22 Best Window Replacement Companies in Guilford, CT (2023 Reviews)
Window Companies Near Me
When you need to upgrade 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 Guilford and selected the top 22 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 May 04, 2023
Why you can trust EcoWatch
Although environmentally friendly energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your home's energy efficiency can also have a big impact on home energy conservation. Potential leaks or drafts from your windows can make your home uncomfortable in the summer or winter.
Thankfully, helping you save money with efficient windows also aligns with our goals of reducing energy usage for the environment.
Because windows have such a large impact on your home, selecting the best company for you is a big choice to make. That's why the EcoWatch team has created this list of the best window installation companies, so you can more easily make an informed decision.
Best Affordability
Window World
- Large serice area
- Low prices relative to competitors
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
- More expensive than competition
Best for Businesses
Aeroseal Windows
- Manufactures products in-house
- Many years of experience
- Custom Designs
- No lifetime warranty
Best Window Replacement Companies in Guilford
The EcoWatch Reviews team evaluated dozens of window providers across Guilford to narrow our list down to the top ones. The installers mentioned in this article passed our review standards for energy-efficient offerings as well as price, customer service, local expertise and beyond.

Window World
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Large serice area
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Low prices relative to competitors
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Great industry reputation
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Quality of service will depend on your area
Window World has windows expertise in Guilford. Window World has been in the window industry for about 27 years. The company has many glowing reviews from customers on online review websites.
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 company for you.
Energy Efficiency of Window World WindowsWindow World caters to eco-conscious consumers by providing energy-efficient window offerings. 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 Guilford?Pricing details are not available on Window World's website, as the cost of window installment varies greatly depending 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. For more accurate information on the cost, you can receive a quote from the company.

Renewal by Andersen
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Great industry reputation
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Member of US Green Building Council
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Manufactures products in-house
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the window installation business.
You may want to consider opting for 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 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 Guilford?Prices aren't listed on Andersen's website, but 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 get more accurate information is to ask for a free quote from the company.

Aeroseal Windows
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Manufactures products in-house
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Many years of experience
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Custom Designs
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No lifetime warranty
Aeroseal Windows offers the best window installation for businesses in Guilford. 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 company has 23 years of experience in the window installation industry, and it has established itself as one of the most respected companies in Guilford. Its reputation is backed by hundreds of positive reviews on customer review websites.
Aeroseal may be the company for you if you're interested in one that 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 make sure you mention that you're interested in Energy Star windows when inquiring.
How much does Aeroseal Windows cost in Guilford?Aeroseal does not display prices on its website, but it provides high-quality windows at a competitive price point. For more detailed information on pricing, you can inquire about a quote from the company.

Window Nation
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Award-winning company
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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
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Limited service area
Window Nation has the best residential windows in Guilford. 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. The company has a lot of positive reviews from customers online.
If you're looking for a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms, Window Nation may be the right company for you.
Energy Efficiency of Window Nation WindowsThere are a wide range of window types that Window Nation offers, some of which are Energy Star products. 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 Guilford?Pricing details are not available on Window Nation's website since the cost of window installment differs based on how many and what type(s) of windows you need. However, 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. For more detailed information on the cost, you can request a quote from the company.
We aim to be unbiased and transparent by listing pros and cons for every company. Additionally, any partnerships do not influence our rankings.
More Window Replacement Companies in Guilford
Binswanger Glass
Bristol, CT-
Free assessment
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Good Customer Service
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Award-Winning
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Timely Service
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Custom Window Designs
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Glass Showers
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Fast Delivery
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Full-Service Installations
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Stained Glass
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Sliding Glass
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Commercial Windows
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Aluminum Window Frames
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Double-Hung
Nu-Face Home Improvements
Plantsville, CT-
Timely Service
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Price Transparency
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Educational Website
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Good Customer Service
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Award-Winning
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Free assessment
Services Offered
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Glass Showers
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Custom Window Designs
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Residential Windows
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Energy-Efficient Options
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Double-Hung
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Fast Delivery
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Sliding Glass
Advanced Window Systems LLC
Cromwell, CT-
Educational Website
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Good Customer Service
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Timely Service
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Free assessment
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Price Transparency
Services Offered
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Energy-Efficient Options
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Glass Showers
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Double-Hung
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Bay Windows
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Custom Window Designs
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Sliding Glass
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Residential Windows
Home Comfort Practice, Inc.
