My house was built in 2010 so my windows are pretty new. They are double pane, Low E glass, with argon (I think) between the panels. They are sliding windows. Would there be any advantage to putting up the shrink wrap? I wasn't sure if I would have an improvement or not since my windows are new, but sliding windows I know aren't always the most efficient either. My parents have older windows and they notice a big difference when they use vs when they don't. I live in Minnesota, so it gets fairly cold outside.