It looks like about 15% of SFA units have a shared water heater in a water heater location of "conditioned mechanical room", and that the impacts of a HPWH are not felt by any HVAC system.
I spoke to @jmaguire1 about what this reflects in reality. In a large apartment complex, this may be a good reflection of the thermodynamics, but in SFA setup he thinks these water heaters are likely actually in basements (like every 3rd basement or something).
We should think about how we want to better represent shared water heating in SFA, especially when it comes to interactive effects from technologies like HPWH.
It looks like about 15% of SFA units have a shared water heater in a water heater location of "conditioned mechanical room", and that the impacts of a HPWH are not felt by any HVAC system.
I spoke to @jmaguire1 about what this reflects in reality. In a large apartment complex, this may be a good reflection of the thermodynamics, but in SFA setup he thinks these water heaters are likely actually in basements (like every 3rd basement or something).
We should think about how we want to better represent shared water heating in SFA, especially when it comes to interactive effects from technologies like HPWH.