Mechanical ventilation (e.g., in lecture halls and laboratories) is particularly energy- and cost-intensive. The air not only needs to be heated or cooled but also requires significant effort (with the help of pumps) to be circulated. Therefore, only use ventilation systems when absolutely necessary. Reducing ventilation runtimes not only saves on heating and cooling but also results in electricity savings.
In normally heated rooms (e.g., offices), intermittent ventilation is more efficient and energy-saving than leaving windows slightly open. In this case, windows should be fully opened 2-3 times a day for 4-10 minutes.
When ventilating, always turn down the thermostat controls! Otherwise, you are essentially heating the outdoors through the open window.
Proper ventilation is crucial as it supports health and concentration.
