The first thing you may like to know about flush mount ceiling fans is that they are also referred to as hugger fans and low profile fans. It all means the same thing, and that is a fan that's mounted directly to the ceiling without a down-rod.
So then why would you choose this type of fan? For many people it's simple a matter of necessity. They just don't have tall enough ceilings and a down rod would place a fan too close to the people occupying room space.
Even so, there is another common reason that you may want to choose this type of higher fan. For instance, some larger fans simply are too tall. Even without a down-rod. You see even in a nine foot room, some larger fans may dip too low.
Still yet, another reason is good old fashioned aesthetics. Some people simply prefer the way that a flush mount ceiling fan looks in a rooms overall decor. Remember that there are really no set rules to how you position a fan.
However; one thing that you do want to bear in mind is that in a room with eight foot ceilings, even a flush mount ceiling fan can present a hazard. This is particularly the case with taller people and in bedrooms where people will be changing clothes.
Even so, one last thing that you may want to consider is that if you're considering installing budget fans, flush mount ceiling fans tend to be less susceptible to wobbling problems. Even when the blades are slightly out of balance.