27 Best Window Replacement Companies in Sterling, CT (2023 Reviews)
Window Companies Near Me
Thinking about replacing your home's windows? We've got you covered in this list of the best window installation companies.
We analyzed all the top window installers in Sterling and selected the top 27 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
A review of the best window replacement companies in Sterling may not seem like the most riveting article on EcoWatch, but trust us, windows have more of an impact on your life than you might realize. Drafty or leaky windows can decrease your home's energy efficiency by up to 30%, according to the Department of Energy. In Sterling, that's around $457 per year that you could save on your power bills by making the switch.
Installing efficient windows on your property can help you save money each month on your energy bills — and you can help the environment as well.
Unlike other review sites, EcoWatch ranks window installation companies on energy efficiency while also balancing cost, customer satisfaction and service area.
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Great industry reputation
- Award-winning company
- No lifetime warranty
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Best for Businesses
Aeroseal Windows
- Low number of customer complaints
- Manufactures products in-house
- Great industry reputation
- No lifetime warranty
Best Window Replacement Companies in Sterling
The EcoWatch Reviews team researched many window installation companies across Sterling to narrow our list down to the best ones. The companies we've mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, price, customer service and beyond.

Renewal by Andersen
-
Member of US Green Building Council
-
Great industry reputation
-
Award-winning company
-
No lifetime warranty
Renewal by Andersen provides the best availability in Sterling. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has about 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia. The provider 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, this 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 offerings 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 Sterling?Pricing details are not available on Andersen's website because the cost of window replacement varies greatly depending 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. The best way to know for sure is to ask for a free quote from the company.

Window World
-
Low prices relative to competitors
-
EnergyStar Partner
-
Great industry reputation
-
Quality of service will depend on your area
Window World has windows expertise in Sterling. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the window installation industry, and it has proved to be one of the most reputable companies in the business. The provider has a lot of positive reviews from customers online.
You may want to consider opting for Window World if you're interested in 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Sterling?Window World does not mention prices on its website, but it's known for offering some of the most affordable window installations around. Requesting a free quote on its website is the best way to get more accurate pricing information.

Aeroseal Windows
-
Low number of customer complaints
-
Manufactures products in-house
-
Great industry reputation
-
No lifetime warranty
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 installation business for about 23 years.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThere are a wide variety of window types available from Aeroseal Windows, some of which are Energy Star products. The 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.
How much does Aeroseal Windows cost in Sterling?Even though prices are not readily available on Aeroseal's website, it provides high-quality windows at a competitive price point. You can ask for 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 provides the best residential windows in Sterling. This company has been in business since 2006 and currently serves residents within 75 miles of its showrooms, which are in 13 states. Hundreds of positive reviews on customer review websites back the company's reputation.
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 perfect provider for you.
Energy Efficiency of Window Nation WindowsWindow Nation has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for 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 Sterling?Window Nation doesn't have any cost information listed 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 get more accurate information is to ask for a free quote from the company.
We've recommended companies with good reputations, but note that these are national companies, so your service may depend on your local crew. We have tried to stay unbiased and transparent by including pros and cons for each company we reviewed.
More Window Replacement Companies in Sterling
United Better Homes
Central Falls, RI-
Locally Recognized for Quality
-
Consistent Workmanship
-
Timely Service
-
Free Quotes
Services Offered
-
Residential Windows
-
Custom Windows
-
Full-Service Installations
-
Commercial Windows
-
Sliding Glass
Shine Construction Inc
Uxbridge, MA-
Helps Educate Customers
-
Good Customer Service
-
No-Hassle Pricing
-
Reliable Appointment Windows
Services Offered
-
Residential Windows
-
Custom Window Designs
-
Full-Service Installations
-
Business Windows
-
Double-Hung
Shine Construction Inc
Uxbridge, MA-
Good Customer Service
-
Locally Recognized for Quality
-
Price Transparency
-
Helps Educate Customers
Services Offered
-
Residential Windows
-
Custom Windows
-
Full-Service Installations
-
Commercial Windows
-
Double-Hung
Krystal Glass & Door Co
Smithfield, RI-
Dependable Service
-
Excellent Customer Service
-
No-Hassle Pricing
-
Educational Website
