Why did my vacuum lose suction?

A vacuum almost always loses suction because air can no longer move freely through it, not because the motor has worn out. The usual causes are a full bag or bin, a clogged filter, a blocked hose or floor head, a tangled brush roll, or an air leak. Work through them from easiest to hardest and most machines come back.

Manufacturers describe the pattern the same way: suction loss usually comes from restricted airflow, caused by clogged filters, a full bag or canister, or a blockage in the hose, wand or floor head.^[1] The steps below find which one you have.

Start with the hose test

Unplug the vacuum, or take out the battery, and detach the hose or wand from the main unit. Plug in or reattach the battery, switch on and hold your palm over the exposed port. Strong suction there means a clog or leak in the attachments; weak or no suction points to the main unit, meaning the bin, filters or motor.^[1] That one test tells you which half of the machine to take apart. Robot vacuums have no hose, so for those go straight to the bin, filters and brush.

If suction is weak at the main unit

Full bin or bag. Empty a bagless bin even if it does not look full, and wipe the inside. On a bagged model, a bag more than two-thirds full can badly restrict airflow long before it looks stuffed.^[2] Change it earlier than you think you need to.

Clogged filters. A filter packed with fine dust chokes the airflow. Wash or tap it out as your manual describes, because foam, pleated and exhaust filters are cared for differently. If it is washable, make sure it is fully dry before it goes back in.^[1] The reason matters: Dreame warns that a damp filter can permanently damage the motor.^[2] Let it dry for a day, or swap in a spare.

If suction is strong at the port

The problem sits between the floor and the main unit. Detach the hose, wand and floor head and look through each piece. Common hiding places are the neck of the floor head, bends in the hose and the joints of the wand. Push blockages out carefully with a narrow tool such as a broom handle.^[1] Avoid sharp objects, which can puncture the hose and create a leak.^[2]

Then deal with the brush roll. With the machine unplugged, turn the floor head over and cut away the hair and thread wrapped round it. Check the belt too. A brush roll can still spin yet clean poorly when the belt is stretched.^[1] That gives you plenty of airflow and little pickup, which feels like weak suction.

Check for air leaks

If the motor sounds strong but little reaches the bin, look for a leak. Cracks, loose cuffs or a badly seated bin or door let air escape instead of pulling debris in.^[1] A high-pitched whistle or hiss is the classic sign of a leak.^[2] Press the bin and any filter doors fully home, check the hose along its whole length for splits, and replace a cracked hose or worn seal rather than taping it.

Stop and call a pro if

Stop and have the machine looked at if you see any of these, all of which Dreame lists as signs of a motor or electrical fault:^[2]

• A strong, acrid burning smell, which is different from an ordinary dusty odour.
• Loud grinding, screeching or rattling from the motor housing.
• Visible sparks through the motor vents.
• The vacuum shuts itself off repeatedly, which can mean overheating.

Do not keep running a machine that smells of burning.

Getting it fixed

If the checks above find nothing, the motor, a circuit board or a cordless battery is the likely culprit, and parts and labor can add up quickly. Read how much vacuum repair costs in Virginia before you decide between repair and replacement, and see how to maintain a vacuum so it keeps its suction once it is working again. More guides are in electronics repair answers, and you can find shops through small repair pros on Loclis.

When you are ready, describe the fault and local repair businesses can quote it.