24 Best Window Replacement Companies in Union, MO (2023 Reviews)
Window Companies Near Me
If you're looking to upgrade to new windows, our list of the best window installation companies can help.
We analyzed all the top window installers in Union 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
Whether you're updating for aesthetics or have old windows, windows play a crucial role in conserving energy in your home. The Department of Energy estimates that heat or cool air lost through outdated or drafty windows could be responsible for nearly 30% of residential energy climate costs. In Union, where the power bills are an average of $41 per month, that's almost $$148 per year wasted.
Installing new, efficient windows on your property can help you save money each month on your electric bills — and you can help the environment, too.
So if you're constructing a new home, renovating or replacing your windows in Union, you've found the best place to get started.
Best Affordability
Window World
- EnergyStar Partner
- Low prices relative to competitors
- Great industry reputation
- 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
- Custom designs
- Award-winning company
- Manufactures products in-house
- Installation not covered by warranty
Best Window Replacement Companies in Union
The EcoWatch Reviews team evaluated many installers in Union to find the top ones for our readers. The installers in this article scored best in our categories: energy-efficient offerings, customer service, availability, price and more.

Window World
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EnergyStar Partner
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Low prices relative to competitors
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Great industry reputation
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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 been operating since 1995 and currently serves 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 perfect company for you.
Energy Efficiency of Window World WindowsWindow World's commitment to sustainability can be seen in its energy-efficient window offerings. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Union?Window World doesn't have any pricing information displayed on its website, but it's known for offering some of the most affordable window installations around. You can request a free quote on its website for more information about pricing.

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 about 27 years of experience in the window installation sector. Its reputation is backed by a considerable amount of positive reviews on customer review websites.
Andersen may be the company for you if you're looking for one 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 WindowsThere are a wide range of window types that Renewal by Andersen offers, some of which are Energy Star products. 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 Union?Andersen does not detail prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more accurate information on the cost, you can inquire about a quote from the company.

Window Nation
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Custom designs
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Award-winning company
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Manufactures products in-house
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Installation not covered by warranty
Window Nation provides the best residential windows in Union. Window Nation has about 16 years of experience in the window replacement industry. Many positive reviews on customer review websites back the company's reputation.
It has established itself as a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsThere are a wide variety of window types that Window Nation offers, some of which are Energy Star products. 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 Union?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. For more accurate information on pricing, you can get a quote from the company.

Universal Windows Direct
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Makes charitable contributions
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Manufactures products in-house
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Wide variety of products and services
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Lifetime warranty
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Limited service area
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Some installations carried out by third-party contractors
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Quality of service will depend on your area
Universal Windows Direct provides the best warranty in Union. It's a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has about 20 years of experience in the windows industry, and it currently serves 27 states nationwide. Its reputation is backed by all the positive reviews from customers online.
Universal may be the company for you if you're interested in one that has an industry-leading warranty covering products, parts and workmanship for life.
Energy Efficiency of Universal Windows Direct WindowsThe company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products. Not all of Universal's windows are Energy Star certified, so be sure to mention that you'd like Energy Star windows when inquiring.
How much does Universal Windows Direct cost in Union?Universal does not mention prices on its website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. The best way to know for sure is to request a free quote from the company.
Please note that the companies in this section are national, which means the quality of customer service may vary depending on your local team. We have tried to remain unbiased and transparent by listing pros and cons for each company.
