While vacuum packs are great for compressing your clothes to take up less luggage space when you go on a vacation or simply to keep mildew at bay during long storage situation, they can be quite hard on a vacuum cleaner - the air that the vacuum cleaner sucks in also serves to cool the motor!

Without sufficient cooling, the motor would overheat. Higher-end vacuum cleaners would usually have a thermal overload switch which will kick-in and automatically stop the vacuum cleaner, preventing further damage to the motor.

So if you do use vacuum packs with your vacuum cleaner, be sure to allow the vacuum to cool between vacuuming several packs or simply allow the vacuum to run without any load for a few seconds after each use.