How do I change my replacement humidifier filter?

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

It is time to change the pad on my model 400 which I purchased in November 2009. I followed the instructions on the replacement pad box and from the owner’s manual on your web site. Both instruct in step 4 to tip the Water Panel evaporation assembly forward and lift it out of the humidifier.  I tried to do this but the assembly appears to be attached at the top on both sides to the housing and I can not see or figure out how you remove it to get the assembly to tip forward.

Would you please instruct me on how to do so?

Aprilaires' response:

The internal components of the model 400 will require that they be removed from the humidifier in order to replace the water panel successfully. To remove the internal case from the base of the humidifier, you will need to pull it out from the top where the distribution tray is located. When pulling the internal case from the top you will need to tilt it towards you to remove the components. Once the internal parts are removed the water panel can be replaced at that time by removing the tray on top. After removing the distribution tray from the "U" shaped frame, pull out the used water panel and place the new water panel in the "U" shaped holder. We have also included the owners manual that references the proper process for replacing the water panel for the model 400 humidifier.

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