We need humidity for our comfort and health. Instead of guessing whether or not you have a humidity problem inside your house, purchase a small, inexpensive, and easy-to-use instrument called a hygrometer (humidity sensor). Humidity is normally measured as relative humidity (RH). RH is a percentage that indicates the amount of moisture in the air relative to the maximum amount the air can hold at that temperature. You should place it where the humidity symptoms are most obvious, in the room that you are most concerned about, or where your family spends the most time. Don’t place your hygrometer near a radiator, a heat register or a chimney, or in any other location where it could be affected by direct heat. Humidity can be controlled. If the relative humidity in your home is too high, you can reduce it; if it is too low, you can increase it. For more information, click here.