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
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Why you can trust EcoWatch
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 According to the Department of Energy, heat or cool air lost through outdated, drafty windows could represent 25-30% of heating and cooling use.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.
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 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
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 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 WindowsWindow 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
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 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 WindowsRenewal 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
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 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 WindowsAeroseal 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
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 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 WindowsWindow 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, NYPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Skylights
Glass Doors
Window Replacement/Installation
Bay Windows
Double-Hung
Power Home Remodeling
Trumbull, CTPrice Transparency
Good Customer Service
Timely Service
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Wallingford, CTPrice Transparency
Educational Website
Free assessment
Services Offered
Double-Hung
Energy-Efficient Options
Custom Window Designs
Bay Windows
Window Replacement/Installation
Glass Doors
United Home Experts
Norwalk, CTEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Fiberglass Frames
Window Depot USA of Southern CT
Trumbull, CTEducational Website
Price Transparency
Timely Service
Good Customer Service
Free assessment
Services Offered
Bay Windows
Glass Doors
Window Replacement/Installation
Energy-Efficient Options
Triple Pane Glass
Double-Hung
Vinyl Frames
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Double-Hung
Greenwich Windows Replacement
Greenwich, CTEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Double-Hung
Bay Windows
Window Replacement/Installation
Putnam Windows Inc.
Cold Spring, NYEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Glass Doors
Vinyl Frames
Window Replacement/Installation
Wood Frames
M & R Windows
Bronx, NYPrice Transparency
Timely Service
Services Offered
Window Replacement/Installation
Doors & Windows
Albertson, NYOnline product shopping
Price Transparency
Educational Website
Sunday availability
Good Customer Service
Free assessment
Free in-home or virtual consultation
Services Offered
Wood Frames
Bay Windows
Double-Hung
Vinyl Frames
Window Replacement/Installation
Flawless Glass & Mirror LLC
Holbrook, NYGood Customer Service
Price Transparency
Customized glass options
Free assessment
Owner-operated small business
Free in-home consultation
Educational Website
Services Offered
Mirrors
Glass Showers
Window Replacement/Installation
Aspen Home Remodeling, LLC.
Oradell, NJGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Skylights
Energy-Efficient Options
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYFamily-owned and operated
Good Customer Service
Price Transparency
Labor warranties available
Free assessment
Free same-day estimates
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYFree assessment
Price Transparency
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
24-hour emergency service
Price Transparency
Educational Website
Free in-home consultation
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Cityproof Soundproof Windows
Long Island City, NYPrice Transparency
Trademark soundproof Citiwindows
Educational Website
Over 50,000 installations completed
Good Customer Service
Free assessment
No-construction services available
Timely Service
Services Offered
Window Replacement/Installation
Custom Window Designs
Energy-Efficient Options
Frank Conforti Contracting
North Haledon, NJFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Repair
Skylights
F5 Remodeling
Rutherford, NJEducational Website
Free assessment
Family-owned and operated
Good Customer Service
Minority-owned and operated
Price Transparency
Full-service installation
Services Offered
Window Replacement/Installation
MK Window Treatments
Greenwich, CTFree assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Westchester Window
Thornwood, NYGood Customer Service
Services Offered
Wood Frames
Glass Doors
Energy-Efficient Options
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Wilton, 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 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.
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 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.