"From start to finish our experience was excellent. Tome our salesman was very professional and knowledgeable. Our install was timely and done in a skillful manner by Jerry. This is our second time using this company and we are very satisfied with their products. Great warranty!!"

"Garrett was great to work with. He explained all of our choices to replace the entryway door with side and transom glass. The door was installed expertly by Jerry(?) who cleaned up before he left. We have received many compliments from neighbors. I highly recommend Illinois Energy Windows and Siding, Inc."

"I've used this company before about 20 years earlier to replace all my upstairs windows and called them when it was time to replace a few downstairs. The sales process was pleasant, the windows came sooner than expected, and the financing offered was easy and fair. The installer showed up on time, finished the job in a day (2 windows), and left my home as he found it. Both windows are very tight but I expect them to loosen up slightly over time but I know they'll come back to adjust if necessary."

"Tom came for a consultation to replace our sliding door and was super personable. He gave us a quote and didn't even try to sell us more than what we needed/was looking for. IEWS does everything with quality and customers in mind and the technician that came out answered all of our questions and even suggested a few things that they don't offer. They forgot to include the foot lock when installing it and promptly came out the next week to install it no charge. We appreciate the work they do and will definitely be a repeat customer on our other windows and doors."

"We have used Illinois Energy on three separate occasions for upgrades to our home over the past several years. The Sales team and installation team are friendly and very helpful throughout the whole process. They are highly recommended."

"Windows were expertly installed and treated lumber was utilized to repair damage over the years. A crew of three knocked out the job with great skill and efficiency."

"The sales process was very professional and provide complete information on the product. The installation crew was fantastic; they were very professional, explained everything in the process, were neat, very polite and provided a great installation. I would recommend them to everyone I know."

"I had all my windows replaced by Illinois Energy Windows & Siding and the experience was excellent from start to finish. The installation met the standards I expected and they checked in afterward to ensure everything was right. They are on the pricier side, but you get top quality and what feels like the best warranty money can buy from a company that has been around for years. I highly recommend them."