We actually implemented this simple, low-cost solution to keep the cold out this past winter, and I was surprised how much of a difference it made in the temperature of our coldest rooms. We were able to reduce our heater usage by a significant amount and didn’t have to invest in anything expensive or permanent. I thought I’d be removing our temporary window coverings when the weather warmed up, but it turns out that the same solution works for keeping the heat out and cooling down a room during the warmer months as well! What can you do to keep the blazing sun from creating stifling heat in your bedroom…