20 Best Window Companies in St. Charles, IL (2025 Reviews)
If you’re thinking about upgrading to new windows, our guide to the best window installation companies can help.
We analyzed all the top-rated window companies in St. Charles 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
Whether you're updating for style 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 old or damaged windows could be responsible for close to 30% of heating and cooling usage. In St. Charles, where the electricity bills are an average of $34 per month, that’s almost $$123 per year wasted.
Replacement windows improve your home’s insulation, not only making you more comfortable during extreme temperatures, but also saving you some money and helping the environment.
So if you’re constructing a new home, renovating or changing out old windows in St. Charles, this guide is the best place to get started.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in St. Charles
The EcoWatch Reviews team researched dozens of installers across the country to find the top window installation companies for our readers. We assessed the providers on energy-efficient offerings, coverage area, customer service, local experience, price 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 provides windows expertise in St. Charles. It's the largest window replacement company in the country, known for its vinyl windows and affordability. This company has been in business since 1995 and currently services 200 locations nationwide.
It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsWindow World’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 St. Charles?Window World doesn’t have any prices available on its website, but it's known for offering some of the most affordable window installations around. The best way to know for sure is to request a free quote from the company.

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 provides the best availability in St. Charles. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This company has been in business since 1995 and currently services nearly every state except Mississippi and West Virginia.
It has established itself as a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen’s commitment to sustainability can be seen in its energy-efficient window offerings. 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 St. Charles?Andersen doesn’t have any prices 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 request a free quote from the company.

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 provides the best residential windows in St. Charles. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This company has been in business since 2006 and currently services residents within 75 miles of its showrooms, which are in 13 states.
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 WindowsWindow Nation’s commitment to sustainability can be seen in its energy-efficient window offerings. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.
How much does Window Nation cost in St. Charles?Window Nation doesn’t have any prices available 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. The best way to know for sure is to request a free quote from the company.
We aim to be unbiased and transparent by mentioning pros and cons for each company we review. Additionally, our rankings are not influenced by any partnerships.
More Window Companies in St. Charles
Renewal by Andersen of Chicago
Lockport, ILPrice Transparency
Educational Website
Free assessment
Good Customer Service
Services Offered
Double-Hung
Custom Window Designs
Glass Doors
Bay Windows
Window Replacement/Installation
Skylights
Power Home Remodeling
Chicago, ILGood Customer Service
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Nation
Romeoville, ILEducational Website
Services Offered
Vinyl Frames
Glass Doors
Custom Window Designs
Bay Windows
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
EXTERIORS Windows & Siding Installers
St. Charles, ILFree assessment
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
ACE Roofing Contractors & Roof Replacement
St. Charles, ILFree assessment
Good Customer Service
Services Offered
Window Replacement/Installation
NextWave Construction Windows, Siding, & Doors
Maple Park, ILGood Customer Service
Price Transparency
Timely Service
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Schmidt Exteriors, Inc.
Aurora, ILGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Custom Window Designs
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Glass Doors
Bay Windows
Great Outlook Glass
Dundee Township, ILFree assessment
Services Offered
Glass Doors
Window Replacement/Installation
Glass Showers
Glass Repair
Mirrors
WarmDreams Windows & Doors
East Dundee, ILFree assessment
Good Customer Service
Educational Website
Price Transparency
Services Offered
Custom Window Designs
Energy-Efficient Options
Double-Hung
Bay Windows
Glass Doors
Window Replacement/Installation
Two Panes Glazing, LLC
Wheaton, ILEducational Website
Good Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Glass Doors
Energy-Efficient Options
Window Repair
Chicago Windows Solutions
Schaumburg, ILPrice Transparency
Timely Service
Free assessment
Services Offered
Bay Windows
Double-Hung
Window Replacement/Installation
Vinyl Frames
Glass Doors
BUZ Windows Replacement & Installation
Carol Stream, ILFree assessment
Services Offered
Glass Doors
Double-Hung
Bay Windows
Energy-Efficient Options
Window Replacement/Installation
Hoffman Window Replacement Company
Hoffman Estates, ILTimely Service
Good Customer Service
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Vinyl Frames
New Edg Window Replacement
Naperville, ILServices Offered
Window Replacement/Installation
Window Repair
BUZ's Windows Replacement & Installation
Algonquin, ILGood Customer Service
Price Transparency
Free assessment
Services Offered
Wood Frames
Energy-Efficient Options
Vinyl Frames
Window Replacement/Installation
Royal Craft Home Remodelers Inc.
