Hi,

I am working on a 6-floor residential building with two non-residential floors. For proposed case, the building uses two water heaters, one is a heat pump, connected to a geothermal loop and another electric. Since ASHRAE 90.1 2016, table G3.1.1.1-2 categorizes the baseline heating method based on building type, are we supposed to use two domestic water heating loops, one for Dormitory and one for Office? I am using section G3.1.1 exception b for HVAC systems.

Thanks in advance,

Pramod