Why store your coat in a climate-controlled vault
Fur is susceptible to fluctuations in temperature and humidity. When it is humid the fur and skin load up with moisture, then dries out when the humidity drops. Repeated exposure to the cycle causes the skins to get brittle and shortens the life of the garment. A proper vault keeps the garments at the optimum temperature and humidity. Check the vault you intend to store your fur in. It should be cool and clammy. And dark.
Give your fur a summer vacation from the heat and a cool place for it to hang out. (Yes, pun intended)