With the power off and the canister removed, address the unit itself.
The power unit, usually located in a garage or basement, is the heart of the system. how to clean central vacuum system
The inlets are where you plug the hose in. Over time, these get dirty and can harbor germs. With the power off and the canister removed,
Additionally, the hose itself requires attention. If you notice a lingering smell or decreased airflow, you can "flush" the hose by vacuuming up a small handful of baking soda to neutralize odors. Check the hose ends for any cracked seals or debris that might interfere with the electrical connection to the power head. The Finishing Touches Over time, these get dirty and can harbor germs
To prevent clogs, never vacuum large quantities of pet hair without breaking it up, and avoid vacuuming wet items (unless you have a wet/dry central vac).