20 Best Window Companies in New Fairfield, CT (2025 Reviews)
Thinking about replacing your windows? We’ve got you covered in this guide to the top window installation companies.
We analyzed all the top-rated window companies in New 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
Whether you're doing renovations or have windows that need repairs, windows play a vital role in conserving your home's electricity. Drafty windows could lead to having higher power bills during the winter or summer months.
Replacement windows improve your home’s insulation, not only making you and your family more comfortable during the summer and winter, but also saving you money and helping the environment.
So if you’re constructing a new home, renovating or replacing your windows in New Fairfield, this guide is the best place to get started.
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 New Fairfield
The EcoWatch team assessed dozens of window providers across New Fairfield to narrow our list down to the best ones. The companies mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, price, customer service 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 about 27 years of experience in the window installation industry.
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 has 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 mention that you want energy-efficient windows to your Window World representative when inquiring about services.
How much does Window World cost in New Fairfield?Window World does not mention prices on its website, but it's known for offering some of the most affordable window installations around. You can request 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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the window installation industry.
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 has 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 mention that you want energy-efficient windows to your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in New Fairfield?Andersen does not mention 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. You can request 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 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 about 23 years of experience in the window installation industry.
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 has 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 mention that you want energy-efficient windows to your Aeroseal representative when inquiring about services.
How much does Aeroseal Windows cost in New Fairfield?Aeroseal does not mention prices on its website, but it provides high-quality windows at a competitive price point. You can request 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 is 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 window installation industry.
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 has 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 mention that you want energy-efficient windows to your Window Nation representative when inquiring about services.
How much does Window Nation cost in New Fairfield?Window Nation does not mention 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. You can request a free quote on its website for more information about the cost.
We aim to remain unbiased and transparent by including pros and cons for every company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Companies in New Fairfield
Renewal by Andersen - Branford
Branford, CTPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Bay Windows
Double-Hung
Glass Doors
Window Replacement/Installation
Skylights
Power Home Remodeling
Trumbull, CTGood Customer Service
Price Transparency
Timely Service
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Wallingford, CTPrice Transparency
Free assessment
Educational Website
Services Offered
Glass Doors
Custom Window Designs
Bay Windows
Double-Hung
Energy-Efficient Options
Window Replacement/Installation
Window Depot USA of Southern CT
Trumbull, CTFree assessment
Timely Service
Good Customer Service
Educational Website
Price Transparency
Services Offered
Triple Pane Glass
Energy-Efficient Options
Window Replacement/Installation
Double-Hung
Bay Windows
Vinyl Frames
Glass Doors
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Window Replacement/Installation
Vinyl Frames
Double-Hung
Energy-Efficient Options
Putnam Windows Inc.
Cold Spring, NYGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Glass Doors
Window Replacement/Installation
Vinyl Frames
Wood Frames
United Home Experts
Norwalk, CTGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Fiberglass Frames
Greenwich Windows Replacement
Greenwich, CTEducational Website
Free assessment
Good Customer Service
Price Transparency
Services Offered
Bay Windows
Double-Hung
Window Replacement/Installation
ZN Construction
Canton, CTEducational Website
Timely Service
Free assessment
Price Transparency
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Paramount Gallery
West Hartford, CTGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Custom Window Designs
M & R Windows
Bronx, NYTimely Service
Price Transparency
Services Offered
Window Replacement/Installation
Aspen Home Remodeling, LLC.
Oradell, NJEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Skylights
Northern Windows Siding, Roofing and Insulation
Goshen, NYGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Doors & Windows
Albertson, NYGood Customer Service
Educational Website
Price Transparency
Online product shopping
Sunday availability
Free in-home or virtual consultation
Free assessment
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Vinyl Frames
Wood Frames
Frank Conforti Contracting
North Haledon, NJFree assessment
Good Customer Service
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Window Repair
Energy-Efficient Options
Skylights
Flawless Glass & Mirror LLC
Holbrook, NYPrice Transparency
Owner-operated small business
Good Customer Service
Free assessment
Educational Website
Customized glass options
Free in-home consultation
Services Offered
Glass Showers
Window Replacement/Installation
Mirrors
HDL Construction LLC — Windows replacement, Roofing, Roof service, Siding replacement, Chimney, Deck, Masonry
Hasbrouck Heights, NJPrice Transparency
Educational Website
24-hour emergency service
Saturday and Sunday availability
Good Customer Service
Free in-home consultation
Free assessment
Services Offered
Window Replacement/Installation
Edge Remodeling, Inc.
