We moved an Autopiano made in 1919 from Maryland (high humidity) to
San Diego (moderate humidity, seasonal) and then four years later to
central Utah (extremely dry summers) where it was stored in a storage
unit with no heat or cooling from June to the following March.  No
problems with the piano itself.

I am working on recovering the pneumatics and replacing the tubing,
a project that began in Maryland 20 years ago, so I don't know if the
player mechanism suffered from its travels.

Richard Griffiths