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
| Jan 4, 2013
Manchester, England building achieves highest BREEAM rating in U.K.
One Angel Square in Manchester, England, is the highest scoring outstanding building for the Building Research Establishment Environmental Assessment Method (BREEAM) in the U.K.
| Dec 27, 2012
Pentagon eases leasing standards established in 9/11 aftermath
The Pentagon has eliminated the stringent real estate leasing standards it put into place following the Sept. 11, 2001, terrorist attacks, reverting back to a version widely used by federal civilian agencies.
| Dec 27, 2012
Google provides USGBC with $3 million grant to transform building materials industry and indoor health
Google has contributed a $3 million grant to the U.S. Green Building Council (USGBC) to help transform the building materials industry and accelerate the creation of healthier indoor environments.
| Dec 27, 2012
Former industrial French city reshapes itself according to ambitious green standards
Nantes has a strong commitment to address challenges such as urban sprawl and carbon dioxide emissions.
| Dec 27, 2012
New York City law tracking building energy use yields surprises
A legally mandated report that tracks the energy use of New York City's largest buildings provides details about which buildings are achieving higher-than-expected energy efficiency, such as the Chrysler and Empire State buildings, as well as those that are performing poorly.
| Dec 27, 2012
New Jersey considers green roof mandate for state buildings
The New Jersey legislature is considering a bill that would require installation of green or blue roofs on state buildings that are at least 15,000 sf.
| Dec 20, 2012
AIA’s Healthier Communities Through Design showcases local policy initiatives
The American Institute of Architects released Local Leaders: Healthier Communities Through Design, a report that demonstrates the power of architecture to improve public health with policies that promote active living, accessibility, transit options, and better indoor air quality.
| Dec 20, 2012
China to build sustainable city for 180,000 from scratch
A 120-million sf urban development in China will be designed according to high green standards for about 180,000 residents.
| Dec 20, 2012
Air duct trade group urges maintenance, restoration professionals to avoid chemical cleaners
The National Air Duct Cleaners Association (NADCA) urges professionals to avoid using chemicals as a method for cleaning and maintaining air duct systems.