Stratford, CT-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
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Award-Winning
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Timely Service
Services Offered
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Energy-Efficient Options
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Glass Showers
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Residential Windows
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Commercial Windows
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Custom Window Designs
Turner Home Improvement Contractors, LLC
Glastonbury, CT-
Free assessment
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Timely Service
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Good Customer Service
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Educational Website
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Award-Winning
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Price Transparency
Services Offered
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Double-Hung
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Residential Windows
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Fast Delivery
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Full-Service Installations
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Custom Window Designs
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Commercial Windows
Window Nation
Wallingford, CT-
Free assessment
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Price Transparency
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Award-Winning
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Educational Website
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Good Customer Service
Services Offered
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Stained Glass
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Custom Window Designs
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Bay Windows
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Energy-Efficient Options
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Sliding Glass
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Residential Windows
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Double-Hung
Baybrook Remodelers Inc
West Haven, CT-
Award-Winning
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Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Fast Delivery
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Residential Windows
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Commercial Windows
Budget Blinds of Monroe and Milford
Monroe, CT-
Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Fast Delivery
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Aluminum Window Frames
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Commercial Windows
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Residential Windows
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Glass Showers
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Custom Window Designs
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Energy-Efficient Options
Pro Exteriors LLC
New Haven, CT-
Price Transparency
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Educational Website
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Award-Winning
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Free assessment
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Timely Service
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Good Customer Service
Services Offered
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Full-Service Installations
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Fast Delivery
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Residential Windows
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Custom Window Designs
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Commercial Windows
Mr. Handyman of Cheshire, Middletown, Old Saybrook
Cheshire, CT-
Award-Winning
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
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Good Customer Service
Services Offered
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Custom Window Designs
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Glass Showers
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Residential Windows
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Double-Hung
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Commercial Windows
Mr. Handyman of Guilford, North and East Haven
East Haven, CT-
Price Transparency
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Good Customer Service
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Free assessment
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Award-Winning
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Educational Website
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Timely Service
Services Offered
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Glass Showers
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Custom Window Designs
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Double-Hung
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Residential Windows
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Commercial Windows
Pella Windows & Doors of Monroe
Monroe, CT-
Award-Winning
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Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Residential Windows
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Commercial Windows
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Bay Windows
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Sliding Glass
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Double-Hung
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Custom Window Designs
Window Depot USA of Southern CT
Trumbull, CT-
Good Customer Service
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Timely Service
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Free assessment
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Price Transparency
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Educational Website
Services Offered
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Double-Hung
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Sliding Glass
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Bay Windows
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Energy-Efficient Options
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Residential Windows
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Fast Delivery
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Custom Window Designs
Clinton Glass
Clinton, CT-
Educational Website
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Good Customer Service
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Free assessment
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Price Transparency
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Award-Winning
Services Offered
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Glass Showers
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Sliding Glass
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Fast Delivery
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Custom Window Designs
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Residential Windows
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Commercial Windows
Eastern Glass & Shower Door
Milford, CT-
Price Transparency
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Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Sliding Glass
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Full-Service Installations
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Commercial Windows
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Aluminum Window Frames
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Tempered Glass
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Custom Window Designs
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Glass Showers
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Residential Windows
DeBritos Home Improvement & Remodeling - Residential General Contractor
Watertown, CT-
Price Transparency
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Free assessment
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Educational Website
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Good Customer Service
Services Offered
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Custom Window Designs
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Glass Showers
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Commercial Windows
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Residential Windows
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Fast Delivery
Ener-G Tech, Inc.
Stratford, CT-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Commercial Windows
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Energy-Efficient Options
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Custom Window Designs
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Sliding Glass
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Glass Showers
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Residential Windows
Home Services at The Home Depot
North Haven, CT-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Aluminum Window Frames
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Commercial Windows
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Bay Windows
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Glass Showers
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Stained Glass
Allstate Windows
Rocky Hill, CT-
Free assessment
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Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Double-Hung
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Residential Windows
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Bay Windows
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Aluminum Window Frames
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Fast Delivery
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Custom Window Designs
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Commercial Windows
Home Services at The Home Depot
Bristol, CT-
Price Transparency
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Good Customer Service
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Free assessment
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Educational Website
Services Offered
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Stained Glass
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Commercial Windows
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Fast Delivery
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Bay Windows
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Residential Windows
Wallingford Glass
Wallingford, CT-
Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Commercial Windows
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Custom Window Designs
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Stained Glass
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Fast Delivery
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Double-Hung
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Residential Windows
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Tempered Glass
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Glass Showers
Peoples Products - HR40 Windows
Newington, CT-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Fast Delivery
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Commercial Windows
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Aluminum Window Frames
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Custom Window Designs
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Residential Windows
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Energy-Efficient Options
How Installing Energy-Efficient Windows in Guilford Saves You Money
Energy-efficient windows can benefit you in more than one way. Here are a few reasons you may want to think about making the switch:
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which filter out damaging UV rays, reducing fading of your furniture, carpet and other valuables.
