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
| Jun 5, 2012
HP Labs aims for net-zero energy data centers
Building sustainable data centers is one of the goals of HP Labs, and it believes technology, combined with the right building techniques, could result in the construction of energy-efficient data centers.
| Jun 5, 2012
USGBC delays LEED 2012; renames it LEED v4
In response to concerns by LEED users, the U.S. Green Building Council (USGBC) announced that it will delay the ballot on LEED 2012 until June 1, 2013.
| Jun 5, 2012
Baltimore officials vow to block $1.8 billion urban renewal project
Baltimore officials want to block a $1.8 billion urban renewal project until more neighborhood residents and minority contractors are hired and displaced residents can benefit from the revitalization.
| Jun 5, 2012
OSHA launches campaign to warn of heat dangers in outdoor work
The Occupational Safety and Health Administration has begun a campaign to warn outdoor workers about the dangers of heat exposure.
| Jun 5, 2012
AGC’s Safety and Health Conference focuses on regulations, legislation
More than 150 industry professionals and other attendees will participate in the Associated General Contractors of America’s (AGC’s) safety and health conference July 11-13 in Washington, D.C.
| Jun 1, 2012
New BD+C University Course on Insulated Metal Panels available
By completing this course, you earn 1.0 HSW/SD AIA Learning Units.
| May 31, 2012
Proposed change in Michigan’s building code would hurt innovation, say critics
Legislation pending before the Michigan Senate would change the law that calls for building codes to be updated every three years to require an update only every six years.
| May 31, 2012
Natural gas industry opposes federal carbon-neutral construction rule
The natural gas industry and some allies are working to block a federal green building rule that was expected to be a national model for carbon-neutral construction.
| May 31, 2012
Lawsuits push the legal boundaries of green building definition
This article explores some legal issues stemming from lawsuits in which plaintiffs have charged developers with not delivering on a promised level of sustainability.
