20 Best Window Companies in Lake St. Louis, MO (2025 Reviews)
When the time comes to replace your windows, our list of the top window installation companies can help you find the right provider for you.
We analyzed all the top-rated window companies in Lake St. Louis and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
A review of the top window installation companies in Lake St. Louis may not seem like the most interesting article on the EcoWatch site, but trust us, windows impact your life more than you might think. Traditional or damaged windows could lead to having higher electricity bills during the winter or summer months.
Replacement windows improve your home’s insulation, not only making you more comfortable during extreme temperatures, but also saving you money and helping the environment.
Efficient windows are especially important in Lake St. Louis, where the temperature varies throughout the year. According to Energy Star, switching to energy-efficient windows can save the average homeowner up to $382 a year.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best Window Installation & Replacement Companies in Lake St. Louis
The EcoWatch Reviews team examined dozens of companies that serve the Lake St. Louis area to find the best window installation companies by our standards. The providers in this article scored the best in our review categories, such as energy-efficient offerings, customer service, availability, price, local expertise and more.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
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 around 27 years of experience in the window installation business.
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 provider for you.
Energy Efficiency of Window World WindowsThere are a wide range of window types that Window World offers, some of which are Energy Star products. 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 Lake St. Louis?Pricing information is not available on Window World’s website since the cost of window installment depends on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about the cost.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
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 window installation business.
If you’re looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, this may be the perfect provider for you.
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 Lake St. Louis?Pricing information is not available on Andersen’s website since the cost of window installment depends on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can inquire about a free quote on its website for more information about the cost.

Window Nation
Award-winning company
Manufactures products in-house
Custom designs
Wide variety of products and services
Installation not covered by warranty
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 around 16 years of experience in the window installation business.
If you’re looking for a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms, this may be the perfect provider for you.
Energy Efficiency of Window Nation WindowsThere are a wide range 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 Lake St. Louis?Pricing information is not available on Window Nation’s website since the cost of window installment depends on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. You can inquire about a free quote on its website for more information about the cost.
We aim to remain unbiased and transparent by describing pros and cons for every installer. Additionally, any partnerships do not affect our rankings.
More Window Companies in Lake St. Louis
Renewal by Andersen
Maryland Heights, MOGood Customer Service
Educational Website
Timely Service
Price Transparency
Free assessment
Services Offered
Glass Doors
Bay Windows
Double-Hung
Window Replacement/Installation
Skylights
Champion Replacement Windows of St. Louis
Fenton, MOGood Customer Service
Price Transparency
Free assessment
Services Offered
Glass Doors
Double-Hung
Window Replacement/Installation
Bay Windows
Window Nation
Overland, MOPrice Transparency
Free assessment
Good Customer Service
Educational Website
Services Offered
Custom Window Designs
Bay Windows
Glass Doors
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Home Comfort Exteriors
St Peters, MOFree assessment
Price Transparency
Good Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Windows Doors & More LLC
St Charles, MOFree assessment
Good Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Gateway Door and Contracting
St Charles, MOGood Customer Service
Price Transparency
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Chaney Windows And Doors
Maryland Heights, MOPrice Transparency
Good Customer Service
Free assessment
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Glass Doors
Wood Frames
Vinyl Frames
Building Envelope Experts
Fenton, MOFree assessment
Price Transparency
Timely Service
Educational Website
Good Customer Service
Services Offered
Bay Windows
Energy-Efficient Options
Double-Hung
Custom Window Designs
Window Replacement/Installation
Vinyl Frames
Glass Doors
Colonial Construction
St. Louis, MOGood Customer Service
Educational Website
Services Offered
Window Replacement/Installation
Gateway General Contractors
O'Fallon, MOGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
STL Windows and Doors
Earth City, MOEducational Website
Free assessment
Price Transparency
Good Customer Service
Timely Service
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Glass Doors
Cardinal Contractors
St. Louis, MOGood Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Butler Home Improvement
Collinsville, ILEducational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Quality Installation
Swansea, ILFree assessment
Good Customer Service
Services Offered
Glass Doors
Window Replacement/Installation
Jones Home Improvements
Cottleville, MOGood Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Glass Doctor of St. Charles, MO
St Charles, MOPrice Transparency
Good Customer Service
Educational Website
Services Offered
Glass Doors
Window Repair
Tempered Glass
Energy-Efficient Options
Custom Glass
Window Replacement/Installation
Mirrors
Glass Repair
Glass Showers
Jacob Sunrooms, Exteriors & Baths
Fenton, MOGood Customer Service
Price Transparency
Educational Website
Free assessment
Services Offered
Vinyl Frames
Energy-Efficient Options
Window Replacement/Installation
Glass Showers
Fiberglass Frames
Mills Window & Door Showroom
Fenton, MOGood Customer Service
Price Transparency
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
Lyons Glass Company
Alton, ILFree assessment
Price Transparency
Good Customer Service
Services Offered
Glass Repair
Tempered Glass
Mirrors
Glass Doors
Window Replacement/Installation
Glass Showers
L&D Wilson's Siding & Roofing Inc
Lebanon, ILPrice Transparency
Timely Service
Good Customer Service
Free assessment
Services Offered
Double-Hung
Window Repair
Window Replacement/Installation
Energy-Efficient Options
Calculate how much you can expect to pay for window installation and replacement in Lake St. Louis, 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 Lake St. Louis Saves You Money
Upgrading to energy-efficient windows can help improve the comfort of your home and help you save on electricity bills. Here's more information on how switching out your windows could benefit you:
- Save on power bills: Since energy-efficient windows decrease the amount of energy used to heat or cool your home, they can help you save around $382 annually on your energy bills in Lake St. Louis.
