21 Best Window Replacement Companies in Rockford, IL (Mar 2023)
Window Companies Near Me
If you're looking to get new windows, our list of the best window installation companies can help.
We analyzed all the top window installers in Rockford and selected the top 21 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 March 14, 2023
Why you can trust EcoWatch
A guide on the best window installation companies in Rockford may not seem like the most compelling article on EcoWatch, but trust us, windows have more of an impact on your life than you might realize. According to the Department of Energy, heat or cool air lost through traditional, outdated windows could be responsible for 25-30% of heating and cooling use.
Installing upgraded, efficient windows on your home can help you save money each month on your energy bills — and you can help the environment, too.
Efficient windows are especially important in Rockford, where the temperature varies throughout the year. According to Energy Star, making the switch to energy-efficient windows can save the average homeowner up to $318 a year.
Best Affordability
Window World
- EnergyStar Partner
- Large serice area
- Low prices relative to competitors
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Award-winning company
- Member of US Green Building Council
- More expensive than competition
Best for Residential Windows
Window Nation
- Wide variety of products and services
- Manufactures products in-house
- Custom designs
- Installation not covered by warranty
Best Window Replacement Companies in Rockford
The EcoWatch team researched many window providers across Rockford to narrow our list down to the best ones. The companies we've mentioned in this article passed our review standards for energy-efficient offerings as well as local expertise, price, customer service and beyond.

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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Quality of service will depend on your area
Window World offers windows expertise in Rockford. Window World has over 27 years of industry experience, and it currently serves 200 locations nationwide. The provider has many glowing reviews from customers on online review websites.
Window World may be the company for you if you're interested in 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 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 Rockford?Prices are not available on Window World's website because 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 ask for 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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Member of US Green Building Council
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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 around 27 years of experience in the industry, and it currently serves nearly every state except Mississippi and West Virginia. Its reputation is backed by several 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 WindowsThere are a wide variety of window types available from Renewal by Andersen, 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 Rockford?Pricing details are not available on Andersen's website because the cost of window replacement differs 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. The best way to get more accurate information is to ask for a free quote from the company.

Window Nation
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Wide variety of products and services
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Manufactures products in-house
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Custom designs
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Installation not covered by warranty
Window Nation has the best residential windows in Rockford. It's a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. This window installation company has been in business since 2006 and currently serves residents within 75 miles of its showrooms, which are in 13 states. Hundreds of positive reviews from customers online 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 available from Window Nation, 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 Rockford?Though pricing information is not readily available on Window Nation's website, 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 the cost, you can inquire about 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 has the best warranty in Rockford. This window installation company has been operating since 2002 and currently serves 27 states nationwide.
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 high-quality 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 Rockford?Universal doesn't have any prices listed 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. Receiving a free quote on its website is the best way to get more accurate information.
We've recommended installers with good reputations, but keep in mind some national companies have independently owned locations in Rockford, so the quality of service may depend on your local crew. We have tried to stay unbiased and transparent by mentioning pros and cons for every company we reviewed.
