Our old 1904 craftsman home suffered from loss of energy and cold temperatures around our windows every winter, as well as some city noise intrusion. We have had the Indow windows in place for 60 days now and couldn't be more pleased. Today it snowed and had it been last year, we would have had very cold drafts around our bedroom and living room windows whereas today it doesn't feel drafty at all. The other noticeable difference is we don't hear cars drive by or pedestrian voices as much as we used to. When we think of the low cost of installing Indow versus paying 6x to replace the windows, this was a no brainer. We are looking forward to seeing less energy loss through the windows during a hot summer too when we want to keep the house cooler. Aesthetically, they are not even noticeable (we have had to take house guests all the way up to the window to help them see the inserts) and fit seamlessly inside our windows. The material used to mold the edges is flexible and did well with uneven/not perfectly straight frames. We couldn't be more pleased with the initial consult, the installation and how well they have worked for us. Great communication, realistic information given to us, and no hard sell.