Library

Report describing the performance, economics, space heating impacts, and user satisfaction of heat pump water heaters (HPWHs) in the upper Midwest, based on a field study and survey of participants in the MECA HPWH incentive program.

Fact sheet describing principles of insulating steam distribution and condensate return lines as an effective way to prevent energy loss.

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.

This webpage provides an interactive walk-through of the installation of a heat pump water heater in a home in Massachusetts, including how-to videos of the installation, video interviews with the homeowners, installer, and utility program partners, and visual tours of the home before and after...

Report that describes BSC's Houses That Work II (HTWII) climate-specific technical resource, beginning with an overall HTWII introduction and four sections explaining the four most important hygro-thermal climate regions: Hot-Humid, Mixed-Humid, Cold, and Hot-Dry/Mixed-Dry.

Webpage describing benefits of adding battery storage to homes and an estimation tool.

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 research conducted to support California’s Title 24, Part 6 Building Energy Efficiency Standards by analyzing the impact of installation location and ventilation on heat pump water heater (HPWH) performance, emphasizing the need for proper installation to maximize efficiency...

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.

This webpage provides an interactive walk-through of the installation of a heat pump water heater in a home in Maine, including how-to videos of the installation, video interviews with the homeowners, installer, and utility program partners, and visual tours of the home before and after installation...

Webpage from Boston Solar describing how solar plus storage options can be beneficial for maintaining electricity during power outages.

Guidebook providing useful examples of high performance retrofit techniques for the building enclosure of wood frame residential construction in a cold and somewhat wet climate.

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.

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

Document developed to help residential builders and retrofitters transition from tank-type water heaters to tankless water heaters.

Study investigating measured cooling energy savings in homes across the U.S. from the installation of roofing with higher solar reflectance.

Study investigating measured cooling energy savings from the installation of wall finishes with higher solar reflectance.

Web resource that lays out the pre-work considerations, methods and finishes for installing mechanical insulation.

This paper discusses model validation using data from three thermosiphon systems.

This report requires all elements of rooftop PV panel systems to be designed for component and cladding pressures per ASCE 7-10.

Standard covering overs mounting systems, including mounting devices, clamping devices and ground lugs for use with photovoltaic modules and panels and contains requirements for ground-mounted and roof systems as part of a nonstructural building component.

Study in which a central heat pump water heater system was monitored in detail and used to create a model for assessing similar systems in various climates.

This Photovoltaic (PV) Installer Resource Guide is an informational resource covering basic requirements for PV installations intended for individuals pursuing the Photovoltaic Installer Certification credential offered by the North American Board of Certified Energy Practitioners (NABCEP).

A document providing guidance on integrating a PV array with a roof system.

Website providing comparison charts and reviews of off-grid inverters for solar power systems.

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

Article investigating how a linear input/output relationship can be used as a simple model of the performance of a combination hydronic heating system over heating only, DHW only, and combined loads.

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 a laboratory assessment on the performance of Rheem 120-volt heat pump water heaters (HPWH), aimed at identifying optimal installation locations for these new "plug-in" models based on comprehensive testing under various conditions.

Large scale simulation study investigating the effects of cool roofs and walls on buildings of various vintages across the U.S., with special attention given to California.

Report aiming to "de-mystify" technology and economic considerations of residential PV systems.

Website estimating energy production and cost of energy of grid-connected photovoltaic (PV) energy systems throughout the world.

Searchable database of over 3,000 roofing products that have undergone solar reflectance and thermal emittance testing.

Searchable database of wall cladding and coating products that have undergone solar reflectance and thermal emittance testing.

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.

A report presenting alternative approaches for reducing the costs of roof-mounted, grid-connected photovoltaic (PV) systems.

Data tables on U.S. renewable energy consumption and general trends in the market for renewable energy.

The RERH specifications and checklists take a builder and a project design team through the steps of assessing a home’s solar resource potential and defining the minimum structural and system components needed to support a solar energy system.

Website tool intended to guide home builders in assessing whether a new home has the proper physical orientation to support a future installation of a solar energy system.

Report discussing instrumentation methods and field operation characteristics of two GSHPs in test houses, including a comparison between the manufacturers listed COP values and the COPs calculated from field data.

Website with information and research about residential hot water distribution systems.

Brochure with information on residential solar hot water systems.

Brochure detailing the guidelines, recommendations, and preferences of the City of Burnsville for citizens installing solar photovoltaics.

DOE report characterizing the installed base of windows and window coverings, and how users operate window coverings in order to enable precise quantification of energy savings.

A retrofit sheet providing information on elevating and securing water heaters to protect against damage during a flood.

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

Information sheet describing solar PV upgrade for an existing homes.

Information sheet describing tankless hot water heating systems in existing homes.

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