Attic insulation is especially important because it will help keep your home warm during the cold Colorado winters and cool during the warm sunny summers. Attic insulation resists the transfer of heat between the interior of your home and the attic overhead. Because air naturally transfers from a warmer to a cooler zone, heat is always moving the wrong direction for optimum household efficiency. During the winter, heat in warm rooms rise and pass into the attic through the ceiling by conduction or radiation, or through direct air leaks. Your furnace will run longer to make up for lost warmth and heating costs will rise. In the summer, your hot attic space heats up interior rooms below, causing your cooling equipment to run for longer periods of time and increasing your cooling bills. But blown in insulation, can help prevent this and keep your home at a comfortable temperature.