Passive Houses

More and more people have been changing their houses to be energy efficient. But other people are changing their houses to be something called Passive Houses. Energy Star Homes save 20-30% more energy than normal homes. Passive Houses save around 60-70% more overall energy.These are amazing houses and very easy and useful. Citation:www.motherearthnews.com/green-homes/passive-house-zm0z11zphe.aspx