I have 5 EMs in my garage in Washington state. Granted, it is finished with sheetrock walls, the ceiling above it is insulated, and we don't have temperature extremes here much (but lots of rain and humidity), but I've had no issues. I do play them every single day, and I take constant care of them, so I know that helps. If I ever move back to Texas I am not sure what I'll do but may have to still keep them in a garage and just continue to do my best to play/maintain them daily.