A:Answer Hydrow recommends it be in a dry, indoor, climate-controlled area away from damp or weathering elements. When operating, Hydrow should be used in a room of 32°F to 104°F (0°C to 40°C). It can be can be safely stored in an area of -4°F to 140°F (-20°C to 60°C). The Hydrow website answers many FAQ their Customer Service is outstanding.