To demonstrate the suction power of its CordZero vacuum cleaner, LG has sent it sky high. More specifically, the company hired professional rock climber Sierra Blair-Coyle to climb a 140-metre (460-foot), 33-storey skyscraper in South Korea with two of the cordless vacuum cleaners strapped to her back, using the suction to cling onto the building.

There are some caveats. The vacuum cleaners’ nozzles were switched out for suction cup attachments so that they could stick more safely to the walls; and, since the vacuum cleaners have only 40 minutes of cordless power in regular mode, they needed to be swapped out halfway through the climb.

Blair-Coyle completed the climb in under half an hour, which indicates that perhaps the vacuums were running in a higher power mode. Even so, it’s a pretty cool feat.

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Watch a rock climber scale a skyscraper using two vacuum cleaners – CNET