21 Best Window Replacement Companies in Glastonbury, CT (Mar 2023)
Window Companies Near Me
If you're thinking about getting new windows, our guide to the best window installation companies can help.
We analyzed all the top window installers in Glastonbury and selected the top 21 based on:
-
Customer reviews
-
Window replacement expertise
-
Popularity with home-owners like you
Please enter a valid 5-digit zip code!

Updated March 14, 2023
Why you can trust EcoWatch
Although green energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your house's efficiency can also have a considerable impact on home energy conservation. When it's the middle of winter, your old and drafty windows could be making your home harder to heat and more uncomfortable for you.
That's not great for either your bank account or the environment, but one of the best window installation companies can help you with that.
So if you're constructing a new home, renovating or changing out old windows in Glastonbury, this guide is the best place to get started.
Best Affordability
Window World
- Lifetime warranty
- Large serice area
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
Best for Residential Windows
Window Nation
- Award-winning company
- Custom designs
- Manufactures products in-house
- Installation not covered by warranty
Best Window Replacement Companies in Glastonbury
The EcoWatch Reviews team assessed many window installation companies in Glastonbury to find the top ones for our readers. The providers mentioned in this article passed our review standards for energy-efficient offerings as well as price, customer service, local expertise and beyond.

Window World
-
Lifetime warranty
-
Large serice area
-
Great industry reputation
-
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 about 27 years. Hundreds of positive reviews on customer review websites back the provider's reputation.
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 with a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so be sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Glastonbury?Even though pricing is not available on Window World's website, it's known for offering some of the most affordable window installations around. If you'd like more accurate information, you can ask for a quote on the company's website.

Renewal by Andersen
-
Award-winning company
-
Member of US Green Building Council
-
Manufactures products in-house
-
No lifetime warranty
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been in business since 1995 and currently provides services to nearly every state except Mississippi and West Virginia. Its reputation is backed by all the positive reviews on customer review websites.
It 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 WindowsThere are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. A 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.
How much does Renewal by Andersen cost in Glastonbury?Prices are not available on Andersen's website because the cost of window replacement depends on how many and what type(s) of windows you need. However, 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 to know for sure, you can inquire about a quote on the company's website.

Window Nation
-
Award-winning company
-
Custom designs
-
Manufactures products in-house
-
Installation not covered by warranty
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 installation business for around 16 years.
You may want to consider picking Window Nation 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.
Energy Efficiency of Window Nation WindowsWindow Nation carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want Energy Star windows when inquiring. Each 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.
How much does Window Nation cost in Glastonbury?While prices are 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 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. This company has been in business since 1999 and currently provides services to 13 states and Washington D.C. Many positive reviews on customer review websites back the provider's reputation.
It installs windows and doors at businesses across the Eastern U.S.
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 be sure to mention that you want Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Glastonbury?Pricing details are not available on Aeroseal's website because the cost of window installment depends on how many and what type(s) of windows you need. However, it provides high-quality windows at a competitive price point. If you'd like more accurate pricing information, you can get a quote on the company's website.
One thing to note is that the companies in this section are national, meaning the quality of the service may depend on your local team. We have tried to remain unbiased and transparent by mentioning pros and cons for each company.
More Window Replacement Companies in Glastonbury
Renewal by Andersen - Branford
Branford, CT-
Good Customer Service
-
No-fee Quotes
-
Locally Recognized for Quality
-
Arrives on Time
Services Offered
-
Residential Windows
-
Custom Windows
-
Commercial Windows
-
Double-Hung
-
Stained Glass
-
Sliding Glass
-
Bay & Bow Windows
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Locally Recognized for Quality
-
Reliable Appointment Windows
-
No-Hassle Pricing
-
Consistent Workmanship
Services Offered
-
