I've experienced no undue vibration with my new Air-X, nor noise. Be sure it is mounted so that the support poles are aligned with the main pole and all the mountings are tight. Also that the blades aren't over or under torqued, as well as the hub is tight. On my installation
, I mounted the main pole directly to the deck
, rather than with the bracket (one hole instead of four). I get more vibration and noise from my bimini
strap (cured with tape) than from my Air-X.