Everyone has their own preferences when it comes to what indoor humidity level is most comfortable. In general, a relative humidity level between 35 to 50 percent is ideal for comfort and to prevent microorganism growth.
The best tools to keeping relative humidity at ideal levels in your home year-round are whole-home humidifiers and dehumidifiers. These systems automatically work with your home’s heating and cooling systems to add or remove moisture from the air. Utilize a humidifier in winter months when air is naturally drier, and a dehumidifier in the summer when air naturally carries more moisture.