24 Best Window Replacement Companies in Ofallon, MO (2023 Reviews)
Window Companies Near Me
When the time comes to replace your windows, our reviews of the top window installation companies can help you find the right provider for you.
We analyzed all the top window installers in Ofallon and selected the top 24 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
A review of the top window installation companies in Ofallon may not seem like the most captivating article on the EcoWatch site, but trust us, windows have more of an impact on your life than you might realize. Traditional or damaged windows can cost you in energy bills. As a matter of fact, the Department of Energy estimates that about 30% of your home's heat or cool air could be lost through your windows.
Replacement windows improve the insulation in your home, not only making you and your family more comfortable during the summer and winter, but also saving you money and helping the environment.
Efficient windows are especially 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 $382 a year.
Best Affordability
Window World
- Large serice area
- Lifetime warranty
- EnergyStar Partner
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Award-winning company
- Great industry reputation
- More expensive than competition
Best for Residential Windows
Window Nation
- Wide variety of products and services
- Manufactures products in-house
- Award-winning company
- Installation not covered by warranty
Best Window Replacement Companies in Ofallon
The EcoWatch Reviews team evaluated dozens of installers in Ofallon to find the best window replacement companies for our readers. The installers mentioned in this article passed our review standards for energy-efficient offerings as well as price, customer service, local expertise and beyond.

Window World
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Large serice area
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Lifetime warranty
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EnergyStar Partner
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Quality of service will depend on your area
Window World offers windows expertise in Ofallon. It's the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has over 27 years of experience in the windows industry, and it currently provides services to 200 locations nationwide.
If you're looking for a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital, this may be the provider for you.
Energy Efficiency of Window World WindowsIts high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home. Not all of Window World's windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Window World cost in Ofallon?While prices are not readily available on Window World's website, it's known for offering some of the most affordable window installations around. If you'd like to know for sure, you can inquire about a quote on the company's website.

Renewal by Andersen
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Manufactures products in-house
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Award-winning company
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Great industry reputation
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More expensive than competition
Renewal by Andersen is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the windows industry, and it currently provides services to nearly every state except Mississippi and West Virginia. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
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 WindowsA handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019. Not all of Andersen's offerings are Energy Star certified, so make sure you mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Ofallon?Andersen doesn't have any pricing information available 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. The best way to know for sure is to ask for a free quote from the company.

Window Nation
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Wide variety of products and services
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Manufactures products in-house
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Award-winning company
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Installation not covered by warranty
Window Nation is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has been in the window installation business for about 16 years. The company has hundreds of glowing reviews from customers on online review websites.
It 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to 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 Ofallon?Prices aren't mentioned on Window Nation's 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. Requesting a free quote on its website is the best way to know for sure.

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 is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has been in the window business for around 20 years. Its reputation is backed by many positive reviews from customers online.
It has established itself as a company that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThere are a wide range of window types that Universal Windows Direct offers, some of which are Energy Star products. 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?Although pricing information is not readily available on Universal's website, 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 get more accurate information.
We try to remain unbiased and transparent by describing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.
More Window Replacement Companies in Ofallon
The Glass Guru
Wentzville, MO-
Educational Website
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Good Customer Service
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Free assessment
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Award-Winning
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Price Transparency
Services Offered
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Full-Service Installations
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Glass Showers
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Double-Hung
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Residential Windows
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Commercial Windows
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Aluminum Window Frames
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Tempered Glass
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Stained Glass
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Custom Window Designs
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Sliding Glass
The Blind Broker of St. Louis
St Peters, MO-
Free assessment
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Good Customer Service
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Price Transparency
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Award-Winning
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Educational Website
Services Offered
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Stained Glass
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Glass Showers
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Bay Windows
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Full-Service Installations
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Residential Windows
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Commercial Windows
Window World of St. Louis
Earth City, MO-
Educational Website
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Good Customer Service
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Timely Service
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Free assessment
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Price Transparency
Services Offered
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Energy-Efficient Options
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Bay Windows
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Sliding Glass
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Custom Window Designs
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Fast Delivery
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Double-Hung
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Residential Windows
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Commercial Windows
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Glass Showers
Two Blind Guys
Chesterfield, MO-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Bay Windows
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Energy-Efficient Options
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Stained Glass
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Residential Windows
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Aluminum Window Frames
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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
Chaney Windows And Doors
Maryland Heights, MO-
Good Customer Service
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Price Transparency
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Free assessment
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Award-Winning
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Educational Website
Services Offered
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Double-Hung
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Custom Window Designs
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Commercial Windows
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Sliding Glass
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Bay Windows
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Residential Windows
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Energy-Efficient Options
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Stained Glass
Two Blind Guys
Des Peres, 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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Bay Windows
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Commercial Windows
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Glass Showers
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Stained Glass
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Aluminum Window Frames
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Custom Window Designs
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Sliding Glass
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Residential Windows
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Energy-Efficient Options
Freedom Restoration and Roofing
Warrenton, MO-
Educational Website
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Free assessment
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Price Transparency
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Timely Service
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Good Customer Service
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Award-Winning
Services Offered
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Residential Windows
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Glass Showers
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Double-Hung
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Full-Service Installations
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Commercial Windows
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Fast Delivery
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Custom Window Designs
Budget Blinds of Clayton & University City, West & South St. Louis
Manchester, 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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Double-Hung
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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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Energy-Efficient Options
