20 Best Window Companies in Glastonbury, CT (2025 Reviews)
Thinking about upgrading your home's windows? We’ve got you covered in this list of the top window installation companies.
We analyzed all the top-rated window companies in Glastonbury 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 review of the top window installation companies in Glastonbury may not seem like the most compelling article on the EcoWatch site, but trust us, windows have more of an impact on your life than you might realize. When it’s the middle of winter, your old and drafty windows could be making your home harder to heat and costing you more in power bills.
That’s also bad for the environment, as the additional energy used by damaged windows increases your carbon footprint.
As windows have such a large impact on your home, picking the right company for you is a big decision to make. That’s why the EcoWatch team has made this list of the top window installation companies, so you can more easily make an informed decision.
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 Glastonbury
The EcoWatch team evaluated dozens of window installation companies across Glastonbury to narrow our list down to the best ones. The companies mentioned in this article scored best in our categories, including energy-efficient offerings, availability, customer service, price 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 is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window business for around 27 years. The company has hundreds of glowing 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, Window World may be the perfect company 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 offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Window World cost in Glastonbury?Window World does not outline prices on its website, but it's known for offering some of the most affordable window installations around. Receiving a free quote on its website is the best way to get more accurate information.

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 been in the window business for around 27 years. The company has hundreds of glowing 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, Andersen may be the perfect company 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 offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Glastonbury?Andersen does not outline 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. Receiving a free quote on its website is the best way to get more accurate information.

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 been in the window business for around 23 years. The company has hundreds of glowing reviews from customers online.
If you’re looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the perfect company 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 offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Glastonbury?Aeroseal does not outline prices on its website, but it provides high-quality windows at a competitive price point. Receiving a free quote on its website is the best way to get more accurate information.

