Collections of objects, archived documents and books are mostly affected by the indoor climate. When controlling indoor air the conservation of objects, building and energy efficiency is taken into account.

Climate change brings a warmer and more humid indoor climate, increasing the risk of mold. Also new pest species thrive in a warmer climate and can cover more annual cycles which may mean that pest attacks are more frequent and more extensive.

Floods can be devastating for collections. It is therefore important not to locate magazine storage site or archive in a flood-threatened area. Similarly, it is inappropriate to place museum objects or archive documents in basements or directly on the floor.