20 Best Window Companies in St. Clair, IL (2023 Reviews)
Looking to upgrade your windows? We've got all the information you need in this list of the top window installation companies.
We analyzed all the top-rated window companies in St. Clair 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
A review of the top window replacement companies in St. Clair may not seem like the most riveting article on EcoWatch, but trust us, windows have a more direct impact on your life than you might think. When it's the middle of summer, your old and leaky windows could be making your home more difficult to cool and costing you more in power bills.
That's also bad for the environment because the additional energy required by damaged windows increases your carbon footprint.
Unlike other sites, EcoWatch ranks window installation companies based on energy efficiency while also balancing cost, customer satisfaction and service area.
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 St. Clair
The EcoWatch Reviews team evaluated dozens of window companies in St. Clair to find the best ones for our readers. We assessed the companies based on energy-efficient offerings, coverage area, price, customer service, local experience 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 window installation company has been operating since 1995 and currently services 200 locations nationwide. Many positive reviews on customer review websites back the company's reputation.
It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsWindow World has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for Energy Star windows when inquiring. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in St. Clair?Though pricing information is not available on Window World’s website, it's known for offering some of the most affordable window installations around. Getting a free quote on its website is the best way to get more accurate information.

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 window installation company has been operating since 1995 and currently services nearly every state except Mississippi and West Virginia. Many positive reviews on customer review websites back the company's reputation.
It has established itself as a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for 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 St. Clair?Though pricing information is not available on Andersen’s website, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. Getting a free quote on its website is the best way to get more accurate information.

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 offers the best warranty in St. Clair. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has around 20 years of industry experience, and it currently serves 27 states nationwide. Its reputation is backed by all the positive reviews on customer review websites.
You may want to consider going with Universal if you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThe 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. Not all of Universal’s windows are Energy Star certified, so make sure you mention that you’d like Energy Star windows when inquiring.
How much does Universal Windows Direct cost in St. Clair?Universal doesn’t have any pricing information available on its website, but 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 request 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 window installation company has been operating since 2006 and currently services residents within 75 miles of its showrooms, which are in 13 states. Many positive reviews on customer review websites back the company's reputation.
It has established itself as a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsWindow Nation has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for Energy Star windows when inquiring. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.
How much does Window Nation cost in St. Clair?Though pricing information is not 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. Getting a free quote on its website is the best way to get more accurate information.
We aim to remain unbiased and transparent by including pros and cons for every installer. Additionally, any partnerships do not influence our rankings.
More Window Companies in St. Clair
Renewal by Andersen
Maryland Heights, MO-
Timely Service
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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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Window Replacement
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Residential Windows
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Glass Showers
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Sliding Glass
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Commercial Windows
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Custom Window Designs
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Double-Hung
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Stained Glass
Champion Replacement Windows of St. Louis
Fenton, MO-
Good Customer Service
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Price Transparency
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Free assessment
Services Offered
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Residential Windows
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Double-Hung
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Sliding Glass
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Window Replacement
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Bay Windows
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Custom Window Designs
Window World of St. Louis
Earth City, MO-
Timely Service
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Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Commercial Windows
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Residential Windows
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Fast Delivery
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Energy-Efficient Options
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Double-Hung
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Sliding Glass
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Glass Showers
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Bay Windows
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Custom Window Designs
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Window Replacement
Window Nation
Overland, MO-
Good Customer Service
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Educational Website
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Price Transparency
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Free assessment
Services Offered
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Bay Windows
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Double-Hung
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Energy-Efficient Options
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Window Replacement
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Stained Glass
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Custom Window Designs
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Sliding Glass
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Residential Windows
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Glass Showers
Rapid Repair Pro of O'Fallon
O'Fallon, IL-
Educational Website
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Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Commercial Windows
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Double-Hung
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Sliding Glass
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Window Repair
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Residential Windows
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Window Replacement
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Fast Delivery
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Glass Showers
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Custom Window Designs
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Stained Glass
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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Fast Delivery
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Residential Windows
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Window Replacement
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Custom Window Designs
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Glass Showers
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Energy-Efficient Options
Millstadt Glass Inc
Millstadt, IL-
Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Window Repair
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Fast Delivery
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Custom Window Designs
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Commercial Windows
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Residential Windows
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Window Replacement
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Glass Showers
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Sliding Glass
Granite City Glass
Granite City, IL-
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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Custom Window Designs
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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
Missouri Glass Company
St. Louis, MO-
Good Customer Service
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Timely Service
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Educational Website
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Price Transparency
Services Offered
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Commercial Windows
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Residential Windows
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Tempered Glass
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Window Replacement
Windoor - Unlimited
Troy, IL-
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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Window Replacement
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Residential Windows
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Custom Window Designs
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Fast Delivery
Gallagher Bros Construction
St. Louis, MO-
Timely Service
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Free assessment
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Commercial Windows
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Custom Window Designs
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Window Replacement
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Residential Windows
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Fast Delivery
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Full-Service Installations
Edwardsville Glass
