Bests & Worsts Reviews from Amazon

Loved this "silent" fan for the first 35 days, but on the 36th day I was awoken by a terrible "high pitched" whir that fades in and out every 30 seconds or so. I am nervous about calling customer support from Dyson after reading some other horror stories on here, but if I get a successful resolution, I will update this review. Either way, this should not be the outcome for a $500 fan! Be warned...