20 Best Window Companies in Rockford, IL (2025 Reviews)
Looking to replace your windows? We’ve got all the information you need in this list of the best window installation companies.
We analyzed all the top-rated window companies in Rockford 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 guide on the top window replacement companies in Rockford may not seem like the most captivating article on the EcoWatch site, but trust us, windows have a more direct impact on your life than you might realize. Traditional, outdated windows can cost you in electric bills. As a matter of fact, the Department of Energy estimates that 25-30% of your home’s heat or cool air could be lost through your windows.
Installing efficient windows on your property can help you save money every month on your energy bills — and you can help the environment as well.
We’ve made a guide on the best installation companies to help you in your research, so you can not only enjoy brand-new windows, but also save money on your power bills.
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 Rockford
The EcoWatch Reviews team evaluated dozens of installers in Rockford to find the best window installation companies for our readers. We assessed the providers based on energy-efficient offerings, customer service, local experience, price, coverage area 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. This provider has 27 years of experience in the window installation business, and it has become one of the best companies in Rockford. Its reputation is backed by a considerable amount of positive reviews from customers online.
Window World may be the company for you if you want one 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. 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 Rockford?Pricing details are not available on Window World’s website because the cost of window replacement varies greatly based 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. For more detailed information on pricing, you can request a 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 is a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. This provider has 27 years of experience in the window installation business, and it has become one of the best companies in Rockford. Its reputation is backed by a considerable amount of positive reviews from customers online.
Andersen may be the company for you if you want 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 WindowsRenewal by Andersen carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. 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 Rockford?Pricing details are not available on Andersen’s website because the cost of window replacement varies greatly based 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. For more detailed information on pricing, you can request a 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 is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This provider has 16 years of experience in the window installation business, and it has become one of the best companies in Rockford. Its reputation is backed by a considerable amount of positive reviews from customers online.
Window Nation may be the company for you if you want one 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 carries some Energy Star windows, but note that not all its windows are energy-efficient, so be sure to ask for Energy Star windows when inquiring. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.
How much does Window Nation cost in Rockford?Pricing details are not available on Window Nation’s website because the cost of window replacement varies greatly based 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. For more detailed information on pricing, you can request a quote from the company.
We’ve recommended providers with good reputations, but bear in mind that some national companies have independently owned locations in Rockford, so your service may differ depending on your local crew. We have tried to be unbiased and transparent by including pros and cons for every company we reviewed.
More Window Companies in Rockford
Renewal by Andersen
Madison, WIEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Glass Doors
Bay Windows
Custom Window Designs
Double-Hung
Skylights
Champion Replacement Windows of Madison
Madison, WITransparent pricing and no hidden fees
Price Transparency
Limited lifetime warranty
Good Customer Service
Free assessment
All products made or sourced in the USA
Services Offered
Window Replacement/Installation
Glass Doors
Double-Hung
Bay Windows
Huskie Exteriors
Rockford, ILGood Customer Service
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
NextWave Construction Windows, Siding, & Doors
Maple Park, ILPrice Transparency
Good Customer Service
Timely Service
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Your Window Solutions
Lake in the Hills, ILFree assessment
Educational Website
Price Transparency
Services Offered
Window Replacement/Installation
Bay Windows
Glass Doors
Double-Hung
BUZ's Windows Replacement & Installation
Algonquin, ILPrice Transparency
Free assessment
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Vinyl Frames
Wood Frames
Great Outlook Glass
Dundee Township, ILFree assessment
Services Offered
Window Replacement/Installation
Glass Doors
Glass Showers
Mirrors
Glass Repair
WarmDreams Windows & Doors
East Dundee, ILEducational Website
Free assessment
Price Transparency
Good Customer Service
Services Offered
Double-Hung
Window Replacement/Installation
Custom Window Designs
Energy-Efficient Options
Glass Doors
Bay Windows
Goverla Windows and Doors
Fox River Grove, ILFree assessment
Educational Website
Price Transparency
Services Offered
Bay Windows
Wood Frames
Vinyl Frames
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Double-Hung
Pocket Windows
ACE Roofing Contractors & Roof Replacement
St. Charles, ILGood Customer Service
Free assessment
Services Offered
Window Replacement/Installation
EXTERIORS Windows & Siding Installers
St. Charles, ILFree assessment
Good Customer Service
Price Transparency
Services Offered
Window Replacement/Installation
Vinyl Frames
Energy-Efficient Options
Exceptional Exteriors LLC
Stoughton, WIGood Customer Service
Free assessment
Educational Website
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Schmidt Exteriors, Inc.
