I tried the AC fans. Very nicely built. Almost exact same built as the Solar & Palau fans. I to, like you, sent my fan back because it was loud as fuck and they advertise it as a "quiet" fan with low db ratings.
Low db ratings my ass. The 8" sounded like a jet engine at full speed and @ half speed was still way too loud for my purposes.
I know the Panasonic are expensive but take my word for it they last 10 plus years and I'm not shitting you. I have bought 20 of these for myself and others and not one has failed yet. They also don't lose their quietness.
BTW, I run mine 24/7 all year round. They NEVER stop. That's $$$ well spent IMO
[/QUOTE. Yes the ac infinity is so load event a little loader than the cheap vivo sun fan, not quite at all when pass half seed, ac infinity should not advertise as quite, there dBa is so misleading Because it was so loud I thought my fan was damage or not working properly when I receive it. How much quieter is the Panasonic compared to the ac infinity?