20 Best Window Companies in Seymour, CT (2025 Reviews)
Looking to improve your home’s energy efficiency? The top window replacement companies can help.
We analyzed all the top-rated window companies in Seymour 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 old windows, windows play a key role in conserving energy in your home. According to the Department of Energy, heat or cool air lost through traditional, outdated windows could be responsible for 25-30% of heating and cooling use.
That’s also bad news for the environment, as the additional energy used by drafty windows increases your carbon footprint.
We’ve compiled this guide on the top installation companies to help you in your search, so you can not only enjoy brand-new windows, but also save money on your power 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 Seymour
The EcoWatch Reviews team examined dozens of window providers in Seymour to find the top ones for our readers. The installers we’ve included in this article scored best in our categories: energy-efficient offerings, price, availability, 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 Seymour. Window World has over 27 years of experience in the windows industry, and it currently serves 200 locations nationwide. Its reputation is backed by all the positive reviews from customers online.
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, this may be the company for you.
Energy Efficiency of Window World WindowsWindow World is an Energy Star partner offering a variety of energy-efficient windows. 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 Seymour?Window World does not display prices on its website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate information, you can receive a quote on the company’s website.

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 Seymour. Andersen has over 27 years of experience in the windows industry, and it currently serves nearly every state except Mississippi and West Virginia. Its reputation is backed by all the positive reviews from customers online.
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, this may be the company for you.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen is an Energy Star partner offering a variety of energy-efficient windows. 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 Seymour?Andersen does not display 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. If you’d like more accurate information, you can receive a quote on the company’s website.

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 Seymour. Aeroseal has over 23 years of experience in the windows industry, and it currently serves 13 states and Washington D.C. Its reputation is backed by all the positive reviews from customers online.
If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, this may be the company for you.
Energy Efficiency of Aeroseal Windows WindowsAeroseal Windows is an Energy Star partner offering a variety of energy-efficient windows. 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 Seymour?Aeroseal does not display prices on its website, but it provides high-quality windows at a competitive price point. If you’d like more accurate information, you can receive a quote on the company’s website.

