BASC Search

Website describing how solar water heaters -- also called solar domestic hot water systems -- can be a cost-effective way to generate hot water for your home.

Training module describing the operation, efficiency, consumer and seller benefits, and cost comparison of Heat Pump Water Heaters (HPWH) against conventional gas, oil, or electric water heaters.

Report on a project that enhanced the HWSIM distribution system model to more accurately model pipe heat transfer.

Informational guide describing the design, installation, and maintenance best practices and technical considerations for integrated Heat Pump Water Heaters in single-family and multifamily new construction.

Report describing the installation and operation of forced-air heating and domestic hot water combi systems in residential homes.

Document outlining the current and the proposed draws and estimates typical ratings changes from draw specification changes for typical systems in four cities.

Report describing the best practices for the safe, efficient, and compliant installation of residential air source heat pump water heaters (HPWH) in California, aligning with the state's climate goals and providing guidance for educators, installers, and industry stakeholders.

Document discussing changes in testing the annual performance ratings for solar water heaters.

Report presenting results of a laboratory experiment studying combi systems as a mode to eliminate safety issues associated with natural draft appliances.

Journal article presenting modeling of residential gas water heaters via dynamic simulation models to determine the effect of the pilot light on their annual energy consumption.

Report about a hybrid condensing water heater (thermal efficiency = 0.973, energy factor = 0.95) installed in an occupied home in Sacramento, California, and monitored for one year to determine the actual in situ efficiency.

Report summarizing results of testing emerging combo water heating technologies under controlled laboratory operations, that differentiate the performance of the various packaged equipment configurations being offered.

Report describing combined space- and water-heating (combi) systems using a high-efficiency direct-vent burner.

Report identifying the target market for solar water heaters and potential pathways and cost/performance targets that must be met for these systems to realize large energy savings.

Report providing information to researchers, utility program managers, and building owners interested in controlling heating energy waste and improving resident comfort.

The main objective of this expert meeting was to bring together a group of experts intimately involved with issues related to assessing the performance of residential high efficiency water heating systems.

Research report providing a comparison of the most common residential water heating technologies to determine energy-efficient and cost-effective water heating technologies are when subjected to a variety of typical operating conditions.

Document pertaining to design and application guidance for combination space and tankless domestic hot water heating systems used in residential buildings, based on field evaluation, testing, and industry meetings.

Best Practices document providing an introduction to current photovoltaic and solar thermal building practices.

Research study comparing TRNSYS Type 604 pipe model against laboratory pipe heat loss test data and detailed field monitoring data.

Research project aimed to verify whether homes in the New Jersey HPwES program achieved 30% source energy savings, and if so, what measures were implemented to achieve them.

Expert meeting describing meeting details for recommendations for applying water heaters in combination space and domestic water heating systems.

Report describing the performance, cost, and carbon impacts of unitary heat pump water heaters with load-shifting controls in a shared configuration for a multi-family project, highlighting significant savings in energy usage, CO2 emissions, and utility costs.

Report comparing the performance of seven differing types of residential water heating systems in a side-by-side test configuration over a full year period.

Report describing the key findings from the first third-party field validation of 120-volt heat pump water heater (HPWH) technology, addressing the significant barriers to their adoption and emphasizing their potential role in reducing carbon emissions from residential water heating.

Report describing the objective evaluation of space conditioning interactions between heat pump water heaters and home heating systems during winter 2016-2017, revealing a smaller than anticipated impact on space conditioning loads.