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Glass Showers
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Aluminum Window Frames
Window Nation
Overland, MO-
Free assessment
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Price Transparency
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Award-Winning
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Educational Website
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Good Customer Service
Services Offered
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Sliding Glass
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Glass Showers
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Energy-Efficient Options
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Bay Windows
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Custom Window Designs
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Residential Windows
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Stained Glass
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Double-Hung
Maris Home Improvements
Chesterfield, MO-
Free assessment
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Timely Service
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Price Transparency
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Award-Winning
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Good Customer Service
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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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Double-Hung
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Commercial Windows
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Fast Delivery
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Glass Showers
Lakeside Renovation & Design
Chesterfield, MO-
Timely Service
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Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
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Award-Winning
Services Offered
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Glass Showers
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Residential Windows
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Full-Service Installations
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Fast Delivery
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Custom Window Designs
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Commercial Windows
Sears Window Replacement
Bridgeton, 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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Award-Winning
Services Offered
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Residential Windows
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Stained Glass
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Custom Window Designs
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Double-Hung
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Bay Windows
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Energy-Efficient Options
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Sliding Glass
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Glass Showers
Mr. Handyman of Central St. Louis County
Maryland Heights, MO-
Award-Winning
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Price Transparency
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Timely Service
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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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Glass Showers
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Residential Windows
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Stained Glass
Home Services at The Home Depot
Brentwood, MO-
Good Customer Service
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Price Transparency
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Free assessment
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Educational Website
Services Offered
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Custom Window Designs
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Stained Glass
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Glass Showers
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Commercial Windows
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Fast Delivery
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Residential Windows
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Bay Windows
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Sliding Glass
STL Windows and Doors
St. Louis, MO-
Price Transparency
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Free assessment
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Good Customer Service
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Educational Website
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Timely Service
Services Offered
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Sliding Glass
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Custom Window Designs
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Double-Hung
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Bay Windows
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Commercial Windows
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Residential Windows
All About Blinds Etc., Inc.
O'Fallon, MO-
Free assessment
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Good Customer Service
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Price Transparency
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Educational Website
Services Offered
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Commercial Windows
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Glass Showers
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Residential Windows
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Sliding Glass
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Custom Window Designs
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Bay Windows
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Energy-Efficient Options
STL Design and Build
Maryland Heights, MO-
Price Transparency
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Good Customer Service
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Award-Winning
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Educational Website
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Timely Service
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Free assessment
Services Offered
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Custom Window Designs
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Fast Delivery
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Double-Hung
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Residential Windows
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Glass Showers
Kirkwood Glass Co
Kirkwood, MO-
Good Customer Service
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Educational Website
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Price Transparency
Services Offered
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Glass Showers
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Double-Hung
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Full-Service Installations
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Residential Windows
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Sliding Glass
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Custom Window Designs
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Tempered Glass
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Fast Delivery
Crystal Windows & Door Systems
Fenton, MO-
Good Customer Service
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Price Transparency
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Free assessment
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Timely Service
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Educational Website
Services Offered
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Residential Windows
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Commercial Windows
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Custom Window Designs
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Energy-Efficient Options
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Glass Showers
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Double-Hung
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Fast Delivery
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Aluminum Window Frames
Spectrum Glass & Tinting
O'Fallon, MO-
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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Full-Service Installations
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Residential Windows
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Double-Hung
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Sliding Glass
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Fast Delivery
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Glass Showers
Building Envelope Experts
Fenton, MO-
Timely Service
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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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Bay Windows
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Double-Hung
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Sliding Glass
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Fast Delivery
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Energy-Efficient Options
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Residential Windows
St. Louis Blinds and Shutters
Ballwin, MO-
Educational Website
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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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Custom Window Designs
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Commercial Windows
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Fast Delivery
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Residential Windows
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Glass Showers
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Bay Windows
Mr. Handyman of St. Charles Co. and Chesterfield Valley
St Peters, MO-
Good Customer Service
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Timely Service
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Educational Website
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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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Commercial Windows
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Double-Hung
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Custom Window Designs
Glass Doctor of Greater St. Louis
St. Louis, MO-
Price Transparency
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Good Customer Service
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Educational Website
Services Offered
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Glass Showers
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Double-Hung
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Commercial Windows
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Fast Delivery
-
Residential Windows
-
Tempered Glass
-
Custom Window Designs
How Installing Energy-Efficient Windows in Ofallon Saves You Money
There are quite a few perks of switching to energy-efficient windows. Some reasons you may want to consider making the switch include the following:
- Save on power bills: According to the Department of Energy, heat gained or lost through windows makes up around 25-30% of household energy use. Replacing your windows with energy-efficient models can help decrease that amount, therefore saving you about 12% more on your bills.
