21 Best Window Replacement Companies in Ofallon, IL (2023 Reviews)
Window Companies Near Me
Thinking about improving your home's appearance? The best window replacement companies can help.
We analyzed all the top window installers in Ofallon and selected the top 21 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
Whether you're doing renovations or have windows that need repairs, windows play a crucial role in conserving electricity in your home. When it's the middle of summer, your outdated and leaky windows could be making your home harder to cool and more uncomfortable for you.
Replacement windows improve your home's insulation, not only making you more comfortable during extreme temperatures, but also saving you money and helping the environment.
Efficient windows are particularly important in Ofallon, where the temperature varies throughout the year. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $316 each year.
Best Affordability
Window World
- Low prices relative to competitors
- Large serice area
- Lifetime warranty
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Manufactures products in-house
- Member of US Green Building Council
- No lifetime warranty
Best Warranty
Universal Windows Direct
- Makes charitable contributions
- Wide variety of products and services
- Manufactures products in-house
- Limited service area
Best Window Replacement Companies in Ofallon
The EcoWatch team evaluated several window installation companies across Ofallon to narrow our list down to the top ones. The providers we've mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, price, customer service and beyond.

Window World
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Low prices relative to competitors
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Large serice area
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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 window installation industry, and it has become one of the most reputable companies in Ofallon.
You may want to consider opting for Window World if you're interested in 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 offering a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Ofallon?Although pricing information is not readily available on Window World's website, it's known for offering some of the most affordable window installations around. For more detailed information on the cost, you can inquire about a quote from the company.

Renewal by Andersen
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Award-winning company
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Manufactures products in-house
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Member of US Green Building Council
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No lifetime warranty
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has been in the window installation industry for around 27 years. Its reputation is backed by many positive reviews from customers online.
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 offers 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 Ofallon?Pricing details are not available on Andersen's website because the cost of window installment varies greatly based on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more accurate information on the cost, you can get a quote from the company.

Universal Windows Direct
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Makes charitable contributions
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Wide variety of products and services
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Manufactures products in-house
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Limited service area
Universal Windows Direct provides the best warranty in Ofallon. This company has been operating since 2002 and currently provides services to 27 states nationwide. Hundreds of positive reviews on customer review websites back the provider's reputation.
It 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 ask for 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 Ofallon?Universal doesn't have any prices 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. Requesting a free quote on its website is the best way to know for sure.

