Replacement Windows

Replacement Windows for Chicagoland Homes

For 20 years, Illinois Energy Windows & Siding has been the premier Chicagoland window company, specializing in high-quality products that instantly lower your energy bills. In fact, we’ve installed more than 100,000 replacement windows over the years and have helped Chicagoland homeowners realize more than $15 million in energy savings!

Not just pushing the boundaries of energy efficiency, we make sure that every window installation is equally beautiful, weathertight, and secure. We aim for 100% satisfaction, and we leave nothing to chance.

Financing with No Interest Until Fall 2025!

We can help you get approved for the most competitive rates on your home improvement project.

Home of the True Lifetime Warranty on Parts and Labor

We offer a true lifetime guarantee on both labor and materials!

Seniors and Military Members: Enjoy a Special Discount Just for You!

Since 2002, Illinois Energy Windows & Siding has been the exterior remodeling expert in the Chicagoland area. If you’re a local senior citizen or a part of the military, police, or fire department, you can enjoy an extra discount on already affordable services! Call today to learn more.

Window Styles

  • Awning Windows: Hinging outward from the top, these compact windows are versatile and can be opened even during light rain.
  • Bay Windows: With three angled windowpanes that extend beyond your home’s exterior walls, bay windows command attention from the curb.
  • Bow Windows: Bow windows are similar to bay windows but have a gentle curve that’s elegant and eye-catching.
  • Casement Windows: These windows swing inward or outward from the side, offering a full sash worth of fresh air.
  • Double-Hung Windows: Two operable sashes, instead of the standard single sash, give you even more ventilation.
  • Garden Windows: Get a sunlit nook for plants, flowers, herbs, or small décor with this unique all-glass window enclosure.
  • Basement Hopper Windows: Most common in basements, hopper windows work anywhere you need some extra light and fresh air.
  • Picture Windows: Unique among windows, picture windows do not open. In exchange for the stationary design, you get wide-open views and unmatched efficiency.
  • Slider Windows: Open your windows with ease, without compromising on high security or energy efficiency when closed!
Our Services

Energy-Efficient Windows that Outperform the Rest

Your home window replacement couldn’t be in better hands than with our locally owned, nationally recognized business.

Windows Options & Materials

Windows Options & Materials

To meet your window needs at any price point, we offer a variety of house window replacement options. Our local experts can help you choose between vinyl, wood aluminum clad, and more.

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We’re proud to be an ENERGY STAR Partner, and our signature option for unmatched energy savings is SmartGlass365. This insulated glass blocks UV rays, reduces heat transfer, and dries 99% free of water spots. Does it get any better?

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Best Quality, Best Warranty, Best Service—All for a Reasonable Price

Local Legacy

You can see examples of our five-star quality first-hand, even in your own Chicagoland neighborhood!

Satisfaction Guarantee

We’ve succeeded for 20 years, because we settle for nothing short of total satisfaction.

Stellar Reputation

From “Best of HomeAdvisor” 2020 to countless positive reviews, we’re known as the best!

Finest Windows

Our replacement windows are exceptionally durable, tough, and well-constructed.