What to Know About Humidity
The optimal indoor humidity level is between 30-50%. This means that the air holds between 30-50% of the maximum amount of moisture it can contain. When the humidity level is too high, it can create a number of problems, including mould and mildew growth, and musty odours, which should be addressed immediately. When high humidity is not addressed, the problems in your home can worsen with warping and damage to wood flooring and furniture, and other wood-based items. In addition, peeling paint and wallpaper, as well as the condensation on windows, can lead to water damage and rot.
On the other hand, very low humidity levels can have particularly damaging effects on health and comfort. Dry air can cause the skin to become dry and itchy and increase the chance of dust mites, increasing the risk of respiratory infections and exacerbating existing respiratory problems, such as asthma and allergies. Low humidity can also cause increased static electricity, making it more likely for hair and clothing to become static and for electrical shocks to occur.
Here are some ways to know if your home is too humid without using a hydrometer:
The Ice cube Method