You can save up to 50% to 80% on your energy bills. These insulated concrete walls keep the hot and cold air out of your home. An ICF home is extremely air-tight. Energy savings from reduced air infiltration are obvious when you look at the large amount of heat and cooling losses experienced in traditionally built houses. You will also notice that the temperature remains constant no matter what part of the house you’re in. Your house will stay cool in the summer and warm in the winter with uniform temperature throughout the home.