One of the biggest selling points of brand new windows? Energy efficiency.
You’ve probably heard the claims, “Lower your monthly energy bills and help Mother Earth!” and “Windows have an awesome return on investment!”
But let’s look at the hard science for a minute here. What do people mean when they say windows are energy efficient? And what’s the supporting science?
Simply put, your windows act as barriers. In the winter they keep the cold out, and in the summer they keep the cold in.
So what exactly allows them to do that? And why might one type of window be better at it?