Services Offered
-
Residential Windows
-
Architectural Glass
-
Glass Showers
-
Custom Window Designs
-
Aluminum Window Frames
-
Business Windows
-
Double-Hung
-
Sliding Glass
The Window Source RI
Smithfield, RI-
Helps Educate Customers
-
Price Transparency
-
Reliable Appointment Windows
-
No-fee Quotes
Services Offered
-
Architectural Glass
-
Tempered Glass
-
Custom Window Designs
-
Aluminum Window Frames
-
Double-Hung
-
Sliding Glass
Guaranteed Building Maintenance
Sturbridge, MA-
Excellent Customer Service
-
Locally Recognized for Quality
-
Dependable Service
-
Arrives on Time
Services Offered
-
Residential Windows
-
Energy-Efficient Options
-
Custom Window Designs
-
Aluminum Window Frames
-
Commercial Windows
-
Sliding Glass
United Glass & Mirror Co
Bozrah, CT-
Educational Website
-
Award-Winning
-
No-Hassle Pricing
-
Excellent Customer Service
Services Offered
-
Residential Windows
-
Architectural Glass
-
Glass Showers
-
Heavy Glass
-
Tempered Glass
-
Doors
-
Custom Window Designs
-
Business Windows
-
Sliding Glass
Mr. Handyman of Norwich, New London and Glastonbury
Norwich, CT-
Locally Recognized for Quality
-
Helps Educate Customers
-
Good Customer Service
-
Arrives on Time
Services Offered
-
Custom Windows
-
Residential Windows
-
Commercial Windows
-
Double-Hung
Thomas Garbati Builders, LLC
Waterford, CT-
Educational Website
-
No-fee Quotes
-
Timely Service
-
Award-Winning
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Double-Hung
Window World of Rhode Island
Warwick, RI-
Price Transparency
-
Free Quotes
-
Educational Website
-
Charitable Giving
Services Offered
-
Custom Window Designs
-
Architectural Glass
-
Sliding Glass
-
Double-Hung
Henderson Roofing
Westerly, RI-
Award-Winning
-
Reliable Service
-
No-fee Quotes
-
Educational Website
Services Offered
-
Custom Windows
-
Residential Windows
-
Full-Service Installations
-
Commercial Windows
Window Wizards
Pawcatuck, CT-
Dependable Service
-
Excellent Customer Service
-
No-Hassle Pricing
-
Arrives on Time
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Commercial Windows
-
Sliding Glass
The Siding Store, Inc
Plainfield, CT-
Arrives on Time
-
Good Customer Service
-
Free Quotes
-
Consistent Workmanship
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Energy-Efficient Options
-
Sliding Glass
GA Siding, Windows & Roofing
Oxford, MA-
Educational Website
-
Excellent Customer Service
-
Arrives on Time
-
No-fee Quotes
Services Offered
-
Custom Windows
-
Residential Windows
-
Business Windows
-
Sliding Glass
Handyman Services of CT LLC
Niantic, CT-
No-Hassle Pricing
-
Good Customer Service
-
Supports Charities
-
Educational Website
Services Offered
-
Custom Window Designs
-
Sliding Glass
Jancon Exteriors
Franklin, MA-
Excellent Customer Service
-
Helps Educate Customers
-
Consistent Workmanship
-
No-Hassle Pricing
Services Offered
-
Double-Hung
-
Residential Windows
-
Full-Service Installations
-
Custom Windows
Glass America
7+ years in business · Westerly, RI-
No-Hassle Pricing
-
Helps Educate Customers
-
Arrives on Time
-
Award-Winning
Services Offered
-
Custom Window Designs
-
Commercial Windows
Lockheed Architectural Solutions, Inc.
Pascoag, RI-
Excellent Customer Service
-
Price Transparency
-
Dependable Service
-
Helps Educate Customers
Services Offered
-
Architectural Glass
-
Doors
-
Custom Window Designs
-
Commercial Windows
-
Double-Hung
Renewal by Andersen of Rhode Island
Smithfield, RI-
Reliable Service
-
Good Customer Service
-
No-fee Quotes
-
Price Transparency
Services Offered
-
Energy-Efficient Options
-
Custom Window Designs
-
Full-Service Installations
-
Double-Hung
-
Sliding Glass
-
Bay & Bow Windows
Christopher Home Improvement
Norwich, CT-
Consistent Workmanship
-
Free Quotes
-
Good Customer Service
-
Helps Educate Customers
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Business Windows
Renewal by Andersen Windows & Doors
Newport, RI-
Price Transparency
-
Reliable Service
-
Excellent Customer Service
-
No-fee Quotes
Services Offered
-
Energy-Efficient Options
-
Custom Windows
-
Full-Service Installations
-
Double-Hung
-
Sliding Glass
-
Bay & Bow Windows
Providence Glass & Mirror, LLC
Providence, RI-
No-fee Quotes
-
Good Customer Service
-
Helps Educate Customers
-
Consistent Workmanship
Services Offered
-
Custom Windows
-
Residential Windows
-
Business Windows
-
Sliding Glass
Marshall Building & Remodeling
Riverside, RI-
Reliable Appointment Windows
-
Price Transparency
-
Award-Winning
-
Excellent Customer Service
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Energy-Efficient Options
-
Double-Hung
B&R Home Improvement
Central Falls, RI-
Free Quotes
-
Helps Educate Customers
-
Price Transparency
-
Good Customer Service
Services Offered
-
Custom Window Designs
-
Residential Windows
-
Business Windows
-
Double-Hung
The Roofing Store LLC
Plainfield, CT-
No-Hassle Pricing
-
Helps Educate Customers
-
Award-Winning
-
Excellent Customer Service
Services Offered
-
Custom Windows
-
Residential Windows
-
Aluminum Window Frames
-
Commercial Windows
Custom Built
Auburn, MA-
Consistent Workmanship
-
Price Transparency
-
Good Customer Service
-
Educational Website
Services Offered
-
Sliding Glass
-
Custom Window Designs
-
Energy-Efficient Options
-
Double-Hung
Pella Windows & Doors of Seekonk
Seekonk, MA-
No-Hassle Pricing
-
Excellent Customer Service
-
Educational Website
-
Free Quotes
Services Offered
-
Architectural Glass
-
Custom Window Designs
-
Commercial Windows
-
Double-Hung
-
Sliding Glass
How Installing Energy-Efficient Windows in Sterling Saves You Money
Energy-efficient windows can provide benefits in more than one way. Here are some reasons you may want to consider making the switch:
- Save on electricity bills: Once you install energy-efficient windows, you can expect a reduction in your bills by about 12% since you'll need less energy to heat or cool your house.
