Berm Originally a clever response to the 1970s energy crisis, berm homes' popularity has waned little. By literally tucking a portion of itself into the earth, a berm home takes advantage of the relatively steady temperatures that good old-fashioned dirt enjoys. In the summertime, a berm home uses less energy to maintain a cool temperature. In the winter, it uses less energy to stay warm. Berm homes are smart, eclectic, and always a great topic for conversation!