Heat damage can be the worst for your harp, and on top of that the temperatures that can harm the harp are surprisingly low (120 is what I think I’ve heard. Sure, it never gets that hot outside but you should think twice about leaving your harp in the parked car in the summer). The heat will melt the glue that holds the harp together, completely ruining it. Luckily, I believe that a harp really either gets no damage or it gets completely decimated. That’s lucky because if you can’t see or feel anything immediately wrong, then there’s probably nothing to worry about. Perhaps I’ve got my facts wrong and a more qualified person will step in and correct me, but I know for a fact that glue melting is a serious problem that anyone living in an area with a summer season needs to be weary of.
~Sam