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The "motor" power has very little to do with the efficiency of a vacuum. The efficiency of a vacuum is measured in AirWatts, a relation between electrical power used, flow and suction. It's a bit like MPG for a car. You could have a vacuum with great flow (aka a fan) and very little suction, or the opposite great suction, low flow. (aka a vacuum pump), that would not help you much. In the same relation, if your vacuum was using 5,000 Watts and generating only 250 Airwatts, it would be a very poor vacuum. Airwatt are measured at the baseplate, and not with all attachments. Manufacturers that do NOT publish their Airwatts have something to hide. ;-) The Airwatt measurement is based on ASTM F558 F17 Just in case you want to know ...
Sorry, there was a problem. Please try again later.Hi there, this is Krystal with Dyson. Thank you for your interest in the Dyson Big Ball Canister. The performance of the machine is measured in air watts. This model has 250 air watts of suction power. Best Wishes, Krystal Dyson Customer Service
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