If you have a child or pet who is scared of the vacuum, it’s probably because it’s so darn loud.
There are a few reasons why:
Fans: Vacuum cleaner fans rotate at high speeds so that they can collect everything. The airflow from the fan combined with the suction is enough to create loud noises.
Motors: Vacuum cleaners are electrical with motors. As a car does, vacuum cleaner motors make noises. If you want a quieter motor, choose a vacuum with a DC motor.
Vibrations: Vacuum cleaners vibrate because of the fans and the motors. This causes the vacuum to knock against the floors, resulting in a loud noise.
If your vacuum cleaner is louder than expected, or making strange noises, double-check the parts. There could be a blockage or breakage, causing the scary noises.