A:Answer I've been displaying to the ceiling for 1 week now and
no problems yet but see the limitations below.
The fan openings are on the sides so no problem there.
The back has the 2 speakers, so if you display to the ceiling,
the device's audio is limited.
Also on the back is the VGA connector but that's the only
input on the back.
There is an IR sensor on the back for the remote but there is also
an IR sensor on the front. I've been able to get the remote to
work while the unit is on its back.