- Save on energy bills: After you upgrade to energy-efficient windows, you can see a reduction in your bills by about 12% because you'll use less energy to heat or cool your home.
- Protect your investment: When your home is on the older side, your windows could also be outdated or damaged. Keeping your windows up to date is an important part of maintaining your property and its real estate value.
- Decrease your carbon footprint: You can reduce your carbon footprint by about 12% when you install Energy Star certified windows. In Guilford, that's about 147 pounds per year on average.
Estimated Cost of Window Replacement in Guilford
Windows come in different purposes, shapes and styles, so costs and services will differ tremendously depending on several factors. Below, we detail the typical cost and services that you can get from window replacement companies.
How Much Do New Windows Cost?
The national average cost to install one window is about $600 but can range anywhere from $200 to $1,200. But prices differ remarkably depending on the size of your home, complexity of the installation, your location and the quality of the company you choose. Many window companies also offer door replacements, which have a higher price tag.
Bear in mind that energy-efficient windows may cost more upfront, but Energy Star predicts the upgrade will save you between $101 and $583 a year when replacing single-pane windows and between $27 and $197 a year when replacing double-pane, clear glass windows. These savings vary based on your local climate, energy rates and individual home characteristics.
Costs will also vary based on the material of your frame. Aluminum frames cost the least. They're sturdy, light and easy to maintain, but provide poor insulation. Vinyl frames are a bit more expensive and provide good insulation. Composite frames made using wood fibers encased in plastic also provide good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They're also aesthetically pleasing and provide decent insulation for your home.
What Services do Window Installers Offer?
The first step when planning a window installation is to clarify whether you want a full-frame or pocket installation.
Full-frame installations are usually done when you want to change the style of your windows or your window has significant deterioration. With this service, your installers will replace the total window, including the trim, frame and sill. A pocket installation means replacing a window without taking out the complete frame, which tends to be cheaper than a full-frame installation.
Your window replacement company should be able to help you understand what's best for your needs. In Guilford, the decision will mostly depend on the age of your windows and if there's any damage. Wood can decay if it's not properly maintained over the years, so it's good to have a professional assess your frames and window sills.
Best Affordability
Window World
- Large serice area
- Low prices relative to competitors
- Great industry reputation
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
- More expensive than competition
Best for Businesses
Aeroseal Windows
- Manufactures products in-house
- Many years of experience
- Custom Designs
- No lifetime warranty
How We Choose the Best Window Installers in Guilford
In our hunt to make your home improvements easier and more eco-friendly in Guilford, the EcoWatch team landed on the above companies as the top window installation companies in the city. We have reviewed the best window installers in Guilford mostly 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 cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
Since this is a guide for Guilford, we paid more attention to companies that provide services to the city. There are certainly other reputable providers that didn't make our list because of the low odds that they would serve the average homeowner in Guilford.
Work Quality
We're certain that you're looking for professionals who do a great job installing windows. We've vetted each company in our guide to ensure its technicians are well-qualified and that the company has received tons of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another very important review factor. If the majority of customers don't have good things to say about their experience with a certain company, it won't be featured on EcoWatch.
Cost
This one is a give-and-take: similar to most services, cheap window companies won't always provide the highest quality service. Still, we want to make sure we're highlighting companies that offer a variety of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to Guilford's climate, homeowners will want to mitigate water damage, low efficiency and rot. We factored in local experience to reflect the ability of Guilford window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
Guilford, CT Window Replacement FAQs
How much should a window install cost?
The national average cost of replacing a window is about $600 but can range between $200 and $1,200, based on several factors. The price is often dependent on the type and material of the window, the size of the window and the location of your property. Also, bear in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
Which type of window should I get?
Generally, double-pane windows are more efficient than single-pane windows and windows that don't open are more efficient than windows that do. To be sure you'll get the most energy-efficient windows, look for models with the blue Energy Star certification attached to them — they're certified energy-efficient by the U.S. Department of Energy.
What services do window replacement companies provide?
Window installation professionals will do the entire process — from replacing old windows with new ones to cleaning up afterward. Additionally, a lot of companies offer window manufacturing, customization and repairs.
What time of year is a good time to replace my windows?
While you can install windows any time of year, warmer weather is typically better for replacing windows. In addition, it shouldn't be raining, because rain can make the installation more difficult.
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 together is the only way to see a noticeable difference. On the other hand, if you have just one or two windows that are broken or drafty, you can replace just those.