An optimum range exists for room air humidity, as air that is too dry or too moist can have negative consequences for comfort and health. Humidifying of room air to maintain the required room air conditioning is indispensable in hospitals.

It is important to observe the required safety regulations with regard to specified maintenance of clean air quality in this respect. Air quality can also seriously impair the wellbeing and health of personnel and patients. Possible effects are tiredness, poor concentration, headaches, burning eyes and irritation of the respiratory tract. Bacteria in the air can penetrate dried mucus and cause inflammation.

Electrical and electronic equipment in operating theatres can react sensitively (i.e. there is a risk of electric shock). This should also be considered in association with flammable narcotic gases. Air humidity in maternity and infant wards is of decisive importance, as infants react extremely sensitively to dry air. Installation of a humidifying system in hospitals should therefore be included in the planning phase and realised as speedily as possible.

Recommended air humidity values in hospitals