Mold

• Mold develops and grows when the air is too humid and a humidifier can easily add too much moisture into a room. Monitor the machine's output to ensure that the moisture is being absorbed into the air, rather than falling onto the floor, and always keep a door ajar.
  
  

Shock

• Since humidifiers use both electricity to function and water to do the job, electrocution is always a danger. Use caution when dealing with the cord, always keep children away from the machine and never leave children unattended in a room with an operating humidifier.
  
  

Water Damage

• Water damage is possible if the tank is not properly inserted onto the humidifier's base. Spillage may occur during transport of the water tank to the base; use two hands (and not the handle) to carry a filled water tank.
  
  

Burns

• Warm-mist humidifiers present the risk of burns because the humidifier heats water and expels it via steam into a room. Never put a hand over the vapor output slot(s) and always monitor children around a warm-mist humidifier.
  
  

Trips and Falls

• Any appliance with a cord presents the risk of trips and falls and a humidifier---even one with a short cord---is no exception. Always place the cord well out of the way to prevent someone from walking or tripping on the cord.