How does a humidifier work?

Answer: Removing the particules in the air and absorb the moisture. Drain to the pump and then send all liquid to any drain.

Answer: It is placed in the supply air plenum while it adds moisture to the air.

Answer: It has a wet section and a bypass damper as the supply air goes through the wet section it picks up moister which the humidity go up in the air and it get pulled back in the return.

Answer: It absorbs moisture from the air, and uses it in places with low humidity.

Answer: Some are nothing more then a basin of water in the heat airflow of the furnace. Some take a drop of water and try to vaporize it into the air

Answer: adds moisture to the air you breathe.

Answer: removes moisture from air