More Window Replacement Companies in Rockford
Window World of Rockford
Loves Park, IL-
No-fee Quotes
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Price Transparency
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Arrives on Time
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Dependable Service
Services Offered
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Energy-Efficient Options
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Tempered Glass
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Custom Window Designs
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Double-Hung
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Sliding Glass
INNOVATION Shower Glass Doors
Rockford, IL-
No-fee Quotes
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Excellent Customer Service
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Price Transparency
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Helps Educate Customers
Services Offered
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Residential Windows
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Glass Showers
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Tempered Glass
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Custom Windows
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Commercial Windows
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Double-Hung
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Sliding Glass
Aurum Contracting
Beloit, WI-
Consistent Workmanship
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No-fee Quotes
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Helps Educate Customers
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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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Business Windows
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Stained Glass
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Sliding Glass
Rockford Siding and Windows LLC
Loves Park, IL-
Educational Website
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Price Transparency
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Free Quotes
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Excellent Customer Service
Services Offered
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Residential Windows
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Energy-Efficient Options
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Custom Windows
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Commercial Windows
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Double-Hung
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Sliding Glass
Advanced Construction of Janesville
Janesville, WI-
Reliable Service
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Timely Service
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Free Quotes
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Price Transparency
Services Offered
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Custom Windows
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Residential Windows
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Business Windows
Lask Exterior Solutions, LLC
Loves Park, IL-
No-Hassle Pricing
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Consistent Workmanship
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Good Customer Service
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No-fee Quotes
Services Offered
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Custom Window Designs
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Residential Windows
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Energy-Efficient Options
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Business Windows
Home Services at The Home Depot
Rockford, IL-
Helps Educate Customers
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Excellent Customer Service
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Dependable Service
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Price Transparency
Services Offered
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Custom Window Designs
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Fast Delivery
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Energy-Efficient Options
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Sliding Glass
Glass Enhancements
Loves Park, IL-
Excellent Customer Service
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Educational Website
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No-fee Quotes
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Consistent Workmanship
Services Offered
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Custom Window Designs
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Residential Windows
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Energy-Efficient Options
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Business Windows
Platinum Quality Home Improvements
Freeport, IL-
Consistent Workmanship
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Good Customer Service
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Free Quotes
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Price Transparency
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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Sliding Glass
A O Bauer Glass Inc
Delavan, WI-
No-fee Quotes
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Educational Website
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Good Customer Service
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No-Hassle Pricing
Services Offered
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Residential Windows
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Doors
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Custom Window Designs
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Commercial Windows
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Double-Hung
Rockford Auto Glass
Rockford, IL-
Helps Educate Customers
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No-fee Quotes
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No-Hassle Pricing
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Good Customer Service
Services Offered
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Residential Windows
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Custom Windows
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Business Windows
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Double-Hung
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Sliding Glass
Hiester Construction, Inc.
Freeport, IL-
Reliable Service
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Price Transparency
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Good Customer Service
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Arrives on Time
Services Offered
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Custom Window Designs
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Stained Glass
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Double-Hung
Ability Glass Service - A Division of Rockford Auto Glass
Rockford, IL-
No-fee Quotes
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Excellent Customer Service
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Helps Educate Customers
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No-Hassle Pricing
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
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Sliding Glass
Pella Windows & Doors of Rockford
Rockford, IL-
No-Hassle Pricing
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Free Quotes
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Excellent Customer Service
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Helps Educate Customers
Services Offered
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Custom Window Designs
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Architectural Glass
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Sliding Glass
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Double-Hung
Feldco Windows, Siding & Doors
Rockford, IL-
No-fee Quotes
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Excellent Customer Service
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No-Hassle Pricing
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Helps Educate Customers
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
Superior Roofing Inc
Belvidere, IL-
Free Quotes
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Price Transparency
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Educational Website
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Excellent Customer Service
Services Offered
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Custom Window Designs
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Residential Windows
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Business Windows
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Sliding Glass
Garay Windows & Doors
Union, IL-
Educational Website
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Excellent Customer Service
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No-Hassle Pricing
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No-fee Quotes
Services Offered
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Custom Windows
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Double-Hung
Kobyco Inc
Loves Park, IL-
Award-Winning
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No-fee Quotes
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Excellent Customer Service
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No-Hassle Pricing
Services Offered
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Custom Windows
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Sliding Glass
Crown Exteriors, Inc.
Genoa, IL-
Excellent Customer Service
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No-fee Quotes
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No-Hassle Pricing
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Supports Charities
Services Offered
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Custom Windows
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Double-Hung
ABC Seamless of Janesville Inc
Janesville, WI-
No-Hassle Pricing
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Educational Website
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No-fee Quotes
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Good Customer Service
Services Offered
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Custom Window Designs
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Residential Windows
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Sliding Glass
Budget Home Improvement Inc.
Janesville, WI-
Dependable Service
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Price Transparency
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Excellent Customer Service
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No-fee Quotes
Services Offered
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Custom Window Designs
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Energy-Efficient Options
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Sliding Glass
How Installing Energy-Efficient Windows in Rockford Saves You Money
By switching to energy-efficient windows, you and your family can take advantage of several benefits, such as:
- Protect your investment: The older your home is, the more likely it is that getting new 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: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing your furniture, carpet and other valuables from fading.
