Using this filter set is easy. First, turn off and unplug your Electrolux UltraPower vacuum cleaner. Open the filter compartment and remove the old filters. Then, simply insert the new filters from this set (EF142) into the correct slots according to the part numbers (2198213015 and 2198214013). Make sure they fit snugly. When it comes to maintenance, check the filters regularly. If they look dirty or clogged, it's time to replace them. And remember, always use genuine replacement parts like this set for the best performance and to avoid any damage to your vacuum. Also, keep the vacuum in a dry place when not in use to extend the life of the filters.