2. Is the bag/filters working properly?
A vacuum’s performance will diminish if it becomes clogged by debris, or if the bag and filters get neglected. If the machine is not sucking up dirt like it used to, it’s likely because of a
restriction in airflow.
There are two ways to fix this issue: replace the bag, then the filter(s).
First, replace the bag even if it’s not full. The pores could be clogged by fine dust particles, causing a restriction in airflow.
Second, air filters should be changed at least twice a year. Some models have two, one before the motor and one after, and both need to be replaced. The machine’s performance after the change should be prominent.