I have the Kenmore 14 gallon whole house humdifier. The humidity level only goes up to 30 even though I have it set to 45. I changed the filters,cleaned the unit and tried unplugging but it did not make a difference
Dehumidifiers - Kenmore - 14 Gallon Humidifier
Answers & Comments
My suggestion is to get an additional humidifier and run both. It sounds like it is at capacity. This was a cold winter and the additional heating put a large demand on the humidifiers.