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
| Oct 25, 2012
Nashville providing incentives for green roofs
The city of Nashville, Tenn., is promoting the installation of green roofs through a measure providing a $10 reduction in a property's sewer fees for every square foot of vegetative roof.
| Oct 25, 2012
Net Zero buildings will use operating systems like computers to save energy
As buildings become more efficient and begin to use distributed electricity generation, they will need to become “smarter,” using operating systems much as a computer does.
| Oct 18, 2012
Princeton, N.J. residents upset over proposal to exempt colleges from land use laws
Princeton, N.J. residents criticized proposed legislation that would exempt private colleges and universities from following local land use laws for construction projects.
| Oct 18, 2012
Utah contracting firm challenges state immigration law
Universal Contracting LLC of American Fork, Utah, has filed suit challenging the constitutionality of Utah’s 2011 immigration law.
| Oct 18, 2012
More than 65,000 construction, design jobs may be cut if sequestration takes place
About $2 billion worth of construction and design projects would be eliminated if scheduled federal budget cuts, referred to as sequestration, take effect on Jan. 2, 2013.
| Oct 18, 2012
OSHA investigating parking garage collapse that kills four at Doral, Fla. college
OSHA is investigating the collapse of a five-story concrete parking garage under construction at Miami Dade College West Campus in Doral, Fla. that killed four workers and injured several others.
| Oct 18, 2012
EPA commercial building lead paint rule pushed back to 2015
The U.S. Environmental Protection Agency's inclusion of commercial buildings in a residential lead paint rule is being delayed until 2015.
| Oct 18, 2012
Chicago pushing green roofs to reduce heat island effect
The city of Chicago has mandated that all new buildings that require any public funds must be LEED certified, usually with a green roof.
