There is the so-called phantom consumption, which is that carried out by the devices that we leave connected to the electrical network, even if we do not use them.
However, the post you are reading is about something simple but effective: the correct maintenance of a device that is commonly used and to which we do not pay too much importance:
The vacuum cleaner.
Many times we wonder where so much expense comes from and rarely do we ask ourselves what a vacuum cleaner uses. This is not a discreet appliance.
As the OCU Consumer Advice Centre points out, although the European Union has forced manufacturers to reduce the power of vacuum cleaners, the cost is about $0.25 an hour. That is, if you vacuum only once a week, you would be paying €12 for a year
The less time it takes to vacuum the whole house, the better, but running down the hall will be of no use if the vacuum cleaner does not have a proper brush and you have to go over the same area several times to pick up all the dirt properly. Change the brushes as soon as you notice that you have to go over the same place more than twice