We highly recommend Illinois Energy.
We met with Alex Haas of Illinois Energy in October, 2013 about window replacement. He was extremely knowledgeable and answered all our questions. We were impressed with his professionalism, the quality of the product and the excellent warranty so we decided to have 3 windows in our bedroom replaced. Up to that point we had many problems with the windows in this room. There was difficulty locking the windows, condensation, and the biggest problem-leaking. Whenever there was rain, we had to line the sills with towels to absorb all the water that was leaking. This also caused damage to the window sills. The installers were working in very cold weather, yet they took their time to make sure the job was completed properly. The windows look beautiful, they work smoothly, but the most important test came when it rained. There has been no leaking and no condensation. We are very happy with the new windows and are having Illinois Energy replace more of our windows.
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