Is my replacement humidifier filter working?

Thursday, March 11, 2010 by Aprilaire Team
Consumer question submitted to Aprilaire:

I recently installed the humidifer and it worked fine for a few days.  Now it is leaking water out the bottom and not through the drain hole.  Could the filter be defective?

Aprilaires' response:

Thank you for contacting Aprilaire. Humidifiers can leak for several common reasons,

1) Is the unit level?
2) Inspect the feed tube for cracks.
3) Is the water panel in upside down?
4) Is the scale control insert cracked?
5) Does the drain line plugged or restricted?
6) Erosion of the water panel do to reverse osmosis (RO) or deionized (DI) water.
7) Heat registers in the house that are closed?

Closing heat registers can cause high pressure in your ducts which can blow water off of the water panel. If the static pressure in the duct  is more than .4" of W.C. water will be sprayed off of the water panel.

I hope this helps. If you still can't stop the unit from leaking you will need to contact your local HVAC contractor or you can call our technical support department for more trouble shooting assistance. You can reach us at 1-800-334-6011 Monday - Friday from 7:00 AM to 5:00 PM central time.


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