All,

We are working on an energy model of a high-rise multi-family building in
the New Jersey climate zone. This project will be using high efficiency
in-unit electric water heaters (0.95 EF) for DHW requirements.

As per the latest code (ASHRAE 90.1-2013 Appendix G), baseline DHW system
for a multi-family building has to be a gas storage water heater. As I
understand, there will be a significant energy cost penalty for using
electric fuel versus natural gas in the design for DHW.

Has anyone encountered similar situation?

Thanks,

*Sunayana Jain CEM, LEED AP BD+CSustainable Buildings & Operations Project
Manager *

*Sustainable Solutions Corporation*