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Home & garden.

8 July 2021

Which cordless vacuum brand to buy in 2021

Our unique survey data reveals which brands, including Bosch, Dyson, Gtech and Shark, develop the fewest faults and which ones make their owners happiest.
Joseph Perry
Cordless vacuum cleaner

Faulty batteries, blocked filters and brushes not working properly or at all are the most common cordless vacuum cleaner problems, according to our survey of 5,586 cordless vacuum cleaner owners in the UK.

Knowing which brands develop the most faults and how long a model can be expected to last is vital when you're buying a cordless vacuum cleaner. That's why each year we ask thousands of Which? members to tell us whether they're pleased with their cordless vac, or if they've experienced problems.

Our unique customer survey takes into account the frequency of faults reported for each brand, the severity of these faults and how soon after buying they occur.

We've got data on the biggest cordless vacuum cleaner brands – AEG, Black & Decker, Bosch, Dyson, Gtech, Shark, Tineco and Vax – so we can tell you which brand to choose, and which brands to avoid. 

Cordless vacuum cleaner brands rated

The table below summarises this year’s results. Brands are ranked by their customer satisfaction score, which relates to whether customers would recommend the brand to a friend.

Only logged-in Which? members can view which brands members are most satisfied with in the table below. If you're not yet a member, join Which? to get instant access.

BrandCustomer satisfaction scoreSatisfaction Rating% faultyAverage test score

  • Table notes: Results are based on a survey of 5,586 Which? members who own cordless vacuum cleaners conducted in September 2020. Table last updated 8 December 2020.
  • Customer satisfaction is based on brand satisfaction and whether Which? members would recommend the brand to a friend.
  • Percentage faulty is based on the number of vacuums that had to be replaced due to a fault.
  • Average test score is based on results of models tested under our latest test programme and available to buy as of December 2020.

Best vs worst cordless vacuum cleaner brands

As the chart below reveals, there is a big difference between the brand with the highest (81%) and lowest (62%) customer satisfaction scores. 

There are also big gaps between average test scores and the percentage of faulty vacuums per brand. 

How long will my cordless vacuum cleaner last?

Because most cordless vacuums are relatively new, we don't have enough data to know how long each brand lasts. 

But based on what Which? members have told us about their cordless vacs, we can predict how long three of the most popular brands are likely to last.

Which? members can log in to view which vacuum cleaner brands are included in the table below. If you're not yet a member, join Which? to get instant access.

Verdict: top cordless vacuum cleaner brands in-depth

We've pulled together our survey data and independent test results – with some insight from our vacuum cleaner experts too – to give you an in-depth look at each brand. Read on to find out which brands are worth buying.

Which? members can log in to view our unique lab test scores and customer satisfaction survey results. If you're not yet a member, join Which? to get instant access to the following vacuum cleaner brand verdicts:

  • AEG cordless vacuum cleaners verdict
  • Black & Decker cordless vacuum cleaners verdict
  • Bosch cordless vacuum cleaners verdict
  • Dyson cordless vacuum cleaners verdict
  • Gtech cordless vacuum cleaners verdict
  • Shark cordless vacuum cleaners verdict
  • Tineco cordless vacuum cleaners verdict
  • Vax cordless vacuum cleaners verdict
Cordless vacuum cleaner dust container being emptied

The three most common cordless vacuum cleaner faults

Cordless vacuum cleaners are less reliable than their corded cousins, but you don't always need to buy a new one if your cordless vac develops a fault. In fact, the three most common faults can be simple to fix.

1. Faulty battery or battery not lasting as long as it used to (33%) 

Battery problems account for a third of all faults reported by cordless vac owners in our Which? member survey. Before buying a new vac, it's worth checkingwhether the battery can be replaced – spare batteries can buy you more cleaning time too, although they often cost £50 or more, so they can be an expensive extra.

2. Brush not working properly, or not working at all (10%)

If the brush bar is clear of hair and debris that could otherwise clog it up, the most likely cause of this fault is a broken vacuum cleaner belt. These elastic belts are cheap to buy and relatively easy to fit yourself in most cases.

3. Blocked filters (10%)

Fortunately this is one of the easiest faults to fix: simply clean the filter. It can be fiddly and unhygienic, but regularly cleaning the filter will keep your cordless vac working for longer.

See our guide to maintaining your vacuum cleaner for step-by-step advice on how to look after your cordless vac.

How we calculate the best and worst cordless vacuum cleaner brands

Which? has a wealth of information on Britain's favourite cordless vacuum cleaner brands. Every year, we ask Which? members to tell us about the domestic appliances they own – from how likely they'd be to recommend a brand, to how long a product lasted once they got it home. 

This year, more than 13,000 members told us about more than 40,000 products, including 5,586 cordless vacs.

Our survey, combined with our independent testing data, means we can give you unique insight into which cordless vacuum cleaner brand you should choose.

Head to our cordless vacuum cleaner reviews

Know which vacuum cleaner brand you want? Use the links to go straight to our reviews and find your ideal model: