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
| Feb 12, 2013
Bullitt Foundation says Living Building Challenge can only be met after code change
The 50,000 sf Bullitt Center in Seattle is being constructed to be the greenest, most energy-efficient commercial building in the world, and meet the ambitious goals of the Living Building Challenge.
| Feb 12, 2013
Tilt-Up Concrete Assn. offers technical advice on 2012 International Energy Code
The Tilt-Up Concrete Association (TCA) says it can be a major industry resource in helping designers adhere to the International Energy Conservation Code (IECC).
| Feb 8, 2013
WDMA releases national policy agenda for windows, doors, skylights
Document urges a regulatory stance that will support manufacturing, including favorable building codes and tax policy.
| Feb 6, 2013
Green-roofing bills approved by New Jersey's state Assembly
Two bills that would require installation of green and blue roofs on new government buildings received overwhelming approval from the state Assembly in New Jersey.
| Feb 6, 2013
BOMA favors voluntary energy benchmarking and disclosure, opposes mandates
The Building Owners and Managers Association (BOMA) International announced support for voluntary energy benchmarking, but said it opposes mandates for benchmarking, disclosure, and labeling that many states and municipalities are implementing.
| Feb 6, 2013
Lumber Standard Committee approves new Southern Pine design value changes
The American Lumber Standard Committee Board of Review has approved the Southern Pine Inspection Bureau’s design value changes for all sizes and grades of visually graded Southern Pine dimension lumber.
| Feb 6, 2013
CEIR seeks public input on draft of PV racking and attachment document
The Center for Environmental Innovation in Roofing (CEIR) has released the first public draft of PV Racking and Attachment Criteria for Effective Low Slope Metal Panel Roof System Integrationfor an initial round of public comment.
| Feb 6, 2013
Insurance Institute demonstration shows advantages of following wind resistance standards
A demonstration by the Insurance Institute for Business and Home Safety shows how powerful winds affect concrete-and-steel buildings built with different techniques.
| Jan 31, 2013
Proposed ASHRAE legionellosis prevention standard open for third public comment
Changes to a proposed ASHRAE legionellosis prevention standard associated with building water systems are open for public comment.
| Jan 31, 2013
More severe wind storms should prompt nationwide reexamination of building codes, says insurance expert
The increased number and severity of storms with high winds nationally should prompt a reexamination of building codes in every community, says Mory Katz, vice president, Verisk Insurance Solutions Commercial Property, Jersey City, N.J.
