What is a safe maximum temperature for an unused part of the house?
I have a house that I leave at 99 degrees for most of the summer.

Candles, chocolate, and candies all melted to some degree.

The house itself seems fine. I don't see any issues with wooden furniture splitting or sheetrock crumbling. The TV and DVDs still works as do battery powered items.

I am at 99 degrees because that is as high as my thermostat will go. I enter the house on occasion and I wanted it to be tolerable, otherwise I would have just turned the A/C off.

I'm in Phoenix so we don't have humidity or mold issues.