The Home UPS System is very good as back-up system for residential homes. It can replace the noisy radiator and does not use gasoline as source of power. The inverter/UPS system charges batteries when there's a continuous flow of electricity from the grid and acts as back-up power once power from the grid bogs down. For continuous use, once in the UPS mode, it also acts as back-up for sensitive equipments such as computers and refrigerators.