A carpet blower is used to dry out carpeting from the underside. You must first vacuum or soak up as much water as possible. Then pull up carpeting which has gotten wet and cut out the wet carpet padding and dispose of it. The padding is basically a sponge which will rarely dry completely and may lead to mold or mildew. The carpet blower is then put under the carpet and run until the carpet base and sub-flooring are 100% dry. This item does require a standard 110v power supply.