By simply changing just two particular elements, a humidity chamber can be utilised to artificially simulate a variety of ambient conditions. relative humidity as well as temperature. To ascertain the fundamental shelf-life of the aforementioned pharmaceuticals as well as their resistance to environmental changes, a humidity chamber is thus extensively utilised in the testing of drugs & medicines in the pharmaceutical sector. In accordance with the particular testing parameter, the humidity chamber can be divided into environmental chambers, temperature-humidity chambers, accelerated test chambers, and photo stability chambers and cold chambers.

They can be physically divided into walk-in chambers, which can be entered by walking, and reach-in chambers, which are smaller in size. Compressors are used in humidity chambers to maintain the chamber's temperature and, in turn, the humidity levels. A humidity chamber operates by employing compressors to maintain the chamber's temperature and, consequently, the relative humidity. It also achieves this by using a separate water reserve heated by a boiler.