Hello, yes it's another Appendix G Baseline question.

Typical Residential Tower system with water-cooled heat pumps for the
dwelling units. Tower Loop is closed system with a heat injection boiler
for the winters (northeast climate). Heat injection boiler is natural
gas fired.

Is the Baseline "Electric and Other"? or "Fossil/Electric Hybrid"

I have seen many postings about WSHP being modeled as "all electric"
heating, but I am getting push back on this in the office because of the
heat injection component. Any CIRs on this one? System is obviously very
common.

Thanks

Alan Jackson, LEED AP