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 been in the window business for around 16 years. The company has hundreds of glowing 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, Window Nation may be the perfect company 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 offerings are Energy Star certified, so be sure to mention that you’re interested in Energy Star windows when inquiring.
How much does Window Nation cost in Glastonbury?Window Nation does not outline 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. Receiving a free quote on its website is the best way to get more accurate information.
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 remain unbiased and transparent by listing pros and cons for each company.
More Window Companies in Glastonbury
Renewal by Andersen Window Replacement
Middletown, CTGood Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Bay Windows
Double-Hung
Energy-Efficient Options
Custom Window Designs
Vinyl Frames
Glass Doors
Power Home Remodeling
Trumbull, CTPrice Transparency
Timely Service
Good Customer Service
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Wallingford, CTEducational Website
Price Transparency
Free assessment
Services Offered
Double-Hung
Window Replacement/Installation
Glass Doors
Bay Windows
Custom Window Designs
Energy-Efficient Options
Paramount Gallery
West Hartford, CTPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Custom Window Designs
Energy-Efficient Options
Glass Doors
Window Replacement/Installation
Big Dawg Home Improvements
South Windsor, CTTimely Service
Price Transparency
Good Customer Service
Free assessment
Services Offered
Skylights
Energy-Efficient Options
Window Replacement/Installation
Window Repair
ZN Construction
Canton, CTFree assessment
Price Transparency
Timely Service
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Budget Blinds of Enfield and Hartford
Somers, CTFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Custom Window Designs
Window Replacement/Installation
Kubala Home Improvement
Ludlow, MAPrice Transparency
Educational Website
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Calvary Remodeling
Mystic, CTPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Double-Hung
Window Depot USA of Southern CT
Trumbull, CTTimely Service
Price Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Glass Doors
Double-Hung
Triple Pane Glass
Vinyl Frames
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Closet & Storage Systems
Auburn, MAEducational Website
Price Transparency
Free assessment
Good Customer Service
Services Offered
Mirrors
Window Replacement/Installation
Glass Showers
Couto Construction
Warwick, RIPrice Transparency
Educational Website
Timely Service
Good Customer Service
Free assessment
Services Offered
Window Replacement/Installation
Window Repair
Energy-Efficient Options
H & J Homes Solutions LLC
Shrewsbury, MAPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
United Home Experts
Norwalk, CTFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Fiberglass Frames
Window Replacement/Installation
Advanced Window Systems LLC
Cromwell, CTPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Glass Showers
Window Replacement/Installation
Glass Doors
Double-Hung
Bay Windows
Nu-Face Home Improvements
Berlin, CTEducational Website
Price Transparency
Good Customer Service
Free assessment
Timely Service
Services Offered
Glass Doors
Energy-Efficient Options
Double-Hung
Window Replacement/Installation
Glass Showers
Bencar Building Systems LLC
Wallingford, CTGood Customer Service
Services Offered
Window Replacement/Installation
CARRIER ROOFING SIDING & WINDOWS
Webster, MAGood Customer Service
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Tri-State Construction Co
Worcester, MAPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Vinyl Frames
Energy-Efficient Options
Window Replacement/Installation
Calculate how much you can expect to pay for window installation and replacement in Glastonbury, 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 Glastonbury Saves You Money
When you upgrade to energy-efficient windows, you may see several benefits, such as:
- Protect your investment: If you have a relatively old home, your windows are most likely outdated. Updating your windows can improve the insulation in your home and also help raise the value of your home if you decide to sell.
- Save on power bills: The Department of Energy estimates that heat gained or lost via windows accounts for around 25-30% of residential energy use. Upgrading to energy-efficient windows can help reduce that number, which helps you save $446 a year on your bills.
- Decrease your carbon footprint: In Glastonbury, you can reduce your indirect greenhouse gas emissions by about 147 pounds per year after you upgrade to 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 fade less due to their ability to filter out harmful UV rays.
Estimated Cost of Window Replacement in Glastonbury
Each window installation company offers varying services and has different prices based on a few factors.
How Much Do New Windows Cost?
The typical cost to install a single window is about $600 but can range from $200 to $1,200. How much it will cost depends on several factors, such as material, number of windows, size, the location of your home, type and more.
Whether or not you want energy-efficient windows is another factor that will determine the cost. These will usually cost more than other windows, but on the other hand, you can save about $446 a year on your energy bills in Glastonbury.
Requesting free quotes from several installers is the best way to find out which one will work best for your budget.
What Services do Window Installers Offer?
The first step when planning a window installation is to think about whether you want a full-frame or pocket installation.
Full-frame installations entail replacing the full window, including the sill, frame and trim. You most likely need a full-frame installation when you want a new style or your window has noticeable damage or rot. Because these installations are more involved, they will raise the overall cost. Pocket installations (also known as retrofits) are when you replace a window within its existing frame. Pocket installations are on the simpler end and won’t carry as large a bill, but you can’t do this kind of installment if you have any pre-existing rot or water damage.
Your window installation company can recommend the best type for your project. In Glastonbury, the decision will mostly be influenced by the efficiency of your home and the age of your existing frames.
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 Glastonbury
In our search to make your home improvements easier and more eco-friendly in Glastonbury, the EcoWatch team chose the above companies as the top window installation companies in the city. We have decided to evaluate the top window installers in Glastonbury mostly based on their energy efficient offerings, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to reduce your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installation companies that serve Glastonbury so you can find the right window installation company near you.
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 company on this list to make sure its technicians are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another super important review factor. If the majority of customers don’t have good feedback about their service from a certain installer, it won’t be featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installation companies won’t always provide the highest quality service. Still, we want to make sure we’re highlighting companies that offer a variety of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed previously, windows are a sizable 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 installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Because of Glastonbury’s climate, homeowners will want to mitigate low efficiency, water damage and rot. We factored in local experience to reflect the ability of Glastonbury window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Glastonbury, CT Window Replacement FAQs
How much does window installation cost?
The average cost of replacing one window can range from $450 to $650. There are a variety of factors that affect the price, including the materials used in designing the windows, how energy-efficient the windows are, styles and sizes of windows, your property’s location, the number of windows and local labor costs.
What are the different kinds of windows?
There are various types of windows you can get for your house, such as picture windows, double-hung and single-hung windows, casement windows, bay windows, awning windows, slider windows and transom windows.
Do I really have to use a window installation company?
You should hire a window installation company whenever you want new windows. Installing windows is a complicated process that can be difficult and time-consuming, so it’s best left to the professionals.
Should I replace all my windows at once?
If your windows are more than 20 years old, it’s probably time to replace all of them. At that point, they are usually less efficient, leakier and/or more damaged than new windows. Doing your windows all at once will involve less paperwork and less stress.