Energy-efficient Replacement Windows in Indianapolis mean Summer-ready

"When choosing new windows though, locals may remember that back in July, 2012, local temperatures reached as high as 105 degrees in the city. While the outlook for this summer isn’t as hot as that, it’s a smart move for locals to go for energy-efficient windows in Indianapolis to prepare themselves for the worst. This way, they can have an enjoyable staycation for the rest of the summer. There’s confusion though on what makes windows energy-efficient. Some homeowners think that these windows’ main purpose is to keep energy costs down, but this only tells part of the story. These windows also work to keep the hot air out and the cold air in. Indy locals have to keep an eye out on solar heat gain coefficient or SHGC, which measures how well windows block heat from the sun. The lower the value, the less heat comes in through the window."
http://suburbanglass.net/energy-efficient-replacement-windows-in-indianapolis-mean-summer-ready/