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5.0
260 reviews

Illinois Energy is my go-to!

Sandra L.

I have used Illinois Energy since 2009 for my window replacement needs. Having a "semi-custom" home built during the early 2000's, the builder quality windows are not great. So as issues arise, we are gradually replacing the windows that fail. Illinois Energy is not the cheapest, but we already HAVE the cheapest, and we see where that got us. Their lifetime guarantee is no joke, and they are responsive and dependable. For as long as I own a home, I will definitely depend on Illinois Energy!!!

Illinois Energy Windows & Siding

Thank you so much for your thoughtful review and for being a loyal customer since 2009! We truly appreciate your continued trust in us for your exterior projects. It’s fantastic to hear that our commitment to quality and our lifetime guarantee have made a difference for you. We’re here to support you as you make improvements to your home, and we look forward to serving you for many more years to come! Illinois Energy Management

Great Experience!

Bob F.

We had a front entrance door and basement patio door replaced as well as having the garage door framing/siding redone. Our door installer, Jerry, did amazing work and went above and beyond addressing an additional need that came up. Very meticulous and thorough. Our garage door framing was done by Josh, who also did great work and addressed an additional need that came up. It was a great experience.

Illinois Energy Windows & Siding

Thank you so much for your wonderful review! We’re thrilled to hear that both Jerry and Josh exceeded your expectations with their meticulous work and it’s great to know they were able to address those additional needs as well. Your satisfaction is our top priority, and we appreciate you taking the time to share your experience. Illinois Energy Management

So Glad We Didn’t Wait!!

Karen F.

When we met with Garrett, we were only getting estimates for the future because we were getting married and hosting a reception at our home in 2 months. Garrett worked with his team to make the install happen before the reception. Everything was easy exactly as Garrett had planned. Our estimate process was smooth, financing was easy, the staff was friendly and professional, install scheduling happened as we planned, and the install team was fabulous as well. We had a window, sliding door with transom, and storm door installed before our wedding no clean up or extra work on our part. The quality of the products are top notch and the end results are beautiful. As we continue the journey to replace the aged and failing builder grade materials in our home, we will definitely be using Illinois Energy again!

Illinois Energy Windows & Siding

Thank you for your fantastic review! We’re so glad Garrett and our team could meet your timeline for your wedding reception. It’s great to hear that everything went smoothly, from the estimates to the installation. We appreciate your kind words about our staff and the quality of our products. We look forward to helping you with future projects as you update your home. Congratulations on your marriage, and thank you for choosing us! Illinois Energy Management

Great install and customer service

Peter W.

IEW installed all our windows a few years ago...went without a hitch. Recently we added a small job (1 bathroom window) and they were kind enough to accept. Installers were professional as usual and courteous. They even noticed an nearby window that could use some additional caulk. After years of use our sliding screen door needed adjustment. They came out and determined we would be better served with a new screen door. No charge, as everything is under lifetime warranty. They are a small company that values customer satisfaction....who doesn't want that?

Illinois Energy Windows & Siding

Thank you so much for your wonderful review! We're thrilled to hear about your positive experiences with our team, from the initial window installation to your recent projects. Our goal is always to provide top-notch service and ensure our customers are happy with their homes. We're glad you appreciated the attention to detail and our commitment to your satisfaction. Illinois Energy Management

We love Illinois Energy!

Jesse B.

This is not the 1st time that Illinois Energy has done work for us. As for a fact, we've been so happy with their work, we didn't ask anyone else for a 2nd quote. We needed a new front & back Door and we were educated along every step. Jerry was our installer and he is FANTASTIC! Jerry is a true craftsman; he paid attention to every detail and kept us informed each step during installation. I can't give enough credit to Jerry's professional work ethics! We will only use Illinois Energy!

Illinois Energy Windows & Siding

Thank you so much for your wonderful review! We're thrilled to hear that you chose us again for your door installation and that Jerry made such a positive impact on your experience. His attention to detail and commitment to communication are truly valued, and we’re lucky to have him on our team. We look forward to working with you again in the future! Illinois Energy Management

Fantastic Service

Nick H.

This was our first time using Illinois Energy and we went all out, 22 windows replaced, front and back, 1st and 2nd floor. This installation went great, they scheduled 3 days and completed the work in 2 days. Both days went very smoothly, they arrived on time and starting working. They removed the windows and window treatment with care and installed the new windows, put the window treatments back in place, cleaned up and you didn't even know they were there. Any time I had a question they answered me clearly. When I asked about the screens they showed me how to remove them and showed me how to open the windows to clean the outside. The day after they left my cleaning lady cleaned my house and never mentioned any extra work, she did comment how nice the new windows looked.

Illinois Energy Windows & Siding

Thank you for sharing your fantastic experience! We’re so glad to hear that your first window replacement project went smoothly. Our team works hard to ensure timely and careful installations, and it’s great to know you appreciated their attention to detail. We love that your cleaning lady noticed the difference too! If you have any questions down the line, feel free to reach out. Enjoy your beautiful new windows! Illinois Energy Management

New door

Darlene M.

Installer was very good. Very detailed. Good result.

Illinois Energy Windows & Siding

Darlene! Thank you for your review, we're happy to hear everything went well for you guys. Thank you for your business and support. Illinois Energy Management

Windows replacement

Lois B.

I had Illinois Energy Windows & Siding replace some windows in my home. The new windows are an excellent quality product. The workers arrived on time, did an excellent job installing the windows, cleaned up completely after they were done, and finished in a reasonable amount of time. Overall, it was an excellent experience with this company.

Illinois Energy Windows & Siding

Thank you so much for your review! We’re happy to hear that you’re happy with your new windows and the installation process. Our team takes pride in delivering quality products and exceptional service, so it’s great to know that reflected in your experience. Illinois Energy Management

New window installation

Yd S.

Extremely happy with the quality of window and the overall installation process. Quality of window is better than the leading brands, and value for money. Given my project was complex, I wanted a trusted installation team. Installation was done well by Illinois Energy’s team and sent their own installation team, instead of sub-contracting the installation. They took overall responsibility of supplying the window and installation.

Illinois Energy Windows & Siding

Thank you for your wonderful review! We're so pleased to hear that you’re extremely happy with both the quality of our windows and the installation process. It’s great to know that you found our product to be better than leading brands and a good value for your complex project. We take pride in using our own dedicated installation team to ensure a smooth experience from start to finish. Your trust in us means a lot, and we appreciate your recommendation. If you have any more projects in the future, we’d love to help again! Illinois Energy Management

Love my new door!

Angelique I.

The sales rep was knowledgeable and helped to narrow down the best options for us. Measurements were accurate and once the door was available, installation was scheduled quickly. The installer did a great job and made sure every detail was attended to.

Illinois Energy Windows & Siding

Thank you for sharing your experience! We're glad to hear that our sales rep was able to assist you in finding the best options and that the measurements were spot on. It’s great to know that the installation was scheduled promptly and that our installer paid attention to every detail. Your satisfaction is our priority, and we appreciate your kind words. Illinois Energy Management

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Main Office & Showroom Illinois Energy Windows & Siding


  • 430 Ogden Ave, Lisle, IL 60532
  • Open Mon-Thurs: 9 AM - 8 PM, Fri-Sat: 9 AM - 2 PM
  • (630) 333-1823