Start with the simplest fixes first

Most Dyson problems are not broken parts—they are clogged filters, a full dust bin, or a blockage in the hose. Before you assume the motor is dead, empty the bin completely, check that the filter is clean, and look for hair or debris wrapped around the brush bar. These three things cause nine out of ten "broken" Dysons to stop working.

The dust bin on a Dyson fills faster than you think, especially if you have pets or a large space. Even if the bin looks half full, suction drops sharply once you hit about 75 percent capacity. Empty it after every use, or at least every time you notice the suction weakening.

Key Takeaways

  • Empty the dust bin fully and tap the filter against a trash can to dislodge trapped dust before assuming the vacuum needs repair.
  • Check the brush bar for hair wrapped around the bristles and the hose for blockages by shining a light through it or running water through it.
  • Dyson filters need cleaning every month and replacement every 12 months, depending on use—a clogged filter cuts suction by half.
  • If the motor runs but produces no suction, the problem is almost always a clog or filter, not the motor itself.
  • Contact Dyson support or a repair shop if the motor does not turn on, the battery does not charge, or you hear grinding sounds from the motor.

Clean or replace the filter

The filter is the most common culprit. Dyson filters trap fine dust and lose suction when they clog. You can clean the filter yourself—tap it gently over a trash can to shake out loose dust, then rinse it under cool running water. Let it dry completely (at least 24 hours) before putting it back in. Never wash it in a dishwasher or use hot water.

If the filter is more than a year old, or if cleaning does not restore suction, replace it. Dyson sells replacement filters for each model—check your vacuum's model number (usually on the back or bottom) and order the correct one. A new filter costs between $40 and $80 depending on the model. Install it by twisting it into the filter housing until it clicks.

Clear blockages in the hose and brush bar

Hair and debris get stuck inside the hose and around the brush bar, killing suction or stopping the brush from spinning. Detach the hose from the main unit and hold it up to a light—you will often see a blockage when ready. If you do, use a straightened wire coat hanger or a plumbing snake to push the clog out, or run warm water through the hose to flush it.

For the brush bar, flip the vacuum over and look at the spinning bristles. Hair wraps around the bar and the end caps. Use scissors or a seam ripper to cut away the hair, then spin the bar by hand to make sure it moves freely. If the bar does not spin after you remove the hair, the motor may be damaged—contact Dyson support.

Check the battery and charging port (cordless models)

If your Dyson is cordless and will not turn on, the battery may be dead or the charging port may be blocked. Plug the charger in and leave it for at least 3 hours. If the light on the charger does not turn on, check that the outlet works by plugging in another device.

Look at the charging contacts on the vacuum and the charger—they should be clean and shiny. If they are black or corroded, wipe them gently with a dry cloth or a cotton swab. Debris or dust on the contacts prevents charging. If the vacuum still will not charge after cleaning the contacts and waiting 3 hours, the battery or charger may have failed and will need replacement through Dyson.

Inspect the motor and brush bar motor

If the vacuum turns on but produces no suction, and you have already cleaned the filter and cleared blockages, the problem is still usually not the main motor. Check the brush bar motor separately—on most Dyson models, the brush bar has its own small motor. If the brush bar does not spin when you turn on the vacuum, that motor may have failed.

Listen for grinding or squealing sounds when the vacuum runs. A grinding noise usually means debris is caught inside, while a squealing sound suggests the motor bearings are wearing out. If you hear either, stop using the vacuum and contact Dyson or a repair shop. Running a damaged motor can make the problem worse.

When to contact Dyson support or a repair shop

Call Dyson support or visit their website if the motor does not turn on at all, the battery will not hold a charge after a full cycle, or you hear grinding or squealing from inside the motor housing. Dyson offers phone support and can walk you through troubleshooting, and they sell replacement parts directly. Many models are still under warranty for one to five years depending on when you bought it.

If your Dyson is out of warranty and the repair cost is high, a local appliance repair shop may be cheaper than buying a new unit. Ask for a quote before authorizing the repair. Some shops can replace motors, batteries, or brush bars for $100 to $200, which may be worth it if the vacuum is less than five years old.

Maintain your Dyson to avoid future problems

Empty the dust bin after every use. Clean the filter once a month by tapping it and rinsing it under cool water, and replace it every 12 months. Check the hose and brush bar for blockages every three months, especially if you have pets. These straightforward steps will keep your Dyson running at full power and prevent most repairs.

Store the vacuum in a dry place and keep the charger (on cordless models) plugged in when not in use. Batteries last longer when they are kept charged. If you will not use the vacuum for more than a month, charge it fully before storing it.

Frequently Asked Questions

Why does my Dyson have weak suction even after I emptied the bin?

The filter is almost certainly clogged. Tap it over a trash can and rinse it under cool running water, then let it dry for 24 hours. If that does not work, the filter is too old and needs replacement. A clogged filter cuts suction by 50 percent or more.

Can I wash the Dyson filter in the dishwasher?

No. Use only cool running water and let it air-dry completely before reinstalling. Hot water and dishwasher detergent damage the filter material and can void your warranty. Tap the filter gently over a trash can first to remove loose dust.

My Dyson motor runs but the brush bar does not spin. What is wrong?

Hair is probably wrapped around the brush bar or its end caps. Flip the vacuum over, use scissors to cut away the hair, and spin the bar by hand to check it moves freely. If the bar still does not spin after you remove the hair, the brush bar motor has failed and needs replacement.

How long does a Dyson battery last before it needs replacement?

Most Dyson batteries hold a full charge for three to seven years of regular use, depending on how often you charge and use the vacuum. If the battery drains much faster than it used to, or will not charge at all, it needs replacement. Dyson batteries cost $100 to $200.

Is it worth repairing a Dyson, or should I buy a new one?

If the repair costs less than half the price of a new Dyson, repair is usually worth it. A motor or battery replacement may cost $150 to $300, while a new Dyson costs $300 to $750. If the vacuum is more than seven years old, a new one may be the better choice.