23 Best Window Replacement Companies in Prospect, CT (Mar 2023)
Window Companies Near Me
If you're thinking about upgrading to new windows, our guide to the top window installation companies can help.
We analyzed all the top window installers in Prospect and selected the top 23 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
Whether you're updating for aesthetics or have windows that need repairs, windows play a crucial role in conserving your home's energy. Damaged or outdated windows can cost you in electricity bills. In fact, the Department of Energy estimates that 25-30% of your home's heat or cool air could be lost through your windows.
Installing efficient windows on your house can help you save money each month on your energy bills — and you can help the environment as well.
Because windows have such a great impact on your home, choosing the right company for you is a big choice to make. That's why the EcoWatch team has curated this list of the best window installation companies, so you can more easily make an informed decision.
Best Affordability
Window World
- EnergyStar Partner
- Lifetime warranty
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Manufactures products in-house
- Award-winning company
- No lifetime warranty
Best for Residential Windows
Window Nation
- Manufactures products in-house
- Custom designs
- Wide variety of products and services
- Installation not covered by warranty
Best Window Replacement Companies in Prospect
The EcoWatch Reviews team researched dozens of installers in Prospect to find the best window replacement companies for our readers. The installers mentioned in this article scored the best in our review categories, which include energy-efficient offerings, availability, price, local expertise, customer service and more.

Window World
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EnergyStar Partner
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Lifetime warranty
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Great industry reputation
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Quality of service will depend on your area
Window World provides windows expertise in Prospect. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has been operating since 1995 and currently serves 200 locations nationwide.
If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the right provider for you.
Energy Efficiency of Window World WindowsThere are a wide range of window types available from Window World, some of which are Energy Star products. 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 Prospect?Pricing details are not available on Window World's website since the cost of window replacement depends 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. If you'd like to know for sure, you can inquire about a quote on the company's website.

Renewal by Andersen
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Great industry reputation
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Manufactures products in-house
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Award-winning company
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No lifetime warranty
Renewal by Andersen provides the best availability in Prospect. This company has 27 years of experience in the windows business, and it has become one of the most reputable companies in Prospect. The company has plenty of glowing reviews from customers online.
You may want to consider choosing Andersen if you're interested in a installer 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 WindowsRenewal by Andersen offers 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. 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 Prospect?Andersen doesn't have any pricing information displayed 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. For more accurate information on pricing, you can receive a quote from the company.

Window Nation
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Manufactures products in-house
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Custom designs
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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 Prospect. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This company has 16 years of experience in the window installation industry, and it has proved to be one of the best companies in Prospect. Many positive reviews on customer review websites back the company's reputation.
Window Nation may be the company for you if you want one 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 appeals to eco-conscious consumers by providing energy-efficient window offerings. 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 Prospect?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 inquire about a free quote on its website for more information about the cost.

