: Turn off the power and unplug the system. Detach the hose from the wall inlet and remove all accessory wands or brushes. Lay the hose flat and shine a flashlight through one end to check for major blockages.
Never use a wet hose. Moisture trapped in the hose will travel to your central unit, potentially damaging the motor or causing mold to grow in your walls. how to clean central vacuum hose
Submerge the hose completely. Avoid getting the "handle" or "cuff" electronic pins wet if you have a powered hose (electric version). : Turn off the power and unplug the system
Never push a blockage further toward the canister. Go outside. Detach the hose from the wall. Attach the hose’s handle end to your leaf blower or compressor nozzle. Seal the connection with a rag. Blow air backwards through the hose toward the open end. Do this away from your house. Large clogs will shoot out like cannonballs. Warning: Stand clear; debris exits at high velocity. Never use a wet hose
: Hang the hose vertically over a shower rod or door to allow gravity to drain all moisture.
If your hose smells, you need to break down the film of grime inside the ridges.