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 Seymour. Window Nation has over 16 years of experience in the windows industry, and it currently serves residents within 75 miles of its showrooms, which are in 13 states. Its reputation is backed by all the positive reviews from customers online.
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, this may be the company for you.
Energy Efficiency of Window Nation WindowsWindow Nation is an Energy Star partner offering a variety of energy-efficient windows. 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 Seymour?Window Nation does not display 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. If you’d like more accurate information, you can receive a quote on the company’s website.
We aim to remain unbiased and transparent by including pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Companies in Seymour
Renewal by Andersen - Branford
Branford, CTGood Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Glass Doors
Bay Windows
Double-Hung
Window Replacement/Installation
Skylights
Power Home Remodeling
Trumbull, CTTimely Service
Free assessment
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Wallingford, CTPrice Transparency
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Custom Window Designs
Double-Hung
Energy-Efficient Options
Bay Windows
Glass Doors
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Window Replacement/Installation
Double-Hung
Energy-Efficient Options
Vinyl Frames
Window Depot USA of Southern CT
Trumbull, CTGood Customer Service
Educational Website
Timely Service
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Bay Windows
Glass Doors
Double-Hung
Window Replacement/Installation
Vinyl Frames
Triple Pane Glass
United Home Experts
Norwalk, CTEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Fiberglass Frames
Window Replacement/Installation
Paramount Gallery
West Hartford, CTFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Glass Doors
Energy-Efficient Options
Custom Window Designs
Window Replacement/Installation
ZN Construction
Canton, CTPrice Transparency
Timely Service
Free assessment
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Greenwich Windows Replacement
Greenwich, CTPrice Transparency
Educational Website
Good Customer Service
Free assessment
Services Offered
Double-Hung
Window Replacement/Installation
Bay Windows
Flawless Glass & Mirror LLC
Holbrook, NYCustomized glass options
Free in-home consultation
Good Customer Service
Price Transparency
Owner-operated small business
Educational Website
Free assessment
Services Offered
Mirrors
Glass Showers
Window Replacement/Installation
Big Dawg Home Improvements
South Windsor, CTTimely Service
Free assessment
Price Transparency
Good Customer Service
Services Offered
Energy-Efficient Options
Skylights
Window Replacement/Installation
Window Repair
Putnam Windows Inc.
Cold Spring, NYPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Wood Frames
Vinyl Frames
Window Replacement/Installation
Glass Doors
Doors & Windows
Albertson, NYGood Customer Service
Educational Website
Price Transparency
Free assessment
Online product shopping
Free in-home or virtual consultation
Sunday availability
Services Offered
Window Replacement/Installation
Double-Hung
Vinyl Frames
Wood Frames
Bay Windows
M & R Windows
Bronx, NYPrice Transparency
Timely Service
Services Offered
Window Replacement/Installation
Budget Blinds of Enfield and Hartford
Somers, CTGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Custom Window Designs
Edge Remodeling, Inc.
Franklin Square, NYLabor warranties available
Free same-day estimates
Price Transparency
Family-owned and operated
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Parco Home Improvement Corp.
Franklin Square, NYPrice Transparency
Free assessment
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Aspen Home Remodeling, LLC.
Oradell, NJEducational Website
Price Transparency
Good Customer Service
Free assessment
Services Offered
Energy-Efficient Options
Skylights
Window Replacement/Installation
Calvary Remodeling
Mystic, CTFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Bencar Building Systems LLC
Wallingford, CTGood Customer Service
Services Offered
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Seymour, 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 Seymour Saves You Money
By switching to energy-efficient windows, you and your family can enjoy several benefits, such as:
- Protect your valuables from fading: When you upgrade to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out harmful UV rays.
- Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your house, you can lower your carbon footprint by about 12%, according to Energy Star.
- Save on electricity bills: The Department of Energy estimates that heat gained or lost via windows makes up around 25-30% of residential energy use. Installing energy-efficient windows can help decrease that number, which helps you save some money on your bills.
- Protect your investment: When you have an older home, your windows could also be outdated or leaky. Keeping your windows up to date is an important part of maintaining your property and its value.
Estimated Cost of Window Replacement in Seymour
Windows come in various shapes and sizes, so costs and services will vary greatly. Here are the average costs and the primary services that you can find from window installers.
How Much Do New Windows Cost?
According to our research, the typical cost of replacing a single window is around $600. However, window replacement costs can range from $200 to $1,200 a window. Costs will vary considerably based on the quality of your products, your location, the current condition of your home and the number of windows you need. Many window companies also offer replacement door installations and other add-ons like shutters, baths, coating and more. These extra services will increase your overall project costs.
With windows, efficiency is the most important factor for many homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — particularly during the summer and winter — they can provide decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Seymour homeowners $420+ a year after replacing single-pane windows.
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 completely wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.
What Services do Window Installers Offer?
The first step when considering an installation is to figure out whether you want a full-frame or pocket installation.
Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has a great amount of deterioration. Full-frame installations are more comprehensive and will increase overall costs. A pocket installation entails installing a new window without replacing the frame. This means instead of tearing out the whole unit and reinstalling it, the installer will just slide the replacement window (also called a retrofit or insert window) into the frame.
If you’re hiring a reputable window installation company, your company can recommend the best type for your project. In Seymour, the decision 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 Seymour
In our search to find the most reliable, eco-friendly window installers in Seymour, the EcoWatch Reviews team landed on the above companies as the best window installation companies in the city. We have evaluated the best window installation companies in Seymour primarily based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy Star certified windows have been shown to reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
This one is pretty self-explanatory, but we’ve chosen to highlight window installers that serve Seymour so you can find the right window installation company near you.
Work Quality
When installing new windows, the quality and range of services can often play just as important of a role in overall efficiency and performance as the brand you get. We do give window installers higher marks if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent customer feedback to find the companies with the most customer satisfaction, weighted by sample size. Customer satisfaction might be the factor we place the most value on, as it indicates the quality of services across most other categories, including quality of parts, warranty, professionalism, cost, quality of installation and more.
Cost
This one is a give-and-take: similar to other services, cheap window companies are not going to provide the highest quality service. On the other hand, we want to make sure we’re highlighting companies that offer a range of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed previously, windows are a hefty investment, so you’ll want to make sure that investment is protected. Window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Because of Seymour’s climate, homeowners will want to mitigate rot, water damage and low efficiency. We factored in local experience to reflect the ability of Seymour window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Seymour, CT Window Replacement FAQs
What is the typical cost to replace windows in a home?
The typical cost to replace one window can range from $450 to $650. There are a variety of factors that influence the price, which include styles and sizes of windows, local labor costs, your property’s location, how energy-efficient the windows are, the number of windows and the materials used in designing the windows.
What kind of window is the most energy-efficient?
Generally, double-pane windows will be more efficient than single-pane windows and windows that don’t open are more efficient than windows that do. If you want to be sure you’re getting the most energy-efficient windows, look for models that have the blue Energy Star certification attached to them — that means they’re certified energy-efficient by the U.S. Department of Energy.
What do window installation companies do?
Window installation professionals go to your home to remove your old windows and replace them with new ones. Some providers install products made by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is done.
How often do you need to replace windows?
Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, then they probably need to be replaced. Apart from that, if your windows have any damage on them, or they have become difficult to operate, they may be in need of replacement.
How long does window installation typically take?
Since the average installation time is 30 minutes per window, about 16 windows can be installed during an 8-hour work day.