30 Best Window Replacement Companies in Rockville, CT (2023 Reviews)
Window Companies Near Me
When you need to replace your windows, our list of the top window installation companies can help you find the right provider for you.
We analyzed all the top window installers in Rockville and selected the top 30 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
Although renewable energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your home's efficiency can also have a large impact on home energy conservation. According to the Department of Energy, heat gained or lost through old or damaged windows could be responsible for 25-30% of residential energy climate control costs.
That's not great for either your bank account or the environment, but one of the best window installation companies can help with that.
We've made a list of the top installation companies to help you in your research, so you can not only enjoy brand new windows, but also save money on your power bills.
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Great industry reputation
- Member of US Green Building Council
- More expensive than competition
Best for Residential Windows
Window Nation
- Custom designs
- Manufactures products in-house
- Wide variety of products and services
- Installation not covered by warranty
Best Window Replacement Companies in Rockville
The EcoWatch team researched dozens of installers in Rockville to find the best window companies for our readers. The providers mentioned in this article scored best in our review categories, such as energy-efficient offerings, price, customer service, local expertise, availability and more.

Window World
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Low prices relative to competitors
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EnergyStar Partner
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Large serice area
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Quality of service will depend on your area
Window World offers windows expertise in Rockville. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has been in business since 1995 and currently serves 200 locations nationwide. Hundreds of positive reviews from customers online 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 that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so be 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 Rockville?Prices are not available on Window World's website since the cost of window installment differs based on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. You can ask for a free quote on its website for more information about pricing.

Renewal by Andersen
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Manufactures products in-house
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Great industry reputation
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Member of US Green Building Council
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More expensive than competition
Renewal by Andersen offers the best availability in Rockville. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window installation business for around 27 years. Hundreds of positive reviews from customers online back the company's reputation.
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 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're interested in Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Rockville?Andersen doesn't have any prices available 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. Requesting a free quote on its website is the best way to get more accurate information.

Window Nation
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Custom designs
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Manufactures products in-house
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Wide variety of products and services
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Installation not covered by warranty
Window Nation provides the best residential windows in Rockville. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This company has been in business since 2006 and currently provides services to residents within 75 miles of its showrooms, which are in 13 states. Its reputation is backed by hundreds of positive reviews from customers online.
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 offering 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 be sure to ask your Window Nation representative when inquiring about services.
How much does Window Nation cost in Rockville?Even though pricing information is 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. If you'd like more accurate pricing information, you can inquire about a quote on the company's website.

Aeroseal Windows
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Many years of experience
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Great industry reputation
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Low number of customer complaints
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Manufactures products in-house
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Custom Designs
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No lifetime warranty
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Not ideal for residential installations
Aeroseal Windows has the best window installation for businesses in Rockville. It's 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 window installation company has been in business since 1999 and currently provides services to 13 states and Washington D.C.
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 has some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for high-quality Energy Star windows when inquiring. 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 Rockville?Aeroseal doesn't have any pricing information displayed on its website, but it provides high-quality windows at a competitive price point. For more detailed information on pricing, you can request a quote from the company.
We have tried to be unbiased and transparent by mentioning pros and cons for each installer. Additionally, any partnerships do not influence our reviews.
More Window Replacement Companies in Rockville
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Price Transparency
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Good Customer Service
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Reliable Appointment Windows
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Reliable Service
Services Offered
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Residential Windows
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Custom Windows
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
Window World of Western Massachusetts
Belchertown, MA-
Supports Charities
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Locally Recognized for Quality
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Free Quotes
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Educational Website
Services Offered
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Architectural Glass
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Nu-Face Home Improvements
Plantsville, CT-
Reliable Appointment Windows
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No-fee Quotes
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Excellent Customer Service
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Locally Recognized for Quality
Services Offered
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Residential Windows
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Glass Showers
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Energy-Efficient Options
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Custom Windows
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Double-Hung
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Sliding Glass
Advanced Window Systems LLC
Cromwell, CT-
Excellent Customer Service
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Educational Website
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No-Hassle Pricing
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No-fee Quotes
Services Offered
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Mainville Windows & Doors
Newington, CT-
Good Customer Service
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Reliable Service
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Price Transparency
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Timely Service
Services Offered
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Residential Windows
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Guaranteed Building Maintenance
Sturbridge, MA-
Reliable Service
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Arrives on Time
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Excellent Customer Service
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Locally Recognized for Quality
Services Offered
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Residential Windows
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Sliding Glass
United Glass & Mirror Co
Bozrah, CT-
Excellent Customer Service
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No-Hassle Pricing
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Award-Winning
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Educational Website
Services Offered
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Residential Windows
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Architectural Glass
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Glass Showers
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Heavy Glass
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Tempered Glass
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Doors
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Custom Window Designs
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Commercial Windows
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Sliding Glass
Window World of Hartford
Manchester, CT-
Reliable Appointment Windows
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Award-Winning
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Free Quotes
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Dependable Service
Services Offered
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Custom Windows
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Fast Delivery
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Sliding Glass
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Double-Hung
National Vinyl LLC | National Vinyl Windows
Chicopee, MA-
Dependable Service
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Educational Website
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Price Transparency
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No-fee Quotes
Services Offered
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Custom Windows
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Fast Delivery