Downers Grove, ILGood Customer Service
Educational Website
Free assessment
Services Offered
Window Replacement/Installation
Goverla Windows and Doors
Fox River Grove, ILPrice Transparency
Free assessment
Educational Website
Services Offered
Bay Windows
Vinyl Frames
Energy-Efficient Options
Pocket Windows
Glass Doors
Double-Hung
Wood Frames
Window Replacement/Installation
Rite Way Glass & Mirror
Woodridge, ILFree assessment
Price Transparency
Timely Service
Educational Website
Good Customer Service
Services Offered
Tempered Glass
Glass Doors
Mirrors
Window Replacement/Installation
Glass Showers
Window Repair
Energy-Efficient Options
Screen Repair
Your Window Solutions
Lake in the Hills, ILEducational Website
Price Transparency
Free assessment
Services Offered
Bay Windows
Window Replacement/Installation
Double-Hung
Glass Doors
Screen Medix
Palatine, ILGood Customer Service
Educational Website
Free assessment
Services Offered
Window Repair
Glass Doors
Window Replacement/Installation
Screen Repair
Calculate how much you can expect to pay for window installation and replacement in St. Charles, IL 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 St. Charles Saves You Money
There are several benefits of switching to energy-efficient windows. A few reasons you may want to consider making the change include the following:
- Save on energy bills: According to the Department of Energy, heat gained or lost through windows accounts for around 25-30% of household energy use. Replacing your windows with energy-efficient models can help reduce how much energy is used in your home, therefore saving you about 12% more on your bills.
- Decrease your carbon footprint: In St. Charles, you can cut your indirect greenhouse gas emissions by about 449 pounds per year after you install energy-efficient windows.
- Protect your valuables: The low-emissivity coatings on many energy-efficient windows help prevent the fading of your floors, carpets and furniture by filtering out UV rays.
- Protect your investment: When you have an older home, your windows could also be outdated or damaged. Upgrading your windows is an important part of maintaining your property and its real estate value.
Estimated Cost of Window Replacement in St. Charles
Each window replacement company offers varying services and has different costs depending on several factors.
How Much Do New Windows Cost?
Though the typical cost to install one window is around $600, it can range anywhere from $200 to $1,200. But costs will differ significantly depending on the number of windows you need, the quality of your products, your location and the current condition of your home. Many window companies also offer replacement door installations and other add-ons like coating, shutters, baths and more. Additional services will increase your overall project costs.
Whether or not you want energy-efficient windows is another factor that will influence the cost. These will usually cost more than other windows, but on the other hand, you can save about $297 a year on your energy bills in St. Charles.
We advise getting free quotes from several window installation companies to find the right windows and the company that works best for you.
What Services do Window Installers Offer?
Generally, there are two types of window replacement services you can get: full-frame and pocket installations.
A full-frame installation is a total window replacement. This service involves taking out the old window, the sill, and the exterior and interior trim. It can also involve additional materials, such as insulation and drip edges, which increase the overall cost of the project. Also worth noting: it’s not uncommon for homeowners to have to touch up the paint around the window after a full-frame installation. Pocket installations (or retrofits) involve installing a new window within the existing frame, which makes pocket installations take less time and therefore cost less. But, if the frame has any rot or deterioration, you should opt for a full-frame installation instead.
Your window installation company should be able to help you decide what’s best for your needs. In St. Charles, the decision will mostly depend on the age of your home and if there’s any damage. Wood can decay if not maintained properly over the years, so it’s a good idea to have a professional assess your frames and window sills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in St. Charles
EcoWatch reviews differ from most reviews because we examine these companies through a sustainability lens. We have reviewed the best window installers in St. Charles mostly based on energy efficiency, as the most sustainable option also benefits homeowners in many ways. Energy-efficient windows can reduce your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology takes the following factors into consideration:
Service Area
Since this is a guide for St. Charles, we paid more attention to companies that cover the city. There are certainly other reputable providers that didn’t make the list because they wouldn’t be able to serve homeowners in St. Charles.
Work Quality
When selecting 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 opt for. We do give window installers more points if they offer high-quality products, but we also factor in workmanship as reflected in customer feedback.
Customer Reviews
We analyzed patterns in recent customer feedback to find the companies with the most consistent customer satisfaction. Customer satisfaction might be the most important factor, as it reflects the quality of services across most other categories, including cost, warranty, quality of installation, quality of parts, professionalism and more.
Cost
Cheaper windows don’t necessarily mean better windows, but we know many of our readers try to keep costs as low as possible. When analyzing the prices of providers, we gave higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
As discussed previously, windows are a substantial investment, so you’ll want to be certain that investment is protected. Window installation companies that offer lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Due to St. Charles’s climate, homeowners need to be wary of low efficiency, water damage and rot. We factored in local experience to reflect the ability of St. Charles window companies to prepare homes for these issues. If a company has less than 10 years of experience, it loses points in this category.
St. Charles, IL Window Replacement FAQs
How much does a window install cost?
The average cost of replacing one window can range from $450 to $650. There are a variety of factors that affect the price, which include the materials used in designing the windows, your property’s location, the number of windows, styles and sizes of windows, local labor costs and how energy-efficient the windows are.
Which type of window should I get?
A window’s energy efficiency is affected by several factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are often the most energy-efficient and are certified by the U.S. Department of Energy.
When do I have to use a window installation company?
Unless you’re handy and have all the necessary tools to replace your own windows, we recommend hiring a professional installer. The process of installing windows is complex and can take anywhere from four to six hours for a single window. Although it’s tempting to try to save some money by doing it yourself, hiring a professional is a faster, more efficient and much safer option.
How often do you need to replace windows?
Windows have a typical lifespan of about 20 to 30 years. If your windows are older than that, they should probably be replaced. Other than that, if your windows have any damage on them, or they have become difficult to open or close, they may need to be replaced.