Why isn't the mist warm?
It may take 10-15 minutes before warm humidity is created. The mist may not feel warm due to the fact it is so fine and is cooled rather quickly from the air in your home. Test by either feeling the base of the unit which should be warm to the touch or by allowing the unit to run for approximately 30 minutes on warm setting in a closed 200 sq. foot room or smaller. The room should feel moderately warmer after 10-15 minutes.