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Sliding Glass
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Double-Hung
V. Nanfito Roofing & Siding
Meriden, CT-
Price Transparency
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Helps Educate Customers
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Consistent Workmanship
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Award-Winning
Services Offered
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Residential Windows
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Business Windows
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Full-Service Installations
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Custom Windows
Mr. Handyman of Norwich, New London and Glastonbury
Norwich, CT-
Reliable Service
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Award-Winning
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Educational Website
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Arrives on Time
Services Offered
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Custom Windows
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Residential Windows
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Commercial Windows
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Double-Hung
Turner Home Improvement Contractors, LLC,
Glastonbury, CT-
Free Quotes
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Reliable Appointment Windows
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Good Customer Service
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No-Hassle Pricing
Services Offered
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Residential Windows
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Business Windows
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Full-Service Installations
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Custom Windows
Peter L Brown
Granby, CT-
Excellent Customer Service
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No-fee Quotes
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Educational Website
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Arrives on Time
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Lowe's Home Improvement
Ware, MA-
No-fee Quotes
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Educational Website
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Price Transparency
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Reliable Appointment Windows
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Capitol Glass Co Inc
West Hartford, CT-
Helps Educate Customers
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Price Transparency
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Good Customer Service
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No-fee Quotes
Services Offered
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Residential Windows
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Architectural Glass
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Doors
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Custom Windows
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Aluminum Window Frames
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Full-Service Installations
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Business Windows
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Sliding Glass
Torrington Replacement Windows
Torrington, CT-
Helps Educate Customers
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No-fee Quotes
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Good Customer Service
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No-Hassle Pricing
Services Offered
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Architectural Glass
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Plymouth Glass & Mirror, Inc.
Thomaston, CT-
No-Hassle Pricing
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Good Customer Service
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Helps Educate Customers
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No-fee Quotes
Services Offered
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Glass Showers
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Residential Windows
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Architectural Glass
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Doors
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Custom Window Designs
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Commercial Windows
Pella Windows & Doors of West Springfield
West Springfield, MA-
Price Transparency
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Educational Website
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No-fee Quotes
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Award-Winning
Services Offered
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Residential Windows
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Architectural Glass
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Sliding Glass
Thomas Garbati Builders, LLC
Waterford, CT-
No-fee Quotes
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Arrives on Time
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Excellent Customer Service
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Educational Website
Services Offered
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Custom Windows
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Residential Windows
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Double-Hung
Renewal by Andersen Windows Connecticut
Cromwell, CT-
Free Quotes
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Excellent Customer Service
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No-Hassle Pricing
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Reliable Service
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Wallingford Glass
Wallingford, CT-
Excellent Customer Service
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Dependable Service
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Free Quotes
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Price Transparency
Services Offered
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Residential Windows
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Tempered Glass
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Doors
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Stained Glass
Guaranty Glass and Mirror
Spencer, MA-
Price Transparency
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Good Customer Service
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Consistent Workmanship
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No-fee Quotes
Services Offered
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Residential Windows
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Architectural Glass
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Sliding Glass
Cussons Sash
Glastonbury, CT-
Free Quotes
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Consistent Workmanship
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Helps Educate Customers
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Price Transparency
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Sliding Glass
Fiderio & Sons
Meriden, CT-
Price Transparency
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Good Customer Service
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Free Quotes
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Timely Service
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
Major Home Improvements LLC - Roofing
Springfield, MA-
Arrives on Time
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Reliable Service
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Helps Educate Customers
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No-fee Quotes
Services Offered
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Custom Windows
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Residential Windows
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Aluminum Window Frames
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Double-Hung
Vovk Home Improvement Siding~Roof~Windows
Feeding Hills, MA-
Educational Website
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No-Hassle Pricing
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Free Quotes
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Consistent Workmanship
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
J C Tonnotti Window Co
Southington, CT-
No-Hassle Pricing
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Arrives on Time
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Free Quotes
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Helps Educate Customers
Services Offered
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Custom Window Designs
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Aluminum Window Frames
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Sliding Glass
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Double-Hung
Window Nation
Wallingford, CT-
Free Quotes
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Excellent Customer Service
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Locally Recognized for Quality
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Dependable Service
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
The Siding Store, Inc
Plainfield, CT-
Price Transparency
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Free Quotes
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Educational Website
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Good Customer Service
Services Offered
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Custom Windows
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Residential Windows
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Energy-Efficient Options
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Sliding Glass
GA Siding, Windows & Roofing
Oxford, MA-
Good Customer Service
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No-fee Quotes
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No-Hassle Pricing
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Reliable Appointment Windows
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Sliding Glass
How Installing Energy-Efficient Windows in Rockville Saves You Money
There are quite a few benefits of upgrading to energy-efficient windows. A few reasons you may want to consider making the switch include the following:
- Decrease your carbon footprint: You can reduce your indirect greenhouse gas emissions by about 12% when you install Energy Star certified windows. In Rockville, that's about 147 pounds per year on average.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes tend to have windows that are outdated, leaky or potentially even damaged in some way. Upgrading your windows could help raise the value of your home if you decide to sell.