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 offers the best window installation for businesses in Prospect. This company has been in business since 1999 and currently services 13 states and Washington D.C. Many positive reviews from customers online back the company's reputation.
If you're looking for a company that installs windows and doors at businesses across the Eastern U.S, Aeroseal may be the 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 windows are Energy Star certified, so be sure to mention that you'd like Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Prospect?Aeroseal does not list prices on its website, but it provides high-quality windows at a competitive price point. Getting a free quote on its website is the best way to know for sure.
One thing to note is 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 stay unbiased and transparent by including both pros and cons for each provider.
More Window Replacement Companies in Prospect
Renewal by Andersen - Branford
Branford, CT-
Locally Recognized for Quality
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Excellent Customer Service
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Arrives on Time
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Dependable Service
Services Offered
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Residential Windows
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Custom Window Designs
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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
TL Home Improvement LLC
Shelton, CT-
Price Transparency
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No-fee Quotes
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Good Customer Service
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Reliable Service
Services Offered
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Residential Windows
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Fast Delivery
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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
Renewal by Andersen - Southern New England
Windsor Locks, CT-
Educational Website
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Free Quotes
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Reliable Service
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Award-Winning
Services Offered
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Residential Windows
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Custom Window Designs
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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 Windows
Nu-Face Home Improvements
Plantsville, CT-
No-Hassle Pricing
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Consistent Workmanship
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Locally Recognized for Quality
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Arrives on Time
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
Mr. Handyman of Upper Fairfield County
Fairfield, CT-
Timely Service
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No-fee Quotes
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Educational Website
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Good Customer Service
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Residential Windows
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Business Windows
Advanced Window Systems LLC
Cromwell, CT-
Reliable Service
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No-Hassle Pricing
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Timely Service
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Educational Website
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
Eastern Glass & Shower Door
Milford, CT-
Educational Website
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Good Customer Service
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Free Quotes
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No-Hassle Pricing
Services Offered
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Doors
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Full-Service Installations
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Custom Window Designs
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Tempered Glass
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Residential Windows
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Commercial Windows
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Aluminum Window Frames
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Sliding Glass
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Glass Showers
Mainville Windows & Doors
Newington, CT-
Good Customer Service
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Free Quotes
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Arrives on Time
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Reliable Service
Services Offered
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Residential Windows
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Custom Window Designs
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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
Window World of Hartford
Manchester, CT-
Reliable Service
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Excellent Customer Service
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Free Quotes
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No-Hassle Pricing
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-
Timely Service
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Educational Website
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No-Hassle Pricing
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Locally Recognized for Quality
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 Guilford, North and East Haven
East Haven, CT-
Award-Winning
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Excellent Customer Service
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Consistent Workmanship
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Helps Educate Customers
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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Double-Hung
Turner Home Improvement Contractors, LLC,
Glastonbury, CT-
Timely Service
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Good Customer Service
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Consistent Workmanship
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Free Quotes
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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Consistent Workmanship
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Arrives on Time
Services Offered
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Energy-Efficient Options
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Custom Windows
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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-
Price Transparency
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Educational Website
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Good Customer Service
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Free 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 Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Commercial Windows
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Sliding Glass
Torrington Replacement Windows
Torrington, CT-
No-Hassle Pricing
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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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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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Business Windows
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Double-Hung
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Sliding Glass
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Bay & Bow Windows
Clinton Glass
Clinton, CT-
Price Transparency
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Excellent Customer Service
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Helps Educate Customers
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Award-Winning
Services Offered
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Residential Windows
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Glass Showers
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Fast Delivery
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Custom Window Designs
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Commercial Windows
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Sliding Glass
Plymouth Glass & Mirror, Inc.
Thomaston, CT-
Locally Recognized for Quality
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Educational Website
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No-fee Quotes
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Excellent Customer Service
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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Business Windows
Villwell Builders, LLC
Waterbury, CT-
Arrives on Time
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Consistent Workmanship
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Free Quotes
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Price Transparency
Services Offered
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Custom Windows
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Residential Windows
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Business Windows
Renewal by Andersen Windows Connecticut
Cromwell, CT-
Price Transparency
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Reliable Service
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Good Customer Service
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Free Quotes
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 Windows
Wallingford Glass
Wallingford, CT-
No-fee Quotes
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Price Transparency
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Excellent Customer Service
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Dependable Service
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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Business Windows
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Double-Hung
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Stained Glass
Ring's End
Madison, CT-
Educational Website
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Good Customer Service
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Price Transparency
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Free Quotes
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Commercial Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
Ring's End
Branford, CT-
Free Quotes
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Helps Educate Customers
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Good Customer Service
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Price Transparency
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Business Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
Ring's End
South Salem, NY-
Price Transparency
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Good Customer Service
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No-fee Quotes
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Helps Educate Customers
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Commercial Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
How Installing Energy-Efficient Windows in Prospect Saves You Money
When you switch to energy-efficient windows, you may see several perks, including:
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Protect your investment: When your home is on the older side, your windows could also be outdated or damaged. Upgrading your windows is an important part of maintaining your property and its value.
- Save money on electricity bills: Because energy-efficient windows reduce the amount of energy used to heat or cool your home, they can help you save around $420 annually on your energy bills in Prospect.
- Reduce your carbon footprint: You can reduce your carbon footprint by about 12% once you install Energy Star certified windows. In Prospect, that's about 147 pounds per year on average.
Estimated Cost of Window Replacement in Prospect
When researching window installation, each company provides different services and prices. Let's take a look at some average costs and services.
How Much Do New Windows Cost?
Typically, homeowners in Prospect can expect that most window installations will cost between $250 and $1,200, with the average cost sitting at about $600. These numbers are based on the specifics of your installation, including number of windows, type, the location of your home, material, size and more.
It's important to keep in mind that windows with the best efficiency may cost more initially but can save you hundreds of dollars by lowering your energy bills. Investing in certified energy-efficient windows can save Prospect homeowners $420+ a year when replacing single-pane windows.
We advise requesting free quotes from multiple window installers to find the one that works best for your budget.
What Services do Window Installers Offer?
In regard to window installations, in general there are two types that your provider will offer: full-frame and pocket installations.
Full-frame installations are usually done when you want to change the style of your windows or your window has a lot of rot. With this service, your installers will replace the full window, including the frame, trim and sill. Pocket installations are on the simpler end and won't carry as large a bill because they entail simply replacing the window within its existing frame. But if the frame has any damage, you may need a full-frame installation instead.
If you're still trying to decide which kind of installation to get, you can consult with your installer and get their advice. The decision mostly depends on how old the frames are and if there's any damage present.
Best Affordability
Window World
- EnergyStar Partner
- Lifetime warranty
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Manufactures products in-house
- Award-winning company
- No lifetime warranty
Best for Residential Windows
Window Nation
- Manufactures products in-house
- Custom designs
- Wide variety of products and services
- Installation not covered by warranty
How We Choose the Best Window Installers in Prospect
In our hunt to make your home improvements easier and more eco-friendly in Prospect, the EcoWatch team evaluated dozens of companies before settling on these. Along with energy efficiency, we analyzed several window installers in Prospect and ranked them using the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installation companies that serve a wide variety of states and cities so you can find a quality window installation company near you.
Work Quality
When installing new windows, the quality and variety of services can often play just as important of a role in overall efficiency and performance as the type of window you choose. We do rate window installers higher if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If most customers don't have good things to say about their service from a certain window installation company, you won't see it featured on EcoWatch.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers would like to keep costs low when possible. When analyzing providers' prices, we gave higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed previously, windows are a serious 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 labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a proven track record in the industry. Window installation companies that have more years of experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Prospect, CT Window Replacement FAQs
What is the typical cost to install windows in a home?
The typical cost of installing one window can range from $450 to $650. There are a variety of factors that affect the cost, including how energy-efficient the windows are, the materials used in designing the windows, the number of windows, local labor costs, styles and sizes of windows and your property's location.
What are the most common kinds of replacement windows?
There are various kinds of windows you can get for your house, including awning windows, picture windows, bay windows, double-hung and single-hung windows, transom windows, slider windows and casement windows.
What services do window replacement companies offer?
Window installation professionals will do the entire process — from replacing your old windows with brand new ones to cleaning up afterward. In addition, some companies offer window manufacturing, customization and repairs.
What time of year is the best time to replace my windows?
Though you can install windows any time of year, warmer weather is generally better for installing replacement windows. Additionally, it shouldn't be raining, as rain can make the installation harder.
How often do you need to replace your windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, then they should probably be replaced. Other than that, if your windows have damage anywhere on them, or they have become difficult to open or close, they may be in need of replacement.