Hello,
I've had the windows for 3 years now, I waited a while to post a review to see any difference. Since we had the windows installed in the living room and dining room we have incrementally been paying an extra $10 a year in the summer. We only did the living room and dining room because that is where the biggest windows are located.
I just want to present you with facts and no opinions. The windows do not work as advertised.
There is a warm spot in our living room, our house faces east, the sun shines in that area for most of the day and it is the warmest spot in the house. I took the temperature before and after the windows were done in that area. The temperature in that area is 80 to 85 degrees when we have the A.C set to 77 degrees and it is 100 degrees outside. The temperature was the same with the old windows.
2 windows cost me $5000. Not worth it. There is no option, they only have one model of windows.