Efficient electric hot water heating technologies significantly reduce the carbon emissions of multifamily buildings, according to a report by the American Council for an Energy-Efficient Economy (ACEEE) and New Buildings Institute (NBI).
In multifamily buildings with five or more units, water heating uses more energy than space heating, cooling, or lighting, the report says. Converting gas-fired water heaters to advanced technology—electric heat pump water heaters (HPWHs)—would cut greenhouse gas emissions from water heating by an average of 58%.
If HPWHs are powered entirely by clean sources, they cause zero emissions, making them a critical tool for decarbonizing the economy. Efficient electric water heaters carry a higher upfront cost over gas models, so policymakers would have to provide incentives to owners to make the conversion, the report says.
“Many utilities offer incentives for building or unit owners to install in-unit heat pump hot water heaters,” an ACEEE/NBI news release says. “Yet few programs are designed specifically for multifamily buildings, which offer unique challenges.”
Related Stories
Codes and Standards | Mar 4, 2020
American Concrete Institute and Precast/Prestressed Concrete Institute expand partnership
Will collaborate on new code requirements.
Codes and Standards | Mar 3, 2020
Wallcoverings industry releases product scorecards concerning sustainability
Tool adds more transparency to certification.
Codes and Standards | Feb 28, 2020
Bay Area communities struggle with what to do about rising sea level
Policies include sea walls, levies, and relocation.
Codes and Standards | Feb 27, 2020
Cell phones present a safety hazard at job sites
Use of ear buds, headphones banned by some contractors.
Codes and Standards | Feb 26, 2020
American Concrete Institute releases 2020 codes, specifications, and practices
ACI Collection features guidance on structural concrete construction and rehabilitation.
Codes and Standards | Feb 25, 2020
New ISO standard for optimizing building use and reusing and recycling components released
Aim is to realize full potential value of a building throughout its life cycle.
Codes and Standards | Feb 21, 2020
Architects push back on proposed uniform design mandate for federal architecture
AIA speaks out against measure.
Codes and Standards | Feb 20, 2020
City-owned buildings to go carbon-free in Los Angeles
Mayor commits to goal for new and extensively renovated structures.
Codes and Standards | Feb 19, 2020
Public is willing to volunteer to maintain green infrastructure
Perceived benefits make residents willing to help public works departments.
Codes and Standards | Feb 18, 2020
Recent Dept. of Energy grants emphasize grid-interactive building technology
National labs, universities, businesses selected for total of $74 million in funding.
