20 Best Window Companies in Clayton, MO (2023 Reviews)
Looking to improve your home's insulation? The best window replacement companies can help.
We analyzed all the top-rated window companies in Clayton 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
Whether you're doing renovations or have old windows, windows play a important role in conserving your home's energy. During the summer months, the last thing you want is your cool air to leak out of your outdated, drafty windows.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 of particular importance in Clayton, where the temperature varies throughout the year. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $376 each year.
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 Clayton
The EcoWatch Reviews team evaluated dozens of window installation companies in Clayton to find the top ones for our readers. The providers in this article scored best in our categories: energy-efficient offerings, availability, customer service, price 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. Window World has been in the window industry for about 27 years. The company has hundreds of positive reviews from customers online.
It 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 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 Clayton?Window World does not list prices on its website, but it's known for offering some of the most affordable window installations around. If you’d like more accurate pricing information, you can get a quote on the company’s website.

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. Andersen has been in the window industry for about 27 years. The company has hundreds of positive reviews from customers online.
It 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 windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Renewal by Andersen cost in Clayton?Andersen does not list prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you’d like more accurate pricing information, you can get a quote on the company’s website.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct provides the best warranty in Clayton. Universal has about 20 years of experience in the window installation business. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
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 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 Clayton?Even though pricing 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 pricing information.

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. Window Nation has been in the window industry for about 16 years. The company has hundreds of positive reviews from customers online.
It gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsEach 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. Not all of Window Nation’s windows are Energy Star certified, so be sure to mention that you want Energy Star windows when inquiring.
How much does Window Nation cost in Clayton?Window Nation does not list prices on its website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. If you’d like more accurate pricing information, you can get a quote on the company’s website.
We try to remain unbiased and transparent by listing pros and cons for every company we review. Additionally, our rankings are not affected by any partnerships.
More Window Companies in Clayton
Renewal by Andersen
Maryland Heights, MO-
Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
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Timely Service
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
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Sliding Glass
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Window Replacement
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Glass Showers
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Stained Glass
Champion Replacement Windows of St. Louis
Fenton, MO-
Good Customer Service
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Free assessment
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Price Transparency
Services Offered
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Window Replacement
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Custom Window Designs
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Bay Windows
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Sliding Glass
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Double-Hung
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Residential Windows
Window World of St. Louis
Earth City, MO-
Educational Website
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Timely Service
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Free assessment
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Price Transparency
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Good Customer Service
Services Offered
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Sliding Glass
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Custom Window Designs
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Fast Delivery
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Energy-Efficient Options
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Double-Hung
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Residential Windows
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Glass Showers
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Bay Windows
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Commercial Windows
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Window Replacement
Window Nation
Overland, MO-
Price Transparency
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Good Customer Service
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Educational Website
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Free assessment
Services Offered
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Residential Windows
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Sliding Glass
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Glass Showers
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Stained Glass
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Double-Hung
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Energy-Efficient Options
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Custom Window Designs
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Window Replacement
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Bay Windows
STL Windows and Doors
St. Louis, MO-
Good Customer Service
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Timely Service
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Price Transparency
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Educational Website
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Free assessment
Services Offered
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Fast Delivery
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Double-Hung
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Custom Window Designs
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Residential Windows
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Aluminum Window Frames
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Commercial Windows
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Bay Windows
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Window Replacement
Hyperion Glass Company
St. Louis, MO-
Educational Website
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Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Residential Windows
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Window Replacement
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Double-Hung
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Custom Window Designs
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Glass Showers
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Fast Delivery
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Commercial Windows
Gallagher Bros Construction
St. Louis, MO-
Educational Website
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Good Customer Service
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Price Transparency
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Free assessment
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Timely Service
Services Offered
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Commercial Windows
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Custom Window Designs
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Fast Delivery
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Window Replacement
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Residential Windows
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Full-Service Installations
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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Sliding Glass
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Energy-Efficient Options
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Custom Window Designs
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Window Replacement
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Bay Windows
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Fast Delivery
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Residential Windows
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Double-Hung
Banner Construction
St. Louis, MO-
Timely Service
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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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Full-Service Installations
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Residential Windows
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Custom Window Designs
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Window Replacement
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Double-Hung
Coldstream Exteriors
St. Louis, 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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Aluminum Window Frames
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Residential Windows
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Custom Window Designs
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Window Replacement
Cardinal Contractors
St. Louis, MO-
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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Double-Hung
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Commercial Windows
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Custom Window Designs
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Residential Windows
Integrity Restoration - Home Remodeling
Brentwood, MO-
Free assessment
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Educational Website
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Good Customer Service
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Timely Service
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Price Transparency
Services Offered
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Stained Glass
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Fast Delivery
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Commercial Windows
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Window Replacement
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Custom Window Designs
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Residential Windows
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Glass Showers
LEI Home Enhancements
St. Louis, MO-
Price Transparency
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Educational Website
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Free assessment
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Good Customer Service
Services Offered
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Custom Window Designs
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Window Replacement
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Residential Windows
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Sliding Glass
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Commercial Windows
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Fast Delivery
Home Services at The Home Depot
St. Louis, 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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Fast Delivery
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Stained Glass
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Commercial Windows
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Custom Window Designs
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Glass Showers
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Double-Hung
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Residential Windows
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Window Replacement
Colonial Construction
St. Louis, MO-
Educational Website
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Good Customer Service
Services Offered
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Custom Window Designs
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Window Replacement
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Fast Delivery
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Residential Windows
Mills Window & Door Showroom
Fenton, MO-
Free assessment
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Good Customer Service
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Price Transparency
Services Offered
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Window Replacement
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Residential Windows
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Commercial Windows
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Custom Window Designs
Jacob Sunrooms, Exteriors & Baths
Fenton, MO-
Price Transparency
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Free assessment
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Good Customer Service
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Educational Website
Services Offered
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Energy-Efficient Options
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Custom Window Designs
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Fast Delivery
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Glass Showers
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Window Replacement
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Residential Windows
XL Building Products
St. Louis, MO-
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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Double-Hung
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Custom Window Designs
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Window Replacement
Granite City Glass
Granite City, IL-
Free assessment
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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Glass Showers
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Custom Window Designs
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Commercial Windows
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Full-Service Installations
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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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Price Transparency
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Educational Website
Services Offered
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Residential Windows
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Tempered Glass
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Window Replacement
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Commercial Windows
Calculate how much you can expect to pay for window installation and replacement in Clayton, MO 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 Clayton Saves You Money
There are several perks of upgrading to energy-efficient windows. A few reasons you may want to consider making the switch include the following:
- Save money on energy bills: Once you install energy-efficient windows, you can see a reduction in your bills by about 12% because you'll use less energy to heat or cool your home.
