“I see comments from 4-3 years ago. How long ago was the windtunnel 3 introduced and has there been upgrades to the current model. If so, what are the upgrades.”
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Hello Undecided, Some of the improvements and upgrades we have made to this unit over the last few years include the following: -Revised height adjustment settings -Improved carbon brush material -Improved filter communication to reduce loss of suction Thank you and please let us know if you have any other questions! Your Hoover Team
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