Should a humidifier be placed high or low?

When you talk about the height at which your humidifier is going to be placed, the level over the sun is the most recommended height. So, if you use an evaporation humidifier or an ultrasonic humidifier, if you want to put each of them over the level of the sun.The most recommended height for a humidifier is the above ground level. If you are using an Ultrasonic or Evaporative Humidifier, you want to place them above the ground.