What is the ideal humidity level for indoor air in a residential setting?

The ideal humidity level for indoor air in a residential setting is generally considered to be between 30% to 50%. This range balances comfort and health while also helping to maintain the structural integrity of the home and its furnishings.

At this level of humidity, occupants typically feel more comfortable and can avoid issues such as dry skin and respiratory problems associated with overly low humidity. Additionally, maintaining humidity within this range minimizes the risk of mold growth, which can occur in environments with higher humidity levels, and prevents condensation, which can damage walls and furniture.

Humidity levels outside this range could lead to discomfort and potential health issues, which is why maintaining it between 30% and 50% is often recommended in HVAC guidelines for residential settings.