The auto-restart function ensures that if a power outage occurs, the system will automatically return to its previous settings once power is restored. This is particularly important for server rooms or wine cellars cooled by our Bravo Milano 12,000 BTU Universal Floor/Ceiling units. In a Penta-Zone configuration, the system remembers the specific temperature and fan speed for all five heads individually. To safeguard against the electrical surges that often follow a blackout, we recommend browsing our Accessories for surge protectors. This set-it-and-forget-it technology is standard across all Multi-Zone packages. It eliminates the need to manually re-configure every room in the house after a brief utility blip. For those using the system for primary heating, this memory function is a vital safety feature during winter storms.