We are in our summertime heat. Our entire home had replacement windows and patio doors installed recently. Today the outside temperature is 105. It’s 80 degrees inside our home. We set our AC units for 80 degrees inside, we have multiple ceiling fans, the AC units to date have not turned on! The energy savings plus the quietness provided by these new windows is truly amazing! The return on the investment of these windows will be much sooner than expected. Also, the installation crew completed the installation of all 19 windows, 3 sliders and two man doors in two days and left no mess. These windows are a great value!