what is the ideal humidity in a house

According to multiple sources, the ideal humidity level in a house should be between 30% and 60% . However, the exact level within this range that is most comfortable will depend on the individual and their family, the time of year, and the outdoor humidity level. To discourage the growth and spread of mold, humidity levels should be kept below 50% . Signs of poor indoor humidity include difficulty breathing, excessive sweating, and damage to wooden objects in the home. It is recommended to use a hydrometer to measure the humidity level in the home and adjust accordingly.