Equitable, Data Driven, Domestic Hot Water Decarbonization

While electrification of domestic hot water is picking up steam, outdated sizing guidelines result in oversized, expensive, and inefficient systems, especially in affordable multifamily housing. New Ecology’s data, from over 20 affordable multifamily housing sites, reveals differences between the measured loads and traditional sizing guidelines, presenting opportunities for higher system efficiency, reduced operating costs, and lower first costs as these buildings move to electrify their domestic hot water.

Session Speaker(s): 

Session Chair(s): 

Event Time: 

Tuesday, March 19, 2024 - 10:30am to 12:00pm

Room / Location:
Marina 1

CEU Information: 

AIA: 1.5 LU
BOC: 1.5 credit hours
MA CSL: 1.5 credit hours (Energy)
NAHB: 1.5 credit hours
NARI: 1.5 credit hours
PHI: Credit offered for full conference attendance
Phius: Credit offered for each full conference day
RESNET: Credit offered for each full conference day

Learning Objectives:

  • Describe the impact of over-sizing on operational efficiency and costs.
  • Explore the discrepancies between common sizing tools and real measured data.
  • Discern when monitoring DHW loads will make sense ahead of system selection and sizing.
  • Summarize differences in selection and sizing decisions between existing condensing gas equipment and central heat pump DHW systems.

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