The Hygieia Motor Filter for Dyson DC07 and DC14 Vacuum Cleaner plays a crucial role in keeping dust from entering the vacuum cleaner motor. It is essential to change the filter when it becomes dirty, as this can prevent the motor from becoming clogged and potentially damaging the vacuum cleaner. If the filter is not changed regularly, it can result in poor suction from the vacuum cleaner and increased energy consumption. Replacing the motor filter is an easy maintenance task that can be done quickly.