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 | Oct 7, 2019
Tailgating remains a critical building security threat, say security professionals
Few buildings provide beefed up provisions to counteract threat.
Codes and Standards | Oct 7, 2019
New seismic standard to evaluate, retrofit existing structural steel buildings open for review
AISC seeks input through Nov. 4.
Codes and Standards | Sep 27, 2019
Open source tool allows comparison of embodied carbon emissions from construction materials
Enables carbon-smart choices during material specification and procurement.
Codes and Standards | Sep 27, 2019
AIA declaration: Climate change requires ‘holistic approach’
Must address interdependencies among people, buildings, infrastructure, and the environment.
Codes and Standards | Sep 26, 2019
San Jose’s new building energy code is the most stringent among large cities
New regulations aim to make zero-emission electric buildings the norm.
Codes and Standards | Sep 26, 2019
Building support for climate action depends on linking it to health, economic benefits
USGBC report finds most people don’t think environmental problems significant enough to prioritize action.
Codes and Standards | Sep 20, 2019
OSHA has a new chief for its construction directorate
Former Army medical staffer Scott Ketcham has extensive OSHA experience.
Codes and Standards | Sep 20, 2019
American Wood Council updates free Connection Calculator
Tool includes cross-laminated timber connection provisions and post-frame ring shank nails.
Codes and Standards | Sep 19, 2019
Virtual reconnaissance of Bahamas finds some structures performed well during Dorian
Amid devastation, lives likely saved by resilient buildings.
Codes and Standards | Sep 19, 2019
Obama-era Waters of the U.S. rule revoked
New rule expected to define protected waterways more narrowly.
