We were looking for something to keep our sun room warmer as it is considered the woman of the house's preferred room when the sun is out. There are windows on three sides. Always cool in the winter months and hot in the summer.
After installation there was a noticeable difference in the sun room over the winter months - difference from living room (attached) was 3 degrees. Very comfortable.
Waiting for the summer months to reverse the blinds to reduce the heat and keep the sun room cooler and more comfortable.
Definitely do not regret the purchase and highly recommend the product