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When to replace a vacuum – 6 signs appliance experts always look out for

From excessive noise to a loss of suction, sometimes it's cheaper to replace your vacuum than repair it

apartment living space with hardwood floor, herringbone layout, modern armchairs and couch, rug, coffee table, mirrors, Parador
(Image credit: Parador)

Your vacuum is essential when it comes to keeping your home clean and dust-free, but how do you know when it's time for an upgrade?

Like all appliances, their efficiency diminishes over time, and you may start to notice signs such as a loss of suction, overheating, and even ominous odors, all of which indicate that your machine is coming to the end of its life.

When to replace a vacuum

Whether you use one of the best handheld vacuums, upright vacuums, or one specifically for pet hair, there is nothing more frustrating than a vacuum that doesn't lift all debris and dander, or that's even counterproductive to your cleaning. Therefore, it's important to keep an eye out for the signs that suggest you've got the most from your vacuum cleaner, and would be better off investing in a new model.

1. Age and frequency of use

A blue and white vacuum cleaner on a cream living room rud, beside a cream couch and a small yellow side table

(Image credit: Getty Images)

David Miloshev, appliance technician at Fantastic Services, explains that the average lifespan of a medium-range vacuum is usually between six to eight years, depending on the brand and how often you vacuum.

He says, 'After four years of using the same appliance, you may be able to repair it and replace some parts, but if you experience some major faults, such as a broken switch or a burnt-out motor, it’ll be easier to switch to a new vacuum cleaner.'

Proper care and maintenance can extend the lifespan of a vacuum cleaner, including regularly cleaning it to keep it in good working order. However, if your vacuum is nearing or has exceeded its expected lifespan – particularly if you notice performance issues – it may be time to consider replacing it.

2. Overheating

Funny tabby cat playing with a robot vacuum cleaner, with kitchen chairs in blurred background

(Image credit: Getty Images)

Another common issue with older vacuum cleaners is overheating, which can damage the motor and other internal components, leading to reduced performance or even breakdowns.

Overheating may result from factors such as a blocked airflow, a faulty motor, or excessive use, and can be a clear sign that it’s time to replace your appliance. If you have fluffy pets that enjoy riding on your Roomba, try keeping them out of the room while it’s operating to prevent any unexpected passengers.

3. Loss of suction

vacuum cleaner on rug

(Image credit: Getty images)

As the main purpose of your vacuum is to suck up dust, debris and dander, if you're wondering why your vacuum cleaner has lost suction power, it's time for a replacement.

This can be caused by a few different factors, such as clogged filters, worn-out belts, or a blocked hose.

'Over time, filters can become clogged with dirt, dust, and debris. This can reduce the airflow and diminish suction power. Regular cleaning or replacement of filters is essential to maintain optimal performance.'

If you're unsure how to clean a vacuum filter, our expert-led guide details how to clean a cartridge, foam, HEPA and robot vacuum filter, for refreshing all machines. Remember, though, that sometimes filters must be replaced, as they are not possible to clean.

The drive belt in a vacuum cleaner is responsible for transferring power from the motor to the cleaning head. As this belt ages, it can stretch, fray, or break, resulting in decreased suction.

A clogged hose can restrict airflow and significantly reduce suction power. Make sure to regularly inspect the hose for any blockages, such as hair, dirt, or small trapped objects.

If you do find any, you can clear a blockage in a canister vacuum with a quarter, a technique engineers at Miele told one of our editors.

4. Strange odors

If you're wondering how to stop your vacuum cleaner from smelling, the solution may be to replace it.

Your vacuum cleaner might be smelling due to underlying issues, such as a buildup of dirt, debris, or even mold inside the vacuum cleaner.

'If this is left unchecked, the odors can become worse and may eventually lead to respiratory issues, he warns, so replace yours immediately if you notice any. You can also use scent tablets to make your home smell fresh while vacuuming, but not as a way to mask odors.

5. Excessive noise

Dyson Ball Animal 2 vacuum cleaner

(Image credit: Dyson)

As explained in our vacuum jargon buster, a well-functioning vacuum cleaner should operate relatively quietly – somewhere between 70 and 90 decibels. Cordless vacuums tend to be quieter, whereas upright models are louder.

If you notice any unusual sounds coming from your vacuum cleaner, such as grinding, high-pitched noises, or screeching, this could indicate some underlying issues.

These noises can be caused by a range of factors, such as a worn-out motor, damaged bearings, or loose components.

6. Difficulty replacing parts

If your vacuum cleaner has become outdated, meaning you can't fix smaller issues by finding new parts to replace broken ones, or you need an upgrade to improve your cleaning efficiency, you should replace your vacuum.

David Miloshev says, 'Older vacuum models will be more challenging to find replacement parts for. If your vacuum is no longer supported by the manufacturer, obtaining spare parts can become difficult or even impossible.

'Advancements in vacuum cleaner technology nowadays happen regularly. Newer models may offer improved features, such as better filtration, enhanced suction power, or energy efficiency and, if your vacuum lacks these features, a replacement will be very beneficial.'

Additionally, more often than not, says Miloshev, if your vacuum is three or four years old, repairs and replacements may rack up costing as much, or even more, than a whole new machine.


Next, learn how often you should vacuum to keep your home free of dust, dirt and allergens, and the mistakes that are reducing the lifespan of your appliances.

Ottilie Blackhall
Sleep Editor

Ottilie joined Homes & Gardens in 2024 as the News Writer on Solved, after finishing a Master's in Magazine Journalism at City, University of London. Now, as the Sleep Editor, she spends her days hunting deals and producing content on all things sleep – from mattresses and sheets to protectors and pillows, all of which she tests in her own home. She also has particular expertise in home fragrance, covering everything from candles to reed diffusers.

Previously, she has written for Livingetc and Motorsport Magazine, and also has a Master's degree in English Literature and History of Art from the University of Edinburgh, where she developed a love for inspiring interiors and architecture.

With contributions from