Residential Windows
-
Custom Windows
-
Commercial Windows
-
Double-Hung
-
Stained Glass
-
Sliding Glass
-
Bay & Bow Windows
Nu-Face Home Improvements
Plantsville, CT-
Reliable Service
-
Good Customer Service
-
No-fee Quotes
-
Helps Educate Customers
Services Offered
-
Residential Windows
-
Glass Showers
-
Energy-Efficient Options
-
Custom Windows
-
Double-Hung
-
Sliding Glass
Advanced Window Systems LLC
Cromwell, CT-
Free Quotes
-
Educational Website
-
Reliable Service
-
Timely Service
Services Offered
-
Glass Showers
-
Energy-Efficient Options
-
Custom Window Designs
-
Double-Hung
-
Sliding Glass
-
Bay & Bow Windows
Mainville Windows & Doors
Newington, CT-
Price Transparency
-
Educational Website
-
Consistent Workmanship
-
No-fee Quotes
Services Offered
-
Residential Windows
-
Custom Windows
-
Aluminum Window Frames
-
Business Windows
-
Double-Hung
-
Sliding Glass
United Glass & Mirror Co
Bozrah, CT-
Price Transparency
-
Educational Website
-
Award-Winning
-
Good Customer Service
Services Offered
-
Residential Windows
-
Architectural Glass
-
Glass Showers
-
Heavy Glass
-
Tempered Glass
-
Doors
-
Custom Window Designs
-
Commercial Windows
-
Sliding Glass
Window World of Hartford
Manchester, CT-
Locally Recognized for Quality
-
Excellent Customer Service
-
No-fee Quotes
-
Price Transparency
Services Offered
-
Custom Window Designs
-
Fast Delivery
-
Sliding Glass
-
Double-Hung
National Vinyl LLC | National Vinyl Windows
Chicopee, MA-
No-fee Quotes
-
Good Customer Service
-
Reliable Service
-
Price Transparency
Services Offered
-
Custom Window Designs
-
Fast Delivery
-
Sliding Glass
-
Double-Hung
V. Nanfito Roofing & Siding
Meriden, CT-
Reliable Appointment Windows
-
Dependable Service
-
Locally Recognized for Quality
-
No-Hassle Pricing
Services Offered
-
Residential Windows
-
Business Windows
-
Full-Service Installations
-
Custom Window Designs
Mr. Handyman of Norwich, New London and Glastonbury
Norwich, CT-
Locally Recognized for Quality
-
No-fee Quotes
-
Arrives on Time
-
Price Transparency
Services Offered
-
Custom Windows
-
Residential Windows
-
Business Windows
-
Double-Hung
Mr. Handyman of Guilford, North and East Haven
East Haven, CT-
No-fee Quotes
-
Price Transparency
-
Timely Service
-
Helps Educate Customers
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Commercial Windows
-
Double-Hung
Turner Home Improvement Contractors, LLC,
Glastonbury, CT-
Dependable Service
-
Price Transparency
-
Free Quotes
-
Educational Website
Services Offered
-
Residential Windows
-
Business Windows
-
Full-Service Installations
-
Custom Windows
Peter L Brown
Granby, CT-
Reliable Service
-
Price Transparency
-
Excellent Customer Service
-
Timely Service
Services Offered
-
Energy-Efficient Options
-
Custom Window Designs
-
Aluminum Window Frames
-
Double-Hung
-
Sliding Glass
Capitol Glass Co Inc
West Hartford, CT-
Helps Educate Customers
-
Free Quotes
-
Price Transparency
-
Excellent Customer Service
Services Offered
-
Residential Windows
-
Architectural Glass
-
Doors
-
Custom Window Designs
-
Aluminum Window Frames
-
Full-Service Installations
-
Commercial Windows
-
Sliding Glass
Torrington Replacement Windows
Torrington, CT-
Helps Educate Customers
-
Free Quotes
-
Price Transparency
-
Good Customer Service
Services Offered
-
Architectural Glass
-
Energy-Efficient Options
-
Custom Windows
-
Aluminum Window Frames
-
Business Windows
-
Double-Hung
-
Sliding Glass
-
Bay & Bow Windows
Clinton Glass
Clinton, CT-
Excellent Customer Service
-
Helps Educate Customers
-
No-Hassle Pricing
-
Locally Recognized for Quality
Services Offered
-
Residential Windows
-
Glass Showers
-
Fast Delivery
-
Custom Windows
-
Commercial Windows
-
Sliding Glass
Plymouth Glass & Mirror, Inc.
Thomaston, CT-
Good Customer Service
-
Locally Recognized for Quality
-
Free Quotes
-
No-Hassle Pricing
Services Offered
-
Glass Showers
-
Residential Windows
-
Architectural Glass
-
Doors
-
Custom Window Designs
-
Business Windows
Villwell Builders, LLC
Waterbury, CT-
Educational Website
-
Award-Winning
-
Excellent Customer Service
-
Free Quotes
Services Offered
-
Custom Windows
-
Residential Windows
-
Business Windows
Pella Windows & Doors of West Springfield
West Springfield, MA-
No-fee Quotes
-
Locally Recognized for Quality
-
Good Customer Service
-
Educational Website
Services Offered
-
Residential Windows
-
Architectural Glass
-
Custom Windows
-
Commercial Windows
-
Double-Hung
-
Sliding Glass
Thomas Garbati Builders, LLC
Waterford, CT-
No-Hassle Pricing
-
Dependable Service
-
Free Quotes
-
Educational Website
Services Offered
-
Custom Windows
-
Residential Windows
-
Double-Hung
Renewal by Andersen Windows Connecticut
Cromwell, CT-
Consistent Workmanship
-
Excellent Customer Service
-
Price Transparency
-
No-fee Quotes
Services Offered
-
Energy-Efficient Options
-
Custom Windows
-
Aluminum Window Frames
-
Full-Service Installations
-
Double-Hung
-
Sliding Glass
-
Bay Windows
How Installing Energy-Efficient Windows in Glastonbury Saves You Money
Energy-efficient windows can benefit you in more than one way. Here are some reasons you may want to think about making the switch:
- Save on energy bills: According to the Department of Energy, heat gained or lost through windows accounts for around 25-30% of residential energy use. Switching to energy-efficient models can help reduce how much energy is used in your home, therefore saving you about 12% more on your bills.