Franklin Square, NYFree assessment
Good Customer Service
Price Transparency
Free same-day estimates
Family-owned and operated
Labor warranties available
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYPrice Transparency
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Vinyl Frames
Big Dawg Home Improvements
South Windsor, CTFree assessment
Timely Service
Good Customer Service
Price Transparency
Services Offered
Window Repair
Window Replacement/Installation
Skylights
Energy-Efficient Options
Calculate how much you can expect to pay for window installation and replacement in New 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 New Fairfield Saves You Money
Upgrading to energy-efficient windows can improve the comfort of your home and help you save on electricity bills. Here's more information on how switching out your windows could help you:
- Reduce your carbon footprint: In New Fairfield, you can lower your indirect greenhouse gas emissions by about 147 pounds per year once you install energy-efficient windows.
- Protect your valuables from fading: When you upgrade to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out harmful UV rays.
- 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 property if you decide to sell.
- Save on power bills: Once you install energy-efficient windows, you can see a reduction in your bills by about 12% since you’ll need less energy to heat or cool your home.
Estimated Cost of Window Replacement in New Fairfield
When considering window installation, each company provides different services and prices. Let’s look at some typical costs and services.
How Much Do New Windows Cost?
On average, New Fairfield homeowners can anticipate their window replacements to range from $250 to $1,200. The most common installations sit at approximately $600. How much it will cost varies based on several factors, such as size, the location of your home, material, number of windows, type and more.
It’s also worth keeping in mind that energy-efficient windows will cost more upfront, but Energy Star predicts that switching out the windows on your New Fairfield home can mean 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. How much you’ll save by upgrading to energy-efficient windows varies based on your local climate, energy rates and other factors unique to your home.
We recommend getting free quotes from multiple window companies to find the right windows and the company that works best for your budget.
What Services do Window Installers Offer?
The first step when considering an installation is to clarify whether you need a full-frame or pocket installation.
A full-frame installation is a total window replacement. This service involves removing the old window, the windowsill, and the exterior and interior trim. It can also involve other materials, including insulation and drip edges, which raise the overall cost of the project. It’s also worth noting that you may have to touch up the paint around the window after a full-frame installation. A pocket installation means replacing a window within the existing frame, which tends to be less expensive than a full-frame installation.
If you’re hiring a reputable window installation company, your company can advise you on the best type for your project. In New Fairfield, the choice will mostly be influenced by how much damage there is currently and how old your existing frames are.
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 New Fairfield
In our hunt to make your home improvements easier and more eco-friendly in New Fairfield, the EcoWatch team chose the above companies as the top window installation companies in the city. We’ve assessed the best window installers in New Fairfield mainly based on energy efficiency, as it’s what’s best for the environment and for you as a homeowner. Energy Star certified windows can reduce 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 New Fairfield, we paid more attention to companies that cover 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 New Fairfield.
Work Quality
We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each company included on this list to make sure its contractors 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 highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it reflects the quality of services across most other categories, including professionalism, warranty, cost, quality of parts, quality of installation and more.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers try to keep costs low when 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 sizable investment, so you’ll want to make sure that investment is well protected. Window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Because of New Fairfield’s climate, homeowners will want to mitigate water damage, low efficiency and rot. We factored in local experience to reflect the ability of New Fairfield window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
New Fairfield, CT Window Replacement FAQs
What is the average cost to replace windows?
The typical cost of installing a window can range between $450 and $650. There are a variety of factors that influence the price, including the number of windows, styles and sizes of windows, your property’s location, how energy-efficient the windows are, the materials used in designing the windows and local labor costs.
What type of window is the best for energy efficiency?
A window’s energy efficiency is influenced by a variety of factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are often the most energy-efficient since they are certified by the U.S. Department of Energy.
Can you replace your 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 getting a professional to do it for you.
Should I replace my windows all at the same time?
If you want to get more efficient windows and save money on energy costs, replacing all the windows at once is the only way to see a noticeable difference. On the other hand, if you have only a few windows that are damaged or leaky, you can replace just those.