20 Best Window Companies in Fairfield, CT (2025 Reviews)
Thinking about improving your property’s appearance? The best window replacement companies can help.
We analyzed all the top-rated window companies in Fairfield 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
Although environmentally friendly energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your house’s efficiency can also have a considerable impact on home energy conservation. If your windows are made of traditional materials, or are outdated or damaged, you could be sending 25-30% of your home’s heat or cool air out of them.
That’s also bad for the environment because the additional energy required by leaky windows increases your carbon footprint.
Unlike other sites, EcoWatch ranks window installation companies on energy efficiency while also taking into consideration cost, customer satisfaction and service area.
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 Fairfield
The EcoWatch Reviews team assessed several window installation companies across Fairfield to narrow our list down to the best ones. The installers mentioned in this article scored best in our review categories, which include energy-efficient offerings, availability, price, customer service, local expertise 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 provides windows expertise in Fairfield. Window World has around 27 years of experience in the window replacement business. The provider has many positive reviews from customers on online 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, Window World may be the provider for you.
Energy Efficiency of Window World WindowsIts 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 make sure you mention that you want Energy Star windows when inquiring.
How much does Window World cost in Fairfield?Window World does not list prices on its website, but it's known for offering some of the most affordable window installations around. The best way to know for sure is to request a free quote from the company.

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 provides the best availability in Fairfield. Andersen has around 27 years of experience in the window replacement business. The provider has many positive reviews from customers on online 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, Andersen may be the provider for you.
Energy Efficiency of Renewal by Andersen WindowsA 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 make sure you mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Fairfield?Andersen does not list prices 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. The best way to know for sure is to request a free quote from the company.

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 provides the best window installation for businesses in Fairfield. Aeroseal has around 23 years of experience in the window replacement business. The provider has many positive reviews from customers on online review websites.
If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the provider for you.
Energy Efficiency of Aeroseal Windows WindowsThe 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 make sure you mention that you want Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Fairfield?Aeroseal does not list prices on its website, but it provides high-quality windows at a competitive price point. The best way to know for sure is to request a free quote from the company.