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 Ofallon. Window Nation has been in the window installation business for around 16 years. The company has a lot of glowing reviews from customers online.
Window Nation may be the company for you if you're looking for one that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsWindow Nation's commitment to sustainability shows in its energy-efficient window offerings. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.
How much does Window Nation cost in Ofallon?Pricing information is 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. The best way to get more accurate information is to request a free quote from the company.
We aim to stay unbiased and transparent by including pros and cons for each company we review. Additionally, our rankings are not affected by any partnerships.
More Window Replacement Companies in Ofallon
Penny Window
St. Louis, MO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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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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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
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Tempered Glass
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Double-Hung
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Commercial Windows
Two Blind Guys
Des Peres, 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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Energy-Efficient Options
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
Chaney Windows And Doors
Maryland Heights, MO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Energy-Efficient Options
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Commercial Windows
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Double-Hung
Window Nation
Overland, MO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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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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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Double-Hung
Empire Supply Co
St. Louis, 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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Energy-Efficient Options
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Glass Showers
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Tempered Glass
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Double-Hung
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Commercial Windows
Masonry & Glass Systems Inc
St. Louis, MO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Double-Hung
Gallagher Bros Construction
St. Louis, MO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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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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Full-Service Installations
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
Triton Exteriors
St. Louis, MO-
Good Customer Service
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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
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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Fast Delivery
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Commercial Windows
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Double-Hung
Sears Window Replacement
Bridgeton, MO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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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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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Double-Hung
Mr. Handyman of Central St. Louis County
Maryland Heights, MO-
Good Customer Service
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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
Services Offered
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Glass Showers
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Custom Window Designs
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Stained Glass
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Residential Windows
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Commercial Windows
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Double-Hung
Home Services at The Home Depot
Brentwood, 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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Glass Showers
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
STL Windows and Doors
St. Louis, MO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
Glass & More Inc. Low price glass repair!
Belleville, IL-
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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Glass Showers
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Sliding Glass
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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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Double-Hung
Kirkwood Glass Co
Kirkwood, MO-
Good Customer Service
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Price Transparency
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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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Full-Service Installations
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Residential Windows
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Fast Delivery
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Tempered Glass
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Double-Hung
STL Design and Build
Maryland Heights, MO-
Good Customer Service
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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
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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Fast Delivery
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Double-Hung
Crystal Windows & Door Systems
Fenton, MO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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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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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Fast Delivery
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Commercial Windows
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Double-Hung
Building Envelope Experts
Fenton, MO-
Good Customer Service
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Free assessment
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Educational Website
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Price Transparency
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Timely Service
Services Offered
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Energy-Efficient Options
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Residential Windows
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Fast Delivery
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Double-Hung
Martin Glass Company
Belleville, IL-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
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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Full-Service Installations
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Residential Windows
Glass Doctor of Greater St. Louis
St. Louis, MO-
Good Customer Service
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Price Transparency
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Educational Website
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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Fast Delivery
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Tempered Glass
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Double-Hung
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Commercial Windows
Martin Glass Company
St. Louis, MO-
Good Customer Service
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Award-Winning
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Free assessment
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Educational Website
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Price Transparency
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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Full-Service Installations
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Residential Windows
Home Services at The Home Depot
St. Louis, 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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Glass Showers
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Bay Windows
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Custom Window Designs
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Stained Glass
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Residential Windows
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Fast Delivery
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Commercial Windows
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Double-Hung
How Installing Energy-Efficient Windows in Ofallon Saves You Money
There are quite a few benefits of switching to energy-efficient windows. Some reasons you may want to consider making the switch include the following:
- Decrease your carbon footprint: You can reduce your carbon footprint by about 12% when you install Energy Star certified windows. In Ofallon, that's about 642 pounds per year on average.
- 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.
- Save on energy bills: Since energy-efficient windows decrease the amount of energy needed to heat or cool your home, the switch can help you save about $316 annually on your energy bills in Ofallon.
- Protect your investment: The older your home is, the more likely you are to benefit from switching to energy-efficient windows. Older homes tend to have windows that are outdated, leaky or maybe even damaged in some way. Updating your windows could help raise the value of your property if you decide to sell.
Estimated Cost of Window Replacement in Ofallon
Windows come in varying purposes, shapes and styles, so costs and services will vary greatly based on your project. Below, we go over the average cost and services that you'll find from window installation companies.
How Much Do New Windows Cost?
Typically, homeowners in Ofallon can expect that most window installations will cost between $250 and $1,200, with the average cost at about $600. But costs will differ considerably based on your location, the number of windows you need, the current condition of your home and the quality of your products. Many window companies also offer door installations and other add-ons like baths, shutters, coating and more. These extra services will increase your overall project costs.
Keep in mind that energy-efficient windows may have a higher price, but Energy Star estimates the upgrade will save you between $101 and $583 a year when you replace single-pane windows and between $27 and $197 a year when you replace double-pane, clear glass windows. Your exact savings will vary depending on your local climate, energy rates and individual home characteristics.
Getting free quotes from multiple companies is the best way to find out which one is right for you.
What Services do Window Installers Offer?
Generally, there are two types of window installation services companies offer: full-frame and pocket installations.
A full-frame installation replaces the complete window, including the windowsill, frame, trim and the window panes. As this type of installation requires more time, it will cost more than a pocket installation. Pocket installations are on the simpler end and won't carry as large a bill because they involve simply replacing the window within its existing frame. But if the frame has any damage or rot, you may have to get a full-frame installation instead.
If you're still debating which kind of installation you need, you can ask your provider and get their advice. The choice mostly is influenced by the age of your window frames and if there's any damage.
Best Affordability
Window World
- Low prices relative to competitors
- Large serice area
- Lifetime warranty
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Award-winning company
- Manufactures products in-house
- Member of US Green Building Council
- No lifetime warranty
Best Warranty
Universal Windows Direct
- Makes charitable contributions
- Wide variety of products and services
- Manufactures products in-house
- Limited service area
How We Choose the Best Window Installers in Ofallon
In our hunt to find the most reliable, eco-friendly window installers in Ofallon, the EcoWatch Reviews team examined dozens of companies before settling on these. Along with energy efficiency, we assessed several window installers in Ofallon and ranked them using the following methodology:
Service Area
This one is self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find a quality window installation company near you.
Work Quality
We're willing to bet that you're looking for a company to do a great job installing windows. We've vetted each company included in our guide to make sure its contractors are well-qualified and that the company has gotten tons of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent customer feedback to determine the companies with the most consistent customer satisfaction. Customer satisfaction may be the factor we place the most value on, as it reflects the quality of services across most other categories, including quality of installation, quality of parts, professionalism, warranty, cost and more.
Cost
This one is a give-and-take: similar to most services, cheap window installation companies are not going to provide the highest quality service. Still, we want to make sure we're highlighting companies that provide a range of price and financing options so they're accessible to most homeowners.
Warranty
As discussed, windows are a sizable investment, so you'll want to make sure that investment is well protected. Window installation companies with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a good track record in the industry. Window installers that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Ofallon, IL Window Replacement FAQs
How much should a window install cost?
The average cost of replacing a single window ranges from $450 to $650. There are many factors that influence the cost, including local labor costs, the materials used in designing the windows, your property's location, the number of windows, how energy-efficient the windows are and styles and sizes of windows.
What are the most common types of replacement windows?
The most common types of windows for homes are casement windows, awning windows, bay windows, transom windows, picture windows, slider windows and double-hung and single-hung windows.
Can I install my 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. But if you don't have the time or know-how, we recommend hiring a professional.
How often should you replace windows?
Windows usually have a lifespan of 20 to 30 years, but anytime you see damage on your windows, it's a good idea to have them checked by an expert to see if they need any repairs or replacements.
Should I replace all my windows at once?
If you're upgrading your windows to get more efficient windows, replacing all your windows at the same time is the only way to see a noticeable difference. However, if you have just one or two windows that are damaged or leaky, you can replace just those.