On Jul 23, 3:56*pm, "Bob-tx" wrote:
I was shopping for a ceiling fan at a light store (not a big box no
nothing store), and was told by the salesman that a three bladed fan
pushed more air than a four or five bladed fan. *Didn't make sense
to me so I asked why that was and was told he didn't know why, but
that is the way it is. *I asked if a two bladed fan pushed even more
air, but he didn't know and of course didn't have any. *I bit my
tongue and didn't ask about a one bladed fan.

I didn't buy anything yet.

Is it true that a three bladed fan pushed more air than a four or
five bladed fan, and if so, WHY???

I sure would appreciate any info you guys in the know can offer.

Bob-tx

He was right, especially at higher speeds. But at extremely low
speeds the 4 or 5 blade might be better because the tubulence has more
time to infill again. It all has to do with turbulence. Planes have
2 blade props, can blow you over, but need to run high speed. If you
look at the big industrial ceiling fans they install in gyms,
factories and big box stores, they are all 3 blades and have a large
diameter.