I think many people were wondering what was the difference between Hoover Windtunnel 2 and 3 just like me. Because Hoover do not provide any comparison information on their website. However, if you read their product description carefully, you will find something is different between these 2 Windtunnel technology.
“WindTunnel® 2 Technology creates two channels of suction to lift and remove surface debris and deep down embedded dirt.”
“WindTunnel® 3 Technology creates three channels of suction to lift and remove surface debris and deep down embedded dirt.”
So, you can see that the difference is the amounts of channels of suction they generate, WindTunnel® 3 creates one more channel of suction.
Is the WindTunnel® 3 better than the Windtunnel 2? Who knows. Maybe you can contact Hoover to get more details, here is the link to contact them https://hoover.com/contact/, you can leave a text message there or call them.