TFA 30.3045.It

Simultaneously checks both the indoor and outdoor climate and provides a recommendation on whether opening or closing the windows would currently improve the indoor climate. Excessively humid indoor air can harm health and promote the growth of mold and dangerous mildew. However, air that is too dry can also affect our well-being and health. Skin, mucous membranes, and respiratory organs are strained, and pets, plants, wooden floors, and furniture suffer as well.

By monitoring temperature and humidity and actively ventilating, you can achieve a comfortable and healthy living environment. If the indoor air is too humid, ventilating in winter, when it is cold, wet, and also humid outside, may initially seem pointless. However, cold air can hold very little or no moisture. Once this air enters the home, it gets warmed up. And now, the air can absorb a multiple of water vapor.