When you have a whole-house dehumidifier in your home, you will want to know if it is working properly so that you can identify when it needs to be repaired. The humidistat system on your system should keep the humidity at a specific level, but you can test that level with a hygrometer. If the results on the hygrometer are off what the humidistat is set at, it could signal a problem.
Other signs that your dehumidifier is not working properly include the air feeling thick and heavy, moisture buildup inside your home, a musty smell, and swelling or buckling of wood surfaces.