- Decrease your carbon footprint: By using less energy once you switch to Energy Star certified windows, you'll also be decreasing your carbon dioxide emissions by about 12%, according to Energy Star.
- Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes tend to have windows that are outdated, drafty or maybe even damaged in some way. Updating your windows could help increase the value of your home if you decide to sell.
- Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent your floors, carpets and furniture from fading by filtering out UV rays.
Estimated Cost of Window Replacement in Glastonbury
Windows come in various shapes and sizes, so costs and services will vary remarkably. Here are the typical costs and the primary services that you can find from window installers.
How Much Do New Windows Cost?
On average, homeowners in Glastonbury can expect that most window installations will range from $250 to $1,200, with the average cost at around $600. But costs will differ considerably depending on the current condition of your home, your location, the number of windows you need and the quality of your products. A lot of window companies also offer replacement door installations and other add-ons like coating, baths, shutters and more. Additional services will increase overall project costs.
It's also worth bearing in mind that energy-efficient windows will cost more upfront, but Energy Star predicts that upgrading the windows on your Glastonbury home translates to an average energy savings of $236 to $319 a year for single-pane window replacement, or between $87 to $126 a 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.
We recommend getting free quotes from several window companies to find the right windows and the company that works best for you.
What Services do Window Installers Offer?
There are typically two types of window replacement services: full-frame and pocket installations.
A full-frame installation replaces the complete window, including the windowsill, frame, trim and the window panes. Because this kind of installation requires more time and labor, it will be more expensive than a pocket installation. A pocket installation entails replacing a window without replacing the frame. This means instead of removing the whole unit and reinstalling it, the window installer will just put 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 advise you on the best type for your project. In Glastonbury, the decision will mostly depend on how much damage there is currently and how old your existing frames are.
Best Affordability
Window World
- Lifetime warranty
- Large serice area
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Member of US Green Building Council
- Manufactures products in-house
- No lifetime warranty
Best for Residential Windows
Window Nation
- Award-winning company
- Custom designs
- Manufactures products in-house
- Installation not covered by warranty
How We Choose the Best Window Installers in Glastonbury
The EcoWatch Reviews team is different from most reviewers since we assess these companies through a sustainability lens. Along with energy efficiency, we analyzed window companies all across the state and ranked them using the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find the right window installation company near you.
Work Quality
We're willing to bet that you're not looking for a company to do a shoddy job installing windows. We've vetted each company on this list to ensure its technicians are well-qualified and that the company has gotten lots of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don't have nice things to say about their experience with a certain installer, you won't see it featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installers are not going to provide the most quality service. Still, we want to make sure we're highlighting companies that provide a range of price and financing options so they're accessible to most homeowners.
Warranty
As discussed previously, windows are a significant investment, so you'll want to be certain that investment is well protected. Window installation companies with 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 experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Glastonbury, CT Window Replacement FAQs
What is the typical cost to replace windows in a home?
The typical cost to replace one window ranges from $450 to $650. There are a variety of factors that affect how much it costs, which include styles and sizes of windows, local labor costs, the materials used in designing the windows, your property's location, the number of windows and how energy-efficient the windows are.
Which kind of window should I get?
A window's energy efficiency is affected by a number of factors, including the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are typically the most energy-efficient and are certified by the U.S. Department of Energy.
Do you really have to use a window installation company?
You should use a window installation company whenever you want to replace your windows. Installing windows is a involved process that can be difficult and time-consuming, so it's best left to the professionals.
How long does window installation typically take?
Since the average installation time is 30 minutes per window, about 16 windows can be installed during a typical 8-hour work day.
Should I replace my windows all at the same time?
If you're upgrading your windows to get more efficient windows, replacing all of your windows at once is the only way to see a noticeable difference. However, if you have just one or two windows that are broken or drafty, you can replace just those.