More Window Replacement Companies in Union
The Glass Guru
Wentzville, MO-
Educational Website
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Price Transparency
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Free assessment
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Award-Winning
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Good Customer Service
Services Offered
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Double-Hung
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Stained Glass
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Custom Window Designs
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Aluminum Window Frames
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Commercial Windows
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Sliding Glass
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Residential Windows
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Glass Showers
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Full-Service Installations
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Tempered Glass
The Blind Broker of St. Louis
St Peters, MO-
Free assessment
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Award-Winning
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Custom Window Designs
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Energy-Efficient Options
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Bay Windows
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Aluminum Window Frames
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Stained Glass
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Full-Service Installations
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Glass Showers
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Residential Windows
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Commercial Windows
Window World of St. Louis
Earth City, 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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Energy-Efficient Options
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Sliding Glass
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Double-Hung
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Glass Showers
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Fast Delivery
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Bay Windows
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Commercial Windows
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Custom Window Designs
Two Blind Guys
Chesterfield, 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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Stained Glass
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Sliding Glass
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Residential Windows
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Bay Windows
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Aluminum Window Frames
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Glass Showers
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Energy-Efficient Options
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Commercial Windows
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Custom Window Designs
Two Blind Guys
Des Peres, 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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Custom Window Designs
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Bay Windows
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Stained Glass
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Glass Showers
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Commercial Windows
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Residential Windows
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Sliding Glass
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Aluminum Window Frames
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Energy-Efficient Options
Chaney Windows And Doors
Maryland Heights, MO-
Award-Winning
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Free assessment
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Educational Website
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Good Customer Service
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Price Transparency
Services Offered
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Bay Windows
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Energy-Efficient Options
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Custom Window Designs
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Commercial Windows
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Stained Glass
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Sliding Glass
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Double-Hung
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Residential Windows
Freedom Restoration and Roofing
Warrenton, 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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Timely Service
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Price Transparency
Services Offered
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Full-Service Installations
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Commercial Windows
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Residential Windows
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Glass Showers
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Custom Window Designs
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Fast Delivery
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Double-Hung
Budget Blinds of Clayton & University City, West & South St. Louis
Manchester, 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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Residential Windows
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Glass Showers
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Custom Window Designs
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Fast Delivery
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Commercial Windows
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Aluminum Window Frames
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Double-Hung
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Energy-Efficient Options
Gallagher Bros Construction
St. Louis, MO-
Educational Website
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Price Transparency
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Free assessment
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Timely Service
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Good Customer Service
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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Double-Hung
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Fast Delivery
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Commercial Windows
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Custom Window Designs
Maris Home Improvements
Chesterfield, MO-
Award-Winning
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Free assessment
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Timely Service
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Educational Website
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Price Transparency
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Good Customer Service
Services Offered
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Residential Windows
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Custom Window Designs
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Glass Showers
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Commercial Windows
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Double-Hung
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Fast Delivery
Lakeside Renovation & Design
Chesterfield, MO-
Award-Winning
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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
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Educational Website
Services Offered
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Custom Window Designs
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Fast Delivery
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Glass Showers
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Full-Service Installations
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Residential Windows
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Commercial Windows
Sears Window Replacement
Bridgeton, MO-
Good Customer Service
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Educational Website
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Free assessment
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Award-Winning
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Price Transparency
Services Offered
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Double-Hung
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Stained Glass
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Residential Windows
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Energy-Efficient Options
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Bay Windows
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Glass Showers
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Sliding Glass
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Custom Window Designs
Mr. Handyman of Central St. Louis County
Maryland Heights, MO-
Good Customer Service
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Price Transparency
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Timely Service
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Free assessment
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Educational Website
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Award-Winning
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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Glass Showers
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Stained Glass
STL Windows and Doors
St. Louis, MO-
Educational Website
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Free assessment
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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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Sliding Glass
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Residential Windows
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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
All About Blinds Etc., Inc.
O'Fallon, MO-
Good Customer 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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Residential Windows
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Energy-Efficient Options
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Bay Windows
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Custom Window Designs
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Sliding Glass
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Glass Showers
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Commercial Windows
Kirkwood Glass Co
Kirkwood, MO-
Price Transparency
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Educational Website
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Good Customer Service
Services Offered
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Fast Delivery
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Sliding Glass
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Custom Window Designs
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Full-Service Installations
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Double-Hung
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Tempered Glass
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Glass Showers
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Residential Windows
STL Design and Build
Maryland Heights, MO-
Educational Website
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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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Award-Winning
Services Offered
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Residential Windows
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Double-Hung
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Glass Showers
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Fast Delivery
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Custom Window Designs
Crystal Windows & Door Systems
Fenton, MO-
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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Commercial Windows
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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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Glass Showers
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Energy-Efficient Options
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Aluminum Window Frames
Spectrum Glass & Tinting
O'Fallon, MO-
Price Transparency
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Free assessment
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Good Customer Service
Services Offered
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Commercial Windows
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Sliding Glass
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Full-Service Installations
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Custom Window Designs
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Double-Hung
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Residential Windows
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Fast Delivery
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Glass Showers
Building Envelope Experts
Fenton, MO-
Free assessment
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Educational Website
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Timely Service
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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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Energy-Efficient Options
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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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Bay Windows
St. Louis Blinds and Shutters
Ballwin, 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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Commercial Windows
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Fast Delivery
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Glass Showers
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Residential Windows
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Custom Window Designs
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Bay Windows
Lindsay Windows Missouri
Union, MO-
Award-Winning
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Good Customer 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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Residential Windows
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Commercial Windows
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Energy-Efficient Options
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Stained Glass
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Custom Window Designs
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Sliding Glass
Mr. Handyman of St. Charles Co. and Chesterfield Valley
St Peters, MO-
Good Customer Service
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Educational Website
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Free assessment
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Price Transparency
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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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Residential Windows
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Glass Showers
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Double-Hung
Martin Glass Company
St. Louis, MO-
Award-Winning
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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
Services Offered
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Glass Showers
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Custom Window Designs
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Sliding Glass
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Full-Service Installations
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Residential Windows
How Installing Energy-Efficient Windows in Union Saves You Money
Energy-efficient windows can offer benefits in more than one way. Here are a few reasons you may want to consider making the switch:
- Protect your investment: Keeping your windows up to date is an important part of maintaining your property and its value, especially if you have an older home.
