Noting the posts about humidity and temperature and their effects on
instruments, our church's 30-something-rank pipe organ is completely
under expression, so we have the volume shutters set to close on
shut-down in the winter, and to open on shut down the rest of the time.

This way, when it is cold, we can heat just the pipe chambers and keep
them at 70 F.  In the summer, when it gets really hot here, the chambers
are open to the sanctuary, so the chambers stay somewhat cooler than if
they weren't.  Someday maybe we can air condition the chambers, but
for now this is economical for the church.

David Dewey