If you are attempting to import the calculated results of Space and Zone Heating and Cooloing Load using gbXML, you are likely to run into a slight problem. The result of which is that the values that are imported are about 9% of what the expected values should be. The reason is due to how CHVAC is writing out the gbXML file; it boils down to an improper specification for the unit
According to the standard published at: http://www.gbxml.org/currentschema.php
Valid values for the load units are: BtuPerHour and Watt.
<xsd:enumeration value="BtuPerHour" />
<xsd:enumeration value="Watt" />
However, in the gbXML file, what you may find is unit="Watts" insetead of unit="Watt"
Using a simple editor, like Notepad, you can do a search and replace for the unit="Watts" to correct the specification to Watt. After doing so, you should get the expected results when importing into Revit.
If you are a user of CHVAC, and this issue is important to you, please contact Elite Software directly.