- Decrease your carbon footprint: In Union, you can lower your indirect greenhouse gas emissions by about 763 pounds per year once you upgrade to energy-efficient windows.
- Save money on electricity bills: Switching to energy-efficient windows lowers your energy bills by about 12% since you need less energy.
- Protect your valuables: The low-emissivity coatings on many energy-efficient windows help reduce damage from the sun's UV rays to your floors, carpets and furniture.
Estimated Cost of Window Replacement in Union
Windows come in all shapes and sizes, so costs and services will vary greatly. Here are the typical costs and services that you'll find from window installation companies.
How Much Do New Windows Cost?
Although the average to replace a single window is about $600, it can range from $200 to $1,200. How much it will cost you is based on several factors, like size, type, number of windows, the location of your home, material and more.
It's also worth noting that energy-efficient windows will usually cost more initially, but Energy Star predicts that upgrading the windows on your Union home translates to an average energy savings of $236 to $319 per year for single-pane window replacement, or between $87 to $126 per year for double-pane windows. The amount of money you'll save by upgrading to energy-efficient windows depends on your local climate, energy rates and other factors unique to your home.
Costs will also vary based on the material you want for your window frames. Aluminum frames have the lowest price. They're sturdy, light and easy to maintain, but offer poor insulation. Vinyl frames are somewhat expensive and offer good insulation. Composite frames made from wood fibers encased in plastic also offer good insulation and are moderately expensive. Wood frames are the most expensive and are the most in-demand. They're also aesthetically pleasing and offer decent insulation for your home.
What Services do Window Installers Offer?
Generally, there are two kinds of window replacement services you can get: full-frame and pocket installations.
A full-frame installation replaces the full window, such as the sill, 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 cost as much, as they involve merely replacing the window within its existing frame. But if the frame has any damage or rot, you may need a full-frame installation instead.
Your window installation company should be able to help you decide what's best for your needs. In Union, the decision will mostly depend on the age of your home and if there's any damage. Wood can decay if it's not maintained properly over the years, so it's good to have a professional examine your frames and window sills.
Best Affordability
Window World
- EnergyStar Partner
- Low prices relative to competitors
- Great industry reputation
- 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
- Custom designs
- Award-winning company
- Manufactures products in-house
- Installation not covered by warranty
How We Choose the Best Window Installers in Union
EcoWatch reviews are different from other reviews since we're examining these companies through a sustainability lens. We've reviewed the top window installation companies in Union primarily based on their energy efficient offerings, as it's the most sustainable option and the best one for homeowners. Energy Star certified windows have been shown to lower power bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Since this is a guide for Union, we only included companies that cover the city. There are certainly other reputable providers that didn't make the cut because they wouldn't be able to serve homeowners in Union.
Work Quality
When it comes to new windows, the quality and variety of services often plays just as important of a role in overall efficiency and performance as the brand you choose. 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
Another self-explanatory yet super important review factor is customer feedback. If most customers don't have positive feedback about their service from a certain window installation company, it won't be featured on EcoWatch.
Cost
This one is a give-and-take: similar to other services, cheap window installation companies won't always provide the highest quality service. Still, we want to make sure we're highlighting companies that offer a wide range of price and financing options so they're accessible to most homeowners.
Warranty
Protecting your investment in new windows is important. For that reason, 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 been in the industry for quite some time. Window installation companies that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.
Union, MO Window Replacement FAQs
What is the typical cost to replace windows in a home?
The typical cost to replace one window ranges between $450 and $650. There are a variety of factors that influence how much it costs, which include styles and sizes of windows, local labor costs, your property's location, the materials used in designing the windows, the number of windows and how energy-efficient the windows are.
What are the most common types of replacement windows?
There are several different kinds of windows you can get for your home, including casement windows, slider windows, transom windows, bay windows, double-hung and single-hung windows, awning windows and picture windows.
Do I really have to use a window installation company?
Unless you have home repair skills and have the time needed to replace your own windows, we recommend hiring a professional. The process of installing windows is complicated and can take anywhere from four to six hours for a single window. Although it's tempting to try to do it yourself to save money, hiring a company is a faster, more efficient and much safer alternative.
When is the best time of year to replace windows?
While you can install windows any time of year, warmer weather is often better for installing replacement windows. Additionally, it shouldn't be raining, as rain can make the installation more difficult.
When is it time to replace your windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, then they should probably be replaced. Apart from that, if your windows have damage anywhere on them, or they have become difficult to operate, they may be in need of replacement.