- Decrease your carbon footprint: Decreasing the amount of energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by 449 pounds per year on average.
- Save money on energy bills: Since energy-efficient windows decrease the amount of energy used to heat or cool your home, they can help you save about $318 annually on your energy bills in Rockford.
Estimated Cost of Window Replacement in Rockford
Windows come in varying styles, purposes and shapes, so costs and services will differ considerably based on your project. Below, we describe the typical cost and services that you can get from window installers.
How Much Do New Windows Cost?
On average, Rockford homeowners can expect their window replacements to range from $250 to $1,200. The most common installations sit at about $600. How much it will cost varies depending on several factors, including number of windows, the location of your home, material, size, type and more.
Whether or not you want energy-efficient windows is another factor that will determine the cost. These will usually cost more than other windows, but on the other hand, you can save about $318 a year on your energy bills in Rockford.
How much your window installation costs will also vary based on the kind of material you choose for the frames. Wood windows are usually the most expensive, but it depends if they are solid wood or clad with aluminum or vinyl. Fiberglass windows also tend to be a bit more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
When considering window installations, there are generally two kinds that your installer will offer: full-frame and pocket installations.
Full-frame installations require replacing the whole window — the sill, frame, trim and all. These are most common when you want a new style for your windows or when it has significant rot or deterioration. Full-frame installations are more time-consuming and will increase overall costs. A pocket installation involves replacing a window without replacing the frame. This means instead of tearing out the whole window and rebuilding it, the contractor will just put the replacement window (also called a retrofit or insert window) into the frame.
Your window installer can help you choose which type of installation you need.
Best Affordability
Window World
- EnergyStar Partner
- Large serice area
- Low prices relative to competitors
- Quality of service will depend on your area
Best Overall
Renewal by Andersen
- Manufactures products in-house
- Award-winning company
- Member of US Green Building Council
- More expensive than competition
Best for Residential Windows
Window Nation
- Wide variety of products and services
- Manufactures products in-house
- Custom designs
- Installation not covered by warranty
How We Choose the Best Window Installers in Rockford
EcoWatch differs from most reviewers since we're examining these companies through a sustainability lens. Along with energy efficiency, we evaluated window companies all across the state and assigned rankings using the following methodology:
Service Area
Because this is a guide for Rockford, we gave more points to companies that cover the city. There are certainly reputable providers that didn't make the cut because they wouldn't be able to serve homeowners in Rockford.
Work Quality
We're certain that you're not looking for a company to do a shoddy 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 received plenty of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed trends in recent customer feedback to find the companies with the most consistent customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across nearly every category, including quality of parts, cost, quality of installation, professionalism, warranty and more.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers want to keep costs as low as possible. When analyzing providers' prices, we awarded higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
As discussed, windows are a hefty 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
Lastly, 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.
Rockford, IL Window Replacement FAQs
What is the average cost to replace windows?
The typical cost to replace a single window can range between $450 and $650. There are several factors that influence how much it costs, such as styles and sizes of windows, the materials used in designing the windows, your property's location, the number of windows, local labor costs and how energy-efficient the windows are.
What are the most common types of replacement windows?
The most common kinds of windows for homes include: awning windows, picture windows, casement windows, bay windows, double-hung and single-hung windows, slider windows and transom windows.
What services do window installation companies offer?
Window installation professionals visit your home to remove your old windows and replace them with new ones. Some providers install products made by other companies, whereas others install their own windows. The installer will also clean up after the installation is done.
How long does window installation take?
Since a window takes about 30 minutes to install, around 16 windows can be installed in a typical 8-hour work day.
Should I replace all my windows at the same time?
If you want to get more efficient windows and save money on energy costs, replacing all of your windows together is the only way to see a noticeable difference. On the other hand, if you have only one or two windows that are damaged or leaky, you can replace just those.