- Reduce your carbon footprint: In Sterling, you can reduce your indirect greenhouse gas emissions by about 147 pounds per year once you switch to energy-efficient windows.
- Protect your investment: If your home is on the older side, your windows are most likely outdated. Upgrading your windows can improve the insulation in your home and also help increase the value of your house if you decide to sell.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
Estimated Cost of Window Replacement in Sterling
When considering window installation, each company offers different services and costs. Let's take a look at some average costs and services.
How Much Do New Windows Cost?
Generally, Sterling homeowners can expect their window installations to range from $250 to $1,200. The most common installations sit at approximately $600. These figures vary based on the specifics of your installation, such as the location of your home, number of windows, material, size, type and more.
It's important to keep in mind that windows with the best efficiency may cost more upfront but can save you hundreds of dollars via returns on your energy bills. Investing in certified energy-efficient windows can save Sterling homeowners $457+ a year when replacing single-pane windows.
Another factor that influences the total cost is the material you pick for your frame. Aluminum frames are generally the least pricey and are sturdy and light, but they provide poor insulation. On the other hand, wood frames cost the most because they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.
What Services do Window Installers Offer?
In regard to window replacements, in general there are two kinds that your installer will have: full-frame and pocket installations.
Full-frame installations involve replacing the full window, including the frame, sill and trim. You most likely need a full-frame installation when you want to change the style of your windows or your window has noticeable damage. Because full-frame installations are more involved, they will raise the total cost. Pocket installations are on the simpler end and won't cost as much, as they entail merely replacing the window within its existing frame. But if the frame has any damage or deterioration, you may have to get a full-frame installation instead.
Your window installation company will be able to help you decide what's best for your needs. In Sterling, the decision will mostly depend on how old your windows are and if there's any damage. Wood can decay if not properly maintained over the years, so it's a good idea to have a professional assess your frames and window sills.
Best Overall
Renewal by Andersen
- Member of US Green Building Council
- Great industry reputation
- Award-winning company
- No lifetime warranty
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Great industry reputation
- Quality of service will depend on your area
Best for Businesses
Aeroseal Windows
- Low number of customer complaints
- Manufactures products in-house
- Great industry reputation
- No lifetime warranty
How We Choose the Best Window Installers in Sterling
In our search to make your home improvements easier and more eco-friendly in Sterling, the EcoWatch team evaluated dozens of companies before deciding on these. We've reviewed the top window installation companies in Sterling mostly based on energy efficiency, as it's what's best for the environment and for you as a homeowner. Energy Star certified windows can lower energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve Sterling so you can find a quality window installation company near you.
Work Quality
We're willing to bet that you're looking for professionals who do a great job installing windows. We've vetted each company on this list to make sure its contractors are well-qualified and that the company has gotten plenty of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent online reviews to determine the companies with the most customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across most other categories, including warranty, quality of parts, cost, professionalism, quality of installation and more.
Cost
This one is a give-and-take: similar to most services, cheap window installation companies won't always provide the most quality service. On the other hand, we want to ensure we're highlighting companies that offer a variety of price and financing options so they're accessible to most homeowners.
Warranty
As discussed, windows are a significant investment, so you'll want to make sure that investment is protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Because of Sterling's climate, homeowners will want to mitigate water damage, rot and low efficiency. We factored in local experience to reflect the ability of Sterling window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Sterling, CT Window Replacement FAQs
What is the typical cost to install windows?
The average cost of installing one window can range between $450 and $650. There are a variety of factors that influence the cost, including the materials used in designing the windows, how energy-efficient the windows are, your property's location, local labor costs, the number of windows and styles and sizes of windows.
What kind of window is the most energy-efficient?
Generally, double-pane windows are 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'll have the most energy-efficient windows, look for models that have the blue Energy Star certification attached to them — they're certified energy-efficient by the U.S. Department of Energy.
Can I replace my own windows?
While it is possible to install your own windows, doing so requires a lot of time and experience with home improvement projects. Using a window installation company can help guarantee that the installation is done properly and that you can avoid spending the time and effort of doing it yourself.
When is the best time of year to replace windows?
Although you can install windows any time of year, warmer weather is often better for installing replacement windows. In addition, the weather should be dry, since rain can make the installation more difficult.
Should I replace my windows all at the same time?
If you're upgrading your windows because of energy-efficiency, replacing all of the windows at once is the only way to see a noticeable difference. However, if you have only one or two windows that are damaged or drafty, you can replace just those.