A new web-based tool by the Department of Energy offers comprehensive information about how to size, select, and install electric heat pump water heaters (HPWHs).
HPWHs can be two to four times more efficient than standard units. The benefits are maximized when installers follow best practices and choose the best model and size for the home. The HPWH Installation Tool provides customized guidance for installers, sales associates, and homeowners to help overcome barriers to HPWH adoption.
A HPWH resembles a traditional water heater, but rather than using a gas-fired burner or electrical element to warm the water in the tank, the HPWH extracts heat from the surrounding air. Both HPWHs and traditional water heaters last for about 15 years, but HPWHs require a certain amount of airflow to operate effectively, so the location of the water heater needs to be evaluated. It’s important that HPWHs are sized correctly because an undersized heater could, under certain conditions, result in lukewarm water.
The installation tool also helps determine whether a home’s electrical panel needs to be updated—a common situation when replacing a fossil fuel-fired water heater with a HPWH—or if a HPWH that plugs into a standard 120-volt electrical outlet might be a viable option.
Related Stories
Codes and Standards | Aug 15, 2019
New edition of Building Code Requirements for Structural Concrete available
American Concrete Institute document includes major technical changes.
Codes and Standards | Aug 13, 2019
Coaching pays off for new managers
Study finds increased engagement and readiness for new roles.
Codes and Standards | Aug 12, 2019
New curtain wall design guidelines released
AAMA document includes mandatory language, optional language, and detailed technical commentary.
Codes and Standards | Aug 9, 2019
Cities modify density zoning to spur more affordable housing projects
Solutions include eliminating single-family zoning and allowing taller apartments in higher-density zones.
Codes and Standards | Aug 8, 2019
More designers focusing on acoustic properties of buildings
Recognition that structures should be acoustically satisfying.
Codes and Standards | Aug 7, 2019
Illinois law makes all single-occupancy restrooms gender-neutral
All must comply by January 1.
Codes and Standards | Aug 6, 2019
New technology, aligning training with local trends among keys to workforce development
Construction industry must also invest in training, recruiting high school students.
Codes and Standards | Aug 1, 2019
Planners, city official rethink parking requirements on new projects
Reducing number of parking spots frees up land for ‘more purposeful’ uses.
Codes and Standards | Jul 31, 2019
USGBC-LA chooses first ‘Net Zero Accelerator’ technologies
Wide range of solutions address numerous environmental challenges.
Codes and Standards | Jul 30, 2019
Solar brokerage will provide financing for small/medium businesses
First to fund solar for smaller-scale commercial operations.
