially even damaged in some way. Updating your windows could help increase the value of your property if you decide to sell.
- Save money on electricity bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you use less energy.
Estimated Cost of Window Replacement in Norwalk
Each window installer offers various services and has varying costs based on a few factors.
How Much Do New Windows Cost?
Even though the typical cost to replace a single window is about $600, it can range from $200 to $1,200. These estimates vary based on the specifics of your installation, such as number of windows, material, the location of your home, size, type and more.
Keep in mind that energy-efficient windows may have a higher price, but Energy Star estimates the upgrade will save you between $101 and $583 per year when installing single-pane windows and between $27 and $197 a year when installing double-pane, clear glass windows. These savings vary depending on your local climate, energy rates and individual home characteristics.
Asking for free quotes from several installers is the best way to find out which one is right for you.
What Services do Window Installers Offer?
There are generally two kinds of window replacement services: full-frame and pocket installations.
Full-frame installations require replacing the full window — the sill, frame, trim and all. These are typically done when you want a different style for your windows or when it has significant damage. Full-frame installations require more time and labor and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window without replacing the frame. Pocket installations are on the simpler end and won’t cost as much, but you can’t do this kind of installment if you have any pre-existing rot or water damage.
Your window installation company should be able to help you decide what’s best for your needs. In Norwalk, the decision will mostly depend on how old your windows are and if there’s any damage. Wood can decay if it’s not maintained properly over the years, so it’s good to have a professional evaluate your frames and window sills.
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 Norwalk
In our search to make your home improvements easier and more eco-friendly in Norwalk, EcoWatch evaluated many companies before settling on these. We’ve reviewed the top window replacement companies in Norwalk primarily based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to cut your electricity 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 Norwalk, we paid more attention to companies that cover the city. There are other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Norwalk.
Work Quality
We’re willing to bet that you’re looking for a company to do a great job installing windows. We’ve vetted each installer included on this list to ensure its contractors are well-qualified and that the company has received a lot of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don’t have good feedback about their experience with a certain window installation company, it won’t be featured on EcoWatch.
Cost
This one is a give-and-take: similar to most services, cheap window installation companies may not provide the most quality service. On the other hand, we want to make sure we’re highlighting companies that provide a spectrum of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. That’s why window installation companies with 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 been in the industry for quite some time. Window installation companies that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
Norwalk, CT Window Replacement FAQs
How much should a window install cost?
The average cost to replace one window ranges between $450 and $650. There are several factors that affect the cost, including the materials used in designing the windows, how energy-efficient the windows are, styles and sizes of windows, your property’s location, local labor costs and the number of windows.
What type of window is the best for energy efficiency?
Generally, double-pane windows are more efficient than single-pane windows and windows that do not open are more efficient than windows that do. To be sure you’ll have the most energy-efficient windows, look for models that have the blue Energy Star certification — this means they’re certified energy-efficient by the U.S. Department of Energy.
Can I install my own windows?
Although you can install your own windows, doing so is time-consuming and requires a lot of handiness. Hiring a professional can help guarantee that the installation is done properly and that you won’t have to spend the time and effort to do it yourself.
How long does window installation generally take?
Because the average installation time is 30 minutes per window, around 16 windows can be installed in an 8-hour work day.