- Protect your investment: Upgrading and repairing your windows is an important part of maintaining your property and its real estate value, especially if you have an older home.
- Protect your valuables: Many Energy Star certified windows have low-emissivity coatings, which not only insulate your home better, but also filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Reduce your carbon footprint: You can reduce your carbon footprint by about 12% when you install Energy Star certified windows. In Lake St. Louis, that’s about 763 pounds per year on average.
Estimated Cost of Window Replacement in Lake St. Louis
Windows come in different styles, shapes and purposes, so costs and services will vary tremendously based on several factors. Below, we detail the typical cost and services that you’ll find from window installers.
How Much Do New Windows Cost?
The national average cost to replace one window is about $600 but can range from $200 to $1,200. But costs will vary significantly depending on your location, the number of windows you need, the quality of your products and the current condition of your home. Many window companies also offer replacement door installations and other add-ons like shutters, baths, coating and more. These extra services will increase overall project costs.
With windows, efficiency is one of the most important factors for many homeowners. Efficient windows may cost more initially, 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 Lake St. Louis homeowners $382+ each year after replacing single-pane windows.
We recommend requesting free quotes from multiple window installation companies to find the right windows and the company that works best for your budget.
What Services do Window Installers Offer?
The first question to ask yourself when planning on installing new windows is: Do you need a full-frame installation or a pocket installation?
Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are typically done when you want a new style for your windows or when it has significant deterioration. Full-frame installations are more comprehensive and will increase overall costs. A pocket installation involves replacing a window within the existing frame, which is usually less expensive than a full-frame installation.
If you’re unsure which kind of window installation service you need, your installer should be able to help you out. In general, the choice depends on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Best Energy-Efficient Features
Champion
- Many years of experience
- Low prices relative to competitors
- Limetime warranty
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
How We Choose the Best Window Installers in Lake St. Louis
In our search to find the most reliable, eco-friendly window installers in Lake St. Louis, the EcoWatch team assessed dozens of companies before deciding on these. Along with energy efficiency, we evaluated each installer and ranked them based on the following methodology:
Service Area
This one is pretty self-explanatory, but we’ve chosen to highlight window installation companies that serve Lake St. Louis so you can find the right window installation company near you.
Work Quality
We’re certain that you’re looking for professionals who do a great job installing windows. We’ve vetted each installer in our guide to make sure its contractors are well-qualified and that the company has gotten lots of positive customer feedback to vouch for its service.
Customer Reviews
Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don’t have good feedback about their experience with a certain window installation company, you won’t see it featured on EcoWatch.
Cost
Cheaper windows certainly don’t mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing providers’ prices, we gave higher points to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
Protecting your investment in new windows is important to many homeowners. 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 installers that have more years of experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Lake St. Louis, MO Window Replacement FAQs
What is the average cost to install new windows?
The typical cost of replacing a single window ranges from $450 to $650. There are many factors that influence how much it costs, including local labor costs, your property’s location, the materials used in designing the windows, styles and sizes of windows, the number of windows and how energy-efficient the windows are.
What are the most common kinds of replacement windows?
The most common types of windows for homes include: transom windows, bay windows, picture windows, awning windows, casement windows, double-hung and single-hung windows and slider windows.
Do I really have to use a window installation company?
You should hire a window installation company whenever you need new windows. Installing windows is a complicated process that can be difficult to do on your own, so it’s best left to the professionals.
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. In addition, it shouldn’t be raining, since rain can make the installation more difficult.
How long does window installation generally take?
Each window takes about 30 minutes to install based on the type of window. However, the window installation can take two days or more if you need to have a lot of windows installed.