How heat sensitive are LCD's

ok apparently you guys are not listening… I don’t have an option as to where it can go in the room, nor is that what I am asking.

Room layout, the ONLY logical location is over the fireplace, period. Projector or LCD, it is going to be in the same spot. I just do not know if heat from the fireplace would cause premature failure of the TV.

Additionally, for all you guys know the fireplace is only 2 feet high (this is not the case), but I just love how everyone starts speculating on random things, and does not answer the question at hand.