Why does the water run out of the bottom of the humidifier?

Consumer question:

Why does the water run out of the bottom of the humidfier. Just installed a new water panel.Could it be that too much water is going into the unit?

Aprilaires' response:

Thank you for your email regarding your model 700M Aprilaire humidifier. All Aprilaire humidifiers will use water not evaporated, to flush away minerals left behind from the evaporation process. Water draining is normal.


0 thoughts on “Why does the water run out of the bottom of the humidifier?

  1. Kent Richter

    I have a model 568 that has been in this house for about 12 + years. I have no water flow in the unit. I have checked the water supply and I have water coming to the valve, Research Products 09/00 B2015-S51, 125PSI orfice 3/32 24/60 2.3W. With no water flow do I need to replace this or??????

  2. Brett

    Thank you for contacting us with regards to your model 568 Humidifier. The solenoid valve is one of several components that must all work together to allow the water to flow through the unit. Additionally, it needs a working humidistat to make a call for humidity. It needs a working transformer to supply power to the solenoid valve, and, often, it needs some type of relay to connect the humidifier to the operation of the furnace. We don’t want the humidifier running when there’s no air moving through your ducts.
    For further troubleshooting we recommend that you contact your installer or other HVAC service company. They can diagnose the humidifier and provide replacement parts, if needed.
    Please let us know if we can be of further assistance.


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