I had to replace my self propelled wind tunnel recently. After a conversation at the store, I bought a different brand. Long story short, I was sick. It did not do the job of my Hoover. So, after weeks of debating what to do, I ordered the WindTunnel 3 HP. It arrived pretty quickly, assembled easily and I was back in business! The power of this machine is exactly what I wanted. Oh...I no longer have indoor pets, yet still enjoying features of my vacuum. My parents invested in a Hoover when they were married in the early 1940's. My sister still has that one and it works!