Enertech's NEW Direct Expansion (EAD) Air Handler | Walk-Around Video

As a direct result of our customer's requests, Enertech Global is proud to announce the release of the highly anticipated Direct Expansion (EAD) Air Handler. Join Jim, our Special Projects Manager, as he shares some of the features and benefits of this exciting new product offering!
Learn more at www.enertechus...
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[@gerrygreen3832]

From the description (and diagram) you gave about changing from an upflow to downflow configuration, it looks like the airflow over the A-coil has been reversed (i.e., the air now enters the chamber from the "narrow" end of the A-coil, whereas in the upflow - and sideflow - configurations have it entering from the "wide" end of the A-coil). Were there any experiments done to see if there is any change in either (or both) of the effective airflow rate (CFM), or effective cooling capacity? I'm just curious if the different direction of flow creates any turbulence, etc. affecting either of the two measures that I mentioned.