Aurora, ILFree assessment
Educational Website
Good Customer Service
Price Transparency
Services Offered
Vinyl Frames
Glass Doors
Window Replacement/Installation
Bay Windows
Custom Window Designs
Energy-Efficient Options
Hoffman Window Replacement Company
Hoffman Estates, ILGood Customer Service
Price Transparency
Timely Service
Free assessment
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Chicago Windows Solutions
Schaumburg, ILFree assessment
Timely Service
Price Transparency
Services Offered
Double-Hung
Window Replacement/Installation
Glass Doors
Bay Windows
Vinyl Frames
Screen Medix
Palatine, ILEducational Website
Good Customer Service
Free assessment
Services Offered
Screen Repair
Window Repair
Glass Doors
Window Replacement/Installation
BUZ Windows Replacement & Installation
Carol Stream, ILFree assessment
Services Offered
Window Replacement/Installation
Double-Hung
Glass Doors
Energy-Efficient Options
Bay Windows
Two Panes Glazing, LLC
Wheaton, ILFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Energy-Efficient Options
Window Repair
Glass Doors
Window Replacement/Installation
Professional Home Improvement, Inc.
Arlington Heights, ILServices Offered
Energy-Efficient Options
Window Replacement/Installation
Window Door Pro Installation
Buffalo Grove, ILFree assessment
Price Transparency
Timely Service
Good Customer Service
Educational Website
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in Rockford, 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 Rockford Saves You Money
There are quite a few benefits of switching to energy-efficient windows. Some reasons you may want to consider making the change include the following:
- Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your house, you can cut your indirect greenhouse gas emissions by about 12%, according to Energy Star.
- Save money on power bills: According to the Department of Energy, heat gained or lost through windows accounts for about 25-30% of residential energy use. Upgrading to energy-efficient models can help lower that amount, therefore saving you about 12% more on your bills.
- Protect your investment: If you have an older home, your windows are most likely in need of replacement. Updating your windows can make your home more comfortable and also help increase the value of your house if you decide to sell.
- Protect your valuables from fading: When you switch to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading because of their ability to filter out harmful UV rays.
Estimated Cost of Window Replacement in Rockford
Each window replacement company provides various services and has varying prices based on several factors.
How Much Do New Windows Cost?
Typically, homeowners in Rockford can anticipate that most window installations will range from $250 to $1,200, with the most common installations sitting at about $600. How much it will cost varies depending on several factors, like the location of your home, size, number of windows, type, material and more.
It’s important to keep in mind that windows with the best efficiency may cost more upfront but can save you hundreds of dollars by lowering your energy bills. Investing in Energy Star certified windows can save Rockford homeowners $318+ a year when replacing single-pane windows.
We advise requesting free quotes from multiple window installers to find the one that works best for you.
What Services do Window Installers Offer?
There are generally two kinds of window replacement services: full-frame and pocket installations.
A full-frame installation is a total window replacement. It involves removing the old window, the sill, and the exterior and interior trim. It also involves extra materials, including insulation and drip edges, which increase the total cost of the project. Also worth noting: you may have to touch up the paint surrounding the window after a full-frame installation. A pocket installation entails replacing a window within the existing frame, which tends to be less expensive than a full-frame installation.
Your window installation company can advise you on the best type for your project. In Rockford, the decision will mostly be based on the efficiency of your home and the age and condition of your existing frames.
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 Rockford
EcoWatch differs from other reviewers because we examine these companies through a sustainability lens. We’ve decided to assess the best window installation companies in Rockford mostly based on their energy efficient offerings, as it’s what’s best for the environment and for you as a homeowner. Energy-efficient windows can cut your energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
This one is self-explanatory, but we’ve chosen to highlight window installers that serve the Rockford area so you can find a quality window installation company near you.
Work Quality
When it comes to new windows, the quality and range of services can often play just as important of a role in insulation and performance as the brand you choose. We do give window installers higher marks if they offer high-quality products, but we also consider workmanship as reflected in customer feedback.
Customer Reviews
Another self-explanatory yet super important review factor is customer feedback. If the majority of customers don’t have nice things to say 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 most services, cheap window companies are not going to provide the most quality service. Still, we want to ensure we’re highlighting companies that offer a range of price and financing options so they’re accessible to most homeowners.
Warranty
As discussed, windows are a sizable investment, so you’ll want to make sure that investment is well protected. Window installation companies that give you lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Lastly, we like to see companies that have a good track record in the industry. Window installers that have more experience earn higher rankings by our standards. We like to see at least ten years of experience.
Rockford, IL Window Replacement FAQs
How much should window installation cost?
The typical cost to install a window can range from $450 to $650. There are several factors that influence how much it costs, including your property’s location, the number of windows, the materials used in designing the windows, local labor costs, styles and sizes of windows and how energy-efficient the windows are.
Which kind of window is the best?
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.
What services do window replacement companies do?
Window installers travel to your home to remove your old windows and replace them with new ones. Some companies install products made by other companies, whereas others are both manufacturers and installation companies combined. The installer will also clean up after the installation is done.
What time of year should I replace my windows?
Though you can install windows any time of year, warmer weather is often better for replacing windows. Additionally, it shouldn’t be raining, as rain can make the installation harder.
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, 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 need to be replaced.