Edwardsville, IL-
Free assessment
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Price Transparency
Services Offered
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Glass Showers
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Residential Windows
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Custom Window Designs
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Window Repair
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Window Replacement
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Commercial Windows
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Tempered Glass
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Sliding Glass
Viviano Windows & Door
Webster Groves, MO-
Price Transparency
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Timely Service
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Good Customer Service
Services Offered
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Energy-Efficient Options
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Residential Windows
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Window Replacement
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Custom Window Designs
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Stained Glass
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Glass Showers
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Commercial Windows
Home Services at The Home Depot
St. Louis, MO-
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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Fast Delivery
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Commercial Windows
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Window Replacement
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Stained Glass
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Custom Window Designs
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Residential Windows
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Glass Showers
Colonial Construction
St. Louis, MO-
Educational Website
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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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Custom Window Designs
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Fast Delivery
Integrity Restoration - Home Remodeling
Brentwood, MO-
Price Transparency
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Free assessment
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Timely Service
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Educational Website
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Good Customer Service
Services Offered
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Residential Windows
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Custom Window Designs
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Window Replacement
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Commercial Windows
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Stained Glass
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Fast Delivery
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Glass Showers
Penny Window
St. Louis, 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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Double-Hung
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Sliding Glass
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Energy-Efficient Options
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Residential Windows
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Window Repair
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Commercial Windows
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Custom Window Designs
Banner Construction
St. Louis, MO-
Educational Website
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Price Transparency
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Good Customer Service
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Timely Service
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Free assessment
Services Offered
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Full-Service Installations
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Window Replacement
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Residential Windows
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Custom Window Designs
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Double-Hung
Fischer Window & Door Store
Brentwood, MO-
Educational Website
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Price Transparency
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Good Customer Service
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Free assessment
Services Offered
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Custom Window Designs
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Commercial Windows
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Window Replacement
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Residential Windows
Coldstream Exteriors
St. Louis, 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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Aluminum Window Frames
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Residential Windows
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Window Replacement
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Custom Window Designs
Calculate how much you can expect to pay for window installation and replacement in St. Clair, 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 St. Clair Saves You Money
There are several benefits of switching to energy-efficient windows. A few reasons you may want to consider making the switch are the following:
- Protect your investment: If your home is on the older side, your windows are most likely outdated. Updating your windows can make your home more comfortable and also help raise the value of your house if you decide to sell.
- Save money on power bills: Since energy-efficient windows reduce how much energy you need to heat or cool your home, the switch can help you save about $316 annually on your energy bills in St. Clair.
- Better temperature control in your home: When you reside in a place like St. Clair where the winters can get very cold, you often have to depend on your heater to keep your home warm. Energy-efficient windows can lower how hard your heater needs to work to heat your home.
- Protect your valuables: The low-emissivity coatings on many Energy Star certified windows help prevent damage from the sun's UV rays to your floors, carpets and furniture.
Estimated Cost of Window Replacement in St. Clair
Windows come in different shapes and sizes, so costs and services will differ considerably. Here are the average costs and the primary services that you can find from the average window installation company.
How Much Do New Windows Cost?
The average cost to replace one window is about $600 but can range anywhere from $200 to $1,200. These amounts are based on the specifics of your installation, including type, the location of your home, number of windows, material, size and more.
It's important to remember that windows with higher efficiency may cost more initially but can save you hundreds of dollars via returns on your energy bills. Investing in Energy Star certified windows can save St. Clair homeowners $316+ a year when replacing single-pane windows.
We recommend getting free quotes from several window installation companies to find the right windows and the company that works best for you.
What Services do Window Installers Offer?
The first thing to ask yourself when planning on installing new windows is: Do you want a full-frame installation or a pocket installation?
Full-frame installations are usually recommended when you want a new style or your window has a lot of rot or deterioration. With this service, your professionals will replace the entire window, including the trim, frame and sill. A pocket installation entails replacing a window without replacing the frame. This means instead of taking out the whole window and reinstalling it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window installation company will be able to help you figure out what's best for your needs. In St. Clair, the decision will mostly depend on how old your windows are and if there's any moisture damage. Wood can decay if it's not maintained properly over the years, so it's good 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 St. Clair
EcoWatch reviews differ from most reviews since we examine these companies through a sustainability lens. Along with energy efficiency, we reviewed window companies all across the state and ranked them based on the following methodology:
Service Area
Because this is a guide for St. Clair, we paid more attention to companies that serve the city. There are other reputable providers that didn't make our list because of the low odds that they would serve the average homeowner in St. Clair.
Work Quality
When picking 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 opt for. We do rate window installers higher if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent customer feedback to find the companies with the most consistent customer satisfaction. Customer satisfaction might be the most important factor, as it indicates the quality of services across most other categories, including quality of parts, quality of installation, warranty, cost, professionalism and more.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing the prices of providers, we gave higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed, windows are a hefty investment, so you'll want to be certain that investment is well protected. Window installation companies that provide lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have been in the industry for quite some time. Window installers that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
St. Clair, IL Window Replacement FAQs
How much should window installation cost?
The national average cost of replacing one window is around $600 but can range from $200 to $1,200, depending on a variety of factors. The price is usually dependent on the location of your property, the type and material of the window and the size of the window. Also, remember that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What are the kinds of windows?
The most common kinds of windows for homes include: slider windows, bay windows, casement windows, transom windows, awning windows, picture windows and double-hung and single-hung windows.
Can you replace your own windows?
If you're handy and have the time and patience to do the job right, it's possible to install your own windows. However, if you don't have the time or experience, we don't recommend doing it on your own.
How often should you replace your windows?
Windows usually have a lifespan of 20 to 30 years, but anytime you see damage on your windows, it's a good time to have them looked at by an expert to see if they are in need of a repair or replacement.