Storage in Florida !

I live in Florida and went a bit overboard this holiday season. So have many unopened boxes. I had a mini split installed in my garage and store most of it in there. Issue is i just noticed last night that despite no visible moisture or leaks coming from the unit itself. The attached images occurred. Mind you these were the pieces stored directly under the unit itself which is about 8 feet off the floor mounted on the wall. Yes obvious answer move them , but limited space due to where i...