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.
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.
Customer satisfaction score
Average test score
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.
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.
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.
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.
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.
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.
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.
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.
Know which vacuum cleaner brand you want? Use the links to go straight to our reviews and find your ideal model: