20 Best Window Companies in Dupo, IL (2023 Reviews)
If you're thinking about getting new windows, our list of the top window installation companies can help.
We analyzed all the top-rated window companies in Dupo and selected the best 20 based on:
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Customer reviews
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Window installation expertise
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Popularity with home-owners like you
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Updated September 15, 2023
Why you can trust EcoWatch
Although clean energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your home's efficiency can also have a large impact on home energy conservation. Drafty, leaky windows could lead to spending more on electric bills during the winter or summer months.
Replacement windows improve your home's insulation, not only making you and your family more comfortable during the summer and winter, but also saving you some money and helping the environment.
So if you're constructing a new home, renovating or replacing your windows in Dupo, you've found the best place to get started.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
Best Window Installation & Replacement Companies in Dupo
The EcoWatch team evaluated dozens of installers across the country to find the best window companies for our readers. The installers we've reviewed in this article scored best in our categories: energy-efficient offerings, price, customer service, availability and more.

Window World
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EnergyStar Partner
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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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Lifetime warranty
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Quality of service will depend on your area
Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. This company has 27 years of experience in the windows industry, and it has become one of the most reputable companies in Dupo. Hundreds of positive reviews from customers online back the company's reputation.
You may want to consider going with Window World 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.
Energy Efficiency of Window World WindowsWindow World is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make 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 Dupo?Window World does not display prices on its website, but it's known for offering some of the most affordable window installations around. For more detailed information on the cost, you can ask for a quote from the company.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Member of US Green Building Council
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Manufactures products in-house
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No lifetime warranty
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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. This company has 27 years of experience in the windows industry, and it has become one of the most reputable companies in Dupo. Hundreds of positive reviews from customers online back the company's reputation.
You may want to consider going with Andersen if you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.
How much does Renewal by Andersen cost in Dupo?Andersen does not display prices 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 detailed information on the cost, you can ask for a quote from the company.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct provides the best warranty in Dupo. Universal has around 20 years of experience in the industry, and it currently serves 27 states nationwide.
Universal may be the company for you if you're looking for one that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsUniversal Windows Direct carries some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you mention that you want high-quality Energy Star windows when inquiring. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in Dupo?Prices are not available on Universal’s website, as the cost of window replacement depends on how many and what type(s) of windows you need. However, installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. The best way to get more accurate information is to get a free 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 is 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 windows industry, and it has become one of the most reputable companies in Dupo. Hundreds of positive reviews from customers online back the company's reputation.
You may want to consider going with Window Nation if you're looking for a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsWindow Nation is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company’s windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Window Nation representative when inquiring about services.
How much does Window Nation cost in Dupo?Window Nation does not display prices on its website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. For more detailed information on the cost, you can ask for a quote from the company.
Please note that the companies in this section are national, which means the quality of the service may vary depending on your local team. We have tried to remain unbiased and transparent by listing both pros and cons for each provider.
More Window Companies in Dupo
Renewal by Andersen
Maryland Heights, MO-
Good Customer Service
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Timely Service
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Price Transparency
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Educational Website
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Free assessment
Services Offered
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Glass Showers
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Sliding Glass
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Commercial Windows
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Double-Hung
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Stained Glass
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Residential Windows
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Window Replacement
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Custom Window Designs
Champion Replacement Windows of St. Louis
Fenton, MO-
Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Custom Window Designs
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Window Replacement
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Bay Windows
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Sliding Glass
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Double-Hung
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Residential Windows
Window World of St. Louis
Earth City, MO-
Educational Website
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Timely Service
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Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Double-Hung
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Energy-Efficient Options
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Bay Windows
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Fast Delivery
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Glass Showers
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Sliding Glass
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Residential Windows
Window Nation
Overland, MO-
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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Stained Glass
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Energy-Efficient Options
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Glass Showers
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Window Replacement
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Custom Window Designs
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Residential Windows
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Sliding Glass
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Bay Windows
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Double-Hung
Gallagher Bros Construction
St. Louis, MO-
Timely Service
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Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Full-Service Installations
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Fast Delivery
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Residential Windows
Integrity Restoration - Home Remodeling
Brentwood, MO-
Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
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Timely Service
Services Offered
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Custom Window Designs
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Stained Glass
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Fast Delivery
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Commercial Windows
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Glass Showers
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Residential Windows
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Window Replacement
Colonial Construction
St. Louis, MO-
Educational Website
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Good Customer Service
Services Offered
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Window Replacement
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Residential Windows
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Fast Delivery
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Custom Window Designs
Missouri Glass Company
St. Louis, MO-
Good Customer Service
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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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Tempered Glass
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Commercial Windows
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Window Replacement
Viviano Windows & Door
Webster Groves, MO-
Good Customer Service
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Price Transparency
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Timely Service
Services Offered
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Custom Window Designs
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Window Replacement
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Residential Windows
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Stained Glass
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Energy-Efficient Options
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Commercial Windows
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Glass Showers
Home Services at The Home Depot
Brentwood, MO-
Good Customer 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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Glass Showers
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Stained Glass
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Window Replacement
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Residential Windows
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Custom Window Designs
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Commercial Windows
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Fast Delivery
Jacob Sunrooms, Exteriors & Baths
Fairview Heights, IL-
Educational Website
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Price Transparency
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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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Energy-Efficient Options
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Fast Delivery
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Window Replacement
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Glass Showers
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Custom Window Designs
Millstadt Glass Inc
Millstadt, IL-
Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Window Replacement
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Residential Windows
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Sliding Glass
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Custom Window Designs
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Commercial Windows
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Glass Showers
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Fast Delivery
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Window Repair
Coldstream Exteriors
St. Louis, MO-
Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Window Replacement
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Aluminum Window Frames
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Custom Window Designs
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Residential Windows
Fischer Window & Door Store
Brentwood, MO-
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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Custom Window Designs
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Residential Windows
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Window Replacement
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Commercial Windows
Building Envelope Experts
Fenton, MO-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
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Timely Service
Services Offered
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Window Replacement
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Sliding Glass
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Residential Windows
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Energy-Efficient Options
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Fast Delivery
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Custom Window Designs
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Bay Windows
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Double-Hung
Mills Window & Door Showroom
Fenton, MO-
Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Residential Windows
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Window Replacement
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Commercial Windows
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Custom Window Designs
Granite City Glass
Granite City, IL-
Educational Website
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Free assessment
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Price Transparency
Services Offered
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Custom Window Designs
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Glass Showers
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Full-Service Installations
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Residential Windows
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Commercial Windows
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Window Replacement
Alenco Inc.
Fenton, MO-
Timely Service
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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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Window Replacement
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Commercial Windows
Banner Construction
St. Louis, MO-
Good Customer Service
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Free assessment
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Price Transparency
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Timely Service
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Educational Website
Services Offered
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Full-Service Installations
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Custom Window Designs
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Double-Hung
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Residential Windows
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Window Replacement
American Roofing and Exteriors
Fenton, MO-
Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Aluminum Window Frames
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Custom Window Designs
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Commercial Windows
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Energy-Efficient Options
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Window Replacement
Calculate how much you can expect to pay for window installation and replacement in Dupo, IL using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in Dupo Saves You Money
Energy-efficient windows can offer benefits in more than one way. Here are some reasons you may want to take the plunge and make the switch:
- Save on energy bills: Once you install energy-efficient windows, you can see a reduction in your bills by about 12% because you'll require less energy to heat or cool your house.
- Better temperature control in your home: When you live in a city like Dupo where the winters can get very cold, you often need to rely on your heater to keep your house warm. Energy-efficient windows can reduce how much heat is lost through your windows when heating your home.
- Protect your investment: If you have an older home, your windows are most likely outdated. Updating your windows can make your home more comfortable and also help increase the value of your property if you decide to sell.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
Estimated Cost of Window Replacement in Dupo
Windows come in various styles, purposes and shapes, so costs and services will differ tremendously depending on several factors. Below, we detail the average cost and services that you'll find from window installers.
How Much Do New Windows Cost?
According to our research, the national average cost of installing a single window is around $600. However, window installation costs can range from $200 to $1,200 a window. Costs will differ significantly based on the quality of your products, the number of windows you need, your location and the current condition of your home. A lot of window companies also offer replacement door installations and other add-ons like coating, shutters, baths and more. These extra services will increase overall project costs.
Whether or not you want to install energy-efficient windows is another factor that will determine the cost. These will usually cost more than other windows, but on the other hand, you can save about $316 a year on your energy bills in Dupo.
How much your window installation costs will also vary depending on the kind of window material you choose for the frames. Wood windows are generally the most expensive, although it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.
What Services do Window Installers Offer?
In general, there are two kinds of window installation services companies offer: full-frame and pocket installations.
Full-frame installations involve replacing the full window, including the sill, frame and trim. You most likely need a full-frame installation when you want a new style or your window has considerable damage or rot. Because full-frame installations are more involved, they will raise the total cost. A pocket installation involves replacing a window without replacing the frame. This means instead of tearing out the whole window and rebuilding it, the installer will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window replacement company should be able to help you decide what's best for your needs. In Dupo, the decision will mostly depend on the age of your home and if there's any moisture damage. Wood can decay if not properly maintained over the years, so it's a good idea to have a professional check your frames and window sills.
Best Availability
Renewal by Andersen
- Great industry reputation
- Member of US Green Building Council
- Manufactures products in-house
Window Veteran
Window World
- EnergyStar Partner
- Wide variety of products and services
- Lifetime Warranty
How We Choose the Best Window Installers in Dupo
EcoWatch is different from most reviewers, as we look at these companies through a sustainability lens. We have reviewed the best window replacement companies in Dupo primarily based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows have been shown to cut your electricity bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
This one is pretty self-explanatory, but we've chosen to highlight window installers that serve Dupo so you can find the right window installation company near you.
Work Quality
We're willing to bet that you're looking for professionals who do a great job installing windows. We've vetted each installer featured on this list to ensure its contractors are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another super important review factor. If the majority of customers don't have nice feedback about their experience with a certain company, it won't be featured on EcoWatch.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing providers' prices, we awarded higher points to companies with reasonable prices and accessible financing rather than "cheaper" services.
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
Because of Dupo's climate, homeowners will want to mitigate rot, low efficiency and water damage. We factored in local experience to reflect the ability of Dupo window companies to prepare homes for the climate. If a company has less than 10 years of experience, it loses points in this category.
Dupo, IL Window Replacement FAQs
What is the typical cost to install new windows in a home?
The national average cost of installing one window is around $600 but can range between $200 and $1,200, based on a few different factors. The price is generally influenced by the size of the window, the type and material of the window and the location of your property. Also, keep in mind that energy-efficient windows may cost more upfront but can save you a decent amount of money a year in energy bills.
What type of window is the most energy-efficient?
A window's energy efficiency is influenced by several factors, including the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are often the most energy-efficient and are certified by the U.S. Department of Energy.
Can you install your own windows?
If you're handy and know how to replace a window, you may be able to install your own windows. But if you don't have the time or experience, we don't recommend trying it.
How often do you need to replace windows?
Windows have an average lifespan of about 20 to 30 years. If your windows are older than that, they probably need to be replaced. Apart from that, if your windows have damage anywhere on them, or they have become difficult to open or close, they may need to be replaced.