Why are the evaporator coils freezing up?
A well running dehumidifier will have really cold evaporator coils on the back of the machine. When moist air is drawn across these coils, the moisture condenses. Occasionally, the air over the coils is too cold, and the condensing water can freeze. Turn off the unit for a little while and let everything thaw out. Some temporary frosting can occur during the first 10 to 15 minutes of operation. If frost or ice remains, the room temperature may be too low for your model. Many non-basement models can not operate below 65 F. They become too efficient and cause the evaporator to freeze up. Some basement models operate well down to 38 F by using a de-icing mechanism.
