Which side of my HVAC equipment should my Aprilaire Humidifier be installed?

Monday, June 20, 2011 by Aprilaire Team
Consumer question:

I recently had a humidifier installed.  The humidifier was installed on the return side of the HVAC duct.  I was told by another HVAC company that the humidifier was installed in the wrong location and should have been on the other side of the heating coil in the supply ducts.  Is there a specific location for installation?  Can you clear this up for me please? 


Aprilaires' response:

Thank you for contacting us about your humidifier. Any of our humidifiers can be installed on EITHER side of the hvac system. The only statement we make is the if the unit is a model 700 and is installed on the cold air side, it MUST be connected with hot water. Otherwise, Any other humidifier install can be connected to hot or cold water and/or on the cold air side or the heating coil side.

Please let us know if you have any questions.

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