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 provides the best residential windows in Fairfield. Window Nation has around 16 years of experience in the window replacement business. The provider has many positive reviews from customers on online 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, Window Nation may be the provider for you.
Energy Efficiency of Window Nation WindowsEach 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 make sure you mention that you want Energy Star windows when inquiring.
How much does Window Nation cost in Fairfield?Window Nation does not list prices 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. The best way to know for sure is to request a free quote from the company.
One thing to note is that the companies in this section are national, meaning the quality of customer service may vary depending on your local team. We have tried to be unbiased and transparent by describing both pros and cons for every company.
More Window Companies in Fairfield
Renewal by Andersen - Branford
Branford, CTEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Glass Doors
Skylights
Double-Hung
Bay Windows
Window Replacement/Installation
Power Home Remodeling
Trumbull, CTTimely Service
Price Transparency
Free assessment
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Wallingford, CTEducational Website
Price Transparency
Free assessment
Services Offered
Custom Window Designs
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Bay Windows
Double-Hung
Window Depot USA of Southern CT
Trumbull, CTEducational Website
Good Customer Service
Price Transparency
Free assessment
Timely Service
Services Offered
Energy-Efficient Options
Vinyl Frames
Bay Windows
Window Replacement/Installation
Triple Pane Glass
Double-Hung
Glass Doors
United Home Experts
Norwalk, CTEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Window Replacement/Installation
Fiberglass Frames
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
Double-Hung
Greenwich Windows Replacement
Greenwich, CTGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Double-Hung
Window Replacement/Installation
Bay Windows
Flawless Glass & Mirror LLC
Holbrook, NYOwner-operated small business
Customized glass options
Free assessment
Free in-home consultation
Good Customer Service
Price Transparency
Educational Website
Services Offered
Glass Showers
Window Replacement/Installation
Mirrors
Doors & Windows
Albertson, NYSunday availability
Free in-home or virtual consultation
Educational Website
Good Customer Service
Online product shopping
Price Transparency
Free assessment
Services Offered
Vinyl Frames
Double-Hung
Wood Frames
Bay Windows
Window Replacement/Installation
M & R Windows
Bronx, NYPrice Transparency
Timely Service
Services Offered
Window Replacement/Installation
Putnam Windows Inc.
Cold Spring, NYFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Wood Frames
Vinyl Frames
Glass Doors
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYFamily-owned and operated
Free same-day estimates
Price Transparency
Free assessment
Good Customer Service
Labor warranties available
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYFree assessment
Price Transparency
Services Offered
Vinyl Frames
Energy-Efficient Options
Window Replacement/Installation
Aspen Home Remodeling, LLC.
Oradell, NJPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Skylights
Cityproof Soundproof Windows
Long Island City, NYTrademark soundproof Citiwindows
Good Customer Service
Free assessment
Price Transparency
Educational Website
No-construction services available
Timely Service
Over 50,000 installations completed
Services Offered
Window Replacement/Installation
Custom Window Designs
Energy-Efficient Options
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJFree assessment
Saturday and Sunday availability
24-hour emergency service
Price Transparency
Educational Website
Free in-home consultation
Good Customer Service
Services Offered
Window Replacement/Installation
Paramount Gallery
West Hartford, CTEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Glass Doors
Custom Window Designs
Energy-Efficient Options
MK Window Treatments
Greenwich, CTGood Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Mr. Handyman of Huntington and Smithtown
East Northport, NYEducational Website
Good Customer Service
Free assessment
Price Transparency
Timely Service
Services Offered
Window Repair
Window Replacement/Installation
Bay Windows
Smithtown Window Replacement and Doors
Smithtown, NYWeekend availability
Price Transparency
Family-owned and operated
Free assessment
Good Customer Service
Educational Website
Energy-efficient windows and doors
Services Offered
Bay Windows
Storm/Impact Windows
Custom Window Designs
Fiberglass Frames
Metal Frames
Vinyl Frames
Glass Doors
Window Replacement/Installation
Wood Frames
Double-Hung
Energy-Efficient Options
Tempered Glass
Window Repair
Glass Showers
Triple Pane Glass
Calculate how much you can expect to pay for window installation and replacement in Fairfield, 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 Fairfield Saves You Money
By upgrading to energy-efficient windows, you can benefit in several ways, including:
- 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.
- Decrease your carbon footprint: Decreasing the amount of energy you use also lowers your carbon emissions. You could reduce it by 147 pounds per year on average.
- Save on power bills: Since energy-efficient windows decrease the amount of energy needed to heat or cool your home, the switch can help you save about $441 annually on your energy bills in Fairfield.
- Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its value, especially if your home is on the older side.
Estimated Cost of Window Replacement in Fairfield
Each window replacement company offers varying services and has different price points depending on several factors.
How Much Do New Windows Cost?
Generally, homeowners in Fairfield can expect that most window installations will range from $250 to $1,200, with the average cost at around $600. This is because of the fact that the cost of window installations depend on several factors specific to your home, like the size, material and number of windows you need to replace, as well as the location of your property.
It’s also worth noting that energy-efficient windows will typically cost more upfront, but Energy Star predicts that upgrading the windows on your Fairfield home can mean an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 a year for double-pane windows. How much you’ll save by installing energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
Asking for 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?
When considering window replacements, there are typically two kinds that your provider will have: full-frame and pocket installations.
A full-frame installation replaces the entire window, such as the windowsill, frame, trim and the window panes. As this type of installation requires more time, it will cost more than a pocket installation. A pocket installation entails replacing a window within the existing frame. So, instead of tearing 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.
Your window installation company can help you choose which type of installation you need.
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 Fairfield
In our hunt to make your home improvements easier and more eco-friendly in Fairfield, the EcoWatch team evaluated dozens of companies before deciding on these. Along with energy efficiency, we assessed window companies all across the state and ranked them based on the following methodology:
Service Area
This one is pretty self-explanatory, but we’ve chosen to highlight window installers that serve a wide variety of states and cities so you can find the best window installation company near you.
Work Quality
When installing 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 opt for. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Customer feedback is another super important review factor. If the majority of customers don’t have good feedback about their experience with a certain company, it won’t be featured on EcoWatch.
Cost
This one is a give-and-take: as with most services, cheap window installers are not going to provide the highest quality service. On the other hand, we want to make sure we’re highlighting companies that provide a variety of price and financing options so they’re accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. That’s why window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a proven track record in the industry. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Fairfield, CT Window Replacement FAQs
What is the typical cost to install windows in a home?
The national average cost of installing a window is about $600 but can range between $200 and $1,200, based on a few different factors. The price is usually influenced by the location of your property, the type and material of the window and the size of the window. Also, remember that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What are the most common kinds of replacement windows?
There are several different kinds of windows you can get for your home, including slider windows, double-hung and single-hung windows, awning windows, casement windows, bay windows, picture windows and transom windows.
Can I replace my own windows?
If you’re handy and have the time and patience to do the job right, you may be able to install your own windows. But if you don’t have the time or know-how, we recommend hiring a professional.
What time of year should I replace my windows?
Though you can install windows any time of year, warmer weather is often better for replacing windows. Additionally, the weather should be dry, since rain can make the installation more difficult.
Should I replace all my windows at the same time?
If you’re upgrading your windows to save on your energy bills, replacing all your windows at the same time is the only way to see a noticeable difference. However, if you have only a few windows that are damaged or leaky, you can replace just those.