- Protect your investment: The older your home is, the more likely it is that switching to energy-efficient windows will benefit you. Older homes tend to have windows that are outdated, leaky or potentially even damaged in some way. Updating your windows could help raise the value of your home if you decide to sell.
- Protect your valuables from fading: When you switch to energy-efficient windows that have low-emissivity coatings, your floors, carpets and furniture will fade less due to their ability to filter out harmful UV rays.
- More efficient energy usage in your household: Because the winters can get very cold in Clayton, homeowners usually rely on their heater during that time. Energy-efficient windows cut back on how much heat is lost through your windows, making it easier to keep your home warm.
Estimated Cost of Window Replacement in Clayton
When looking into window installation, each company offers different services and prices. Let's look at some typical costs and services.
How Much Do New Windows Cost?
Although the average of replacing one window is around $600, it can range from $200 to $1,200. These estimates are based on specific characteristics of your installation, such as the location of your home, number of windows, type, material, size and more.
It's important to bear in mind that windows with the best efficiency may cost more upfront but can save you hundreds of dollars via returns on your energy bills. Investing in certified energy-efficient windows can save Clayton homeowners $376+ a year when replacing single-pane windows.
Another factor that influences the overall cost is the material you choose for your frame. Aluminum frames are typically the least expensive and are sturdy and light, but they offer poor insulation. On the other hand, wood frames cost the most, as they are aesthetically pleasing and offer decent insulation. Fiberglass and vinyl frames provide good insulation and cost somewhere between the other two.
What Services do Window Installers Offer?
The first step of a window replacement is to think about whether you want a full-frame or pocket installation.
A full-frame installation is a replacement of the total window. It involves removing the old window, the sill, and the exterior and interior trim. It can also involve extra materials, including insulation and drip edges, which raise the overall cost of the project. It's also worth noting that you may have to touch up the paint around the window after a full-frame installation. A pocket installation entails replacing a window within the frame that's already there. So, instead of taking out the whole unit and reinstalling it, the window installer will just slide the replacement window (also called a retrofit or insert window) into the frame.
Your window replacement company should be able to help you understand what's best for your needs. In Clayton, the decision will mostly depend on the age of your home and if there's any moisture damage. Wood can decay if it's not properly maintained over the years, so it's good to have a professional evaluate 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 Clayton
EcoWatch is different from most reviewers because we're examining these companies through a sustainability lens. We have evaluated the top window replacement companies in Clayton mostly based on their energy efficient offerings, as it's what's best for the environment and for you as a homeowner. Energy Star certified windows can cut your power bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
This one is self-explanatory, but we've chosen to highlight window installation companies that serve a wide variety of states and cities so you can find the best 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 installer featured in our guide to make sure its technicians are well-qualified and that the company has gotten a lot of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet super important review factor is customer feedback. If most customers don't have nice things to say about their service from a certain window installation company, you won't see it featured on EcoWatch.
Cost
This one is a give-and-take: as with other services, cheap window installation companies are not going to provide the highest quality service. On the other hand, we want to ensure we're highlighting companies that offer a spectrum 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 with lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a proven track record in the industry. Window installers that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Clayton, MO Window Replacement FAQs
How much does window installation cost?
The national average cost of installing a single window is around $600 but can range between $200 and $1,200, depending on a variety of factors. The price is generally influenced by the location of your property, the size of the window and the type and material of the window. Also, remember that energy-efficient windows may cost more initially but can save you hundreds of dollars a year in energy bills.
What type of window is the most energy-efficient?
A window's energy efficiency depends on several factors, such as the quality of the installation and the kind of window. Look for Energy Star Certified windows — these are typically the most energy-efficient since they are certified by the U.S. Department of Energy.
Can I replace my own windows?
Even though it is possible to install your own windows, doing so requires a lot of time and experience with home improvement projects. Using a window replacement company can help ensure that the job is done properly and that you can avoid spending the time and effort of doing it yourself.
How long does window installation typically take?
Each window takes about 30 minutes to install depending on the kind of window. However, the window installation can take two days or more if you need to have a lot of windows installed.