- Protect your valuables from fading: When you switch 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.
- Save on power bills: Because energy-efficient windows reduce how much energy you need to heat or cool your home, the switch can help you save about $461 annually on your energy bills in Rockville.
Estimated Cost of Window Replacement in Rockville
Windows come in various shapes, styles and purposes, so costs and services will vary tremendously based on several factors. Below, we detail the typical cost and services that you'll find from window installation companies.
How Much Do New Windows Cost?
On average, Rockville homeowners can anticipate their window replacements to range from $250 to $1,200. The average cost sits at about $600. How much it will cost varies based on several factors, like size, the location of your home, material, type, number of windows and more.
Bear in mind that energy-efficient windows may cost more upfront, but Energy Star predicts the upgrade will save you between $101 and $583 per year when you install single-pane windows and between $27 and $197 per year when you install double-pane, clear glass windows. Your exact savings will vary depending on your local climate, energy rates and individual home characteristics.
Something else that affects the total cost is the material of the frame you pick. Aluminum frames are typically the least expensive and are sturdy and light, but they offer poor insulation. On the other hand, wood frames are the most expensive, as they are aesthetically pleasing and offer decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.
What Services do Window Installers Offer?
Generally, there are two types of window installation services companies offer: full-frame and pocket installations.
Full-frame installations entail replacing the full window, including the trim, sill and frame. Full-frame installations are necessary when you want to change the style of your windows or your window has noticeable damage or rot. Because full-frame installations are more involved, they will increase the total cost. A pocket installation involves replacing a window within the existing frame, which is generally less expensive than a full-frame installation.
If you're still debating which type of installation you should get, you can talk to your installer and get their recommendation. The choice mostly is influenced by the age of your window frames and if there's any damage present.
Best Affordability
Window World
- Low prices relative to competitors
- EnergyStar Partner
- Large serice area
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Great industry reputation
- Member of US Green Building Council
- More expensive than competition
Best for Residential Windows
Window Nation
- Custom designs
- Manufactures products in-house
- Wide variety of products and services
- Installation not covered by warranty
How We Choose the Best Window Installers in Rockville
In our hunt to make your home improvements easier and more eco-friendly in Rockville, EcoWatch examined dozens of companies before landing on these. We have reviewed the top window replacement companies in Rockville mainly based on their energy efficient offerings, as it's what's best for the environment and for you as a homeowner. Energy Star certified windows can lower electricity 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 installers that serve Rockville so you can find a quality window installation company near you.
Work Quality
When choosing new windows, the quality and variety of services often plays just as important of a role in insulation and performance as the brand of window you choose. We do give window installers more points if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent online reviews to find the companies with the highest rates of customer satisfaction, weighted by sample size. Customer satisfaction may be the most important factor, as it indicates the quality of services across most other categories, including warranty, cost, professionalism, quality of parts, quality of installation and more.
Cost
This one is a give-and-take: as with other services, cheap window companies may not provide the highest quality service. On the other hand, we want to make sure we're highlighting companies that provide a wide range of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. That's why window installation companies that have lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Rockville's climate, homeowners will want to mitigate rot, water damage and low efficiency. We factored in local experience to reflect the ability of Rockville window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Rockville, CT Window Replacement FAQs
How much does a window install cost?
The typical cost to install a window ranges between $450 and $650. There are several factors that affect how much it costs, which include the materials used in designing the windows, styles and sizes of windows, the number of windows, local labor costs, how energy-efficient the windows are and your property's location.
What are the most common kinds of replacement windows?
There are several different kinds of windows you can get for your house, including bay windows, picture windows, slider windows, transom windows, casement windows, double-hung and single-hung windows and awning windows.
Do I really have to use a window installation company?
Unless you have home repair skills and have the time to replace your own windows, we recommend hiring a professional. The window installation process is quite involved and can take anywhere from four to six hours for one window. Although it's tempting to try to do it yourself to save money, hiring a company is a faster, more efficient and much safer option.
When is the best time of year to replace windows?
Even though you can install windows any time of year, warmer weather is generally better for installing replacement windows. In addition, it shouldn't be raining, because rain can make the installation more difficult.
Should I replace my windows all at once?
If you're upgrading your windows to save on your energy bills, replacing all the windows at the same time is the only way to gain that benefit. On the other hand, if you have only a few windows that are damaged or leaky, you can replace just those.