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing your furniture, carpet and other valuables from fading.
- Protect your investment: Upgrading your windows is an important part of maintaining your property and its value, especially if you have an older home.
- Decrease your carbon footprint: In Ofallon, you can cut your indirect greenhouse gas emissions by about 763 pounds per year once you switch to energy-efficient windows.
Estimated Cost of Window Replacement in Ofallon
When looking into window installation, each company provides varying services and costs. Let's look at some average costs and services.
How Much Do New Windows Cost?
According to our market research, the average cost to replace a single window is around $600. However, window installation costs can range from $200 to $1,200 for each window. These amounts vary based on the specifics of your installation, including material, the location of your home, size, number of windows, type and more.
With windows, efficiency is one of the most important factors for most homeowners. High efficiency windows may cost more upfront, but by increasing the efficiency of your home — especially during the summer and winter — they can give you many years of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Ofallon homeowners $382+ per year after replacing single-pane windows.
Something else that influences the overall cost is the material you pick for your frame. Aluminum frames are typically the least pricey and are sturdy and light, but they provide poor insulation. On the other hand, wood frames are the most expensive, as they are aesthetically pleasing and provide decent insulation. Fiberglass and vinyl frames provide good insulation as well and cost somewhere between the other two.
What Services do Window Installers Offer?
The first step when planning a window replacement is to decide whether you want a full-frame or pocket installation.
Full-frame installations require replacing the full window — the sill, frame, trim and all. These are most common when you want a new style for your windows or when it has significant deterioration. Full-frame installations are more time-consuming and will increase overall costs. Pocket installations (also known as retrofits) are when you replace a window while leaving the existing frame. Pocket installations are simpler and won't carry as large a bill, but you can't do this kind of installment if you have any pre-existing rot or water damage.
Your window installer should be able to help you choose which type of installation you need.
Best Affordability
Window World
- Large serice area
- Lifetime warranty
- EnergyStar Partner
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Award-winning company
- Great industry reputation
- More expensive than competition
Best for Residential Windows
Window Nation
- Wide variety of products and services
- Manufactures products in-house
- Award-winning company
- Installation not covered by warranty
How We Choose the Best Window Installers in Ofallon
EcoWatch differs from other reviewers because we examine these companies through a sustainability lens. Along with energy efficiency, we evaluated window companies all across the state and ranked them using the following methodology:
Service Area
Because this is a guide for Ofallon, we gave more points to companies that provide services to the city. There are certainly other reputable providers that didn't make the list because they wouldn't be able to serve homeowners in Ofallon.
Work Quality
When installing new windows, the quality and breadth of services can often play just as important of a role in overall efficiency and performance as the brand of window you get. We do give window installers higher marks if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed trends in recent customer feedback to determine the companies with the highest rates of customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across most other categories, including quality of installation, warranty, quality of parts, cost, professionalism and more.
Cost
This one is a give-and-take: similar to most services, cheap window installers are not going to provide the most quality service. On the other hand, we want to ensure we're highlighting companies that offer a range of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important to many homeowners. That's why window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a good track record in the industry. Window installation companies that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
Ofallon, MO Window Replacement FAQs
How much should a window install cost?
The national average cost to install a window is about $600 but can range between $200 and $1,200, depending on a variety of factors. The price is typically influenced by the location of your property, the type and material of the window and the size of the window. Also, keep in mind 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 types of windows for homes include: bay windows, double-hung and single-hung windows, picture windows, awning windows, slider windows, casement windows and transom windows.
Can you install your own windows?
While it is possible to install your own windows, doing so is time-consuming and requires a lot of handiness. Hiring a professional can help ensure that the job is done properly and that you won't have to spend the time and effort to do it yourself.
When is it time to replace your windows?
Windows usually have a lifespan of 20 to 30 years, but anytime you notice damage on your windows, it's a good idea to have an expert take a look at them to determine if they are in need of a repair or replacement.
Should I replace all my windows at once?
If you want to get more efficient windows and save money on your energy bills, replacing all the windows at once is the only way to gain that benefit. On the other hand, if you have just one or two windows that are damaged or drafty, you can replace just those.