Library

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

Specifications for water heating systems designed to advance higher performing electric and gas heat pump water heaters.

Report covering moisture and leakage issues associated with spray foam insulation application to the underside of roof sheathing.

Report describing methodology, analysis, and findings from a case study of a 110-unit retrofit of gas tankless water heaters in a hot/humid climate in Alachua County, Florida.

This report outlines research activities that are expected to facilitate the adoption of energy retrofits by remodeling contractors and roofing contractors using retrofit panels which applicable to many existing house designs in most climates and markets.

Report summarizing commissioning, short-term testing, utility bill data analysis, and results of on-site monitoring of a deep energy retrofit.

Case study describing solar thermal and photovoltaic systems in new construction.

Information sheet about insulating slabs.

Case study describing solar thermal and photovoltaic systems in new construction.

Case study describing solar thermal and photovoltaic systems in new construction.

Report summarizing research results for the 30% energy savings level and demonstrates that lead builders can successfully provide 30% homes in the Marine Climate Region on a cost-neutral basis.

This report will review, and summarize the current state of understanding and research into enclosures with higher thermal resistance, so-called “High-R Enclosures.” Recommendations are provided for further research.

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.

Reference investigating the strategy of using buried and/or encapsulated ducts to reduce duct thermal losses in residential buildings.

Design guide providing solutions and tools for designing central heat pump water heater systems in multifamily and other commercial buildings.

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

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.

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.

The Guide addresses walls constructed with 2x4 wood frame studs, wood structural panel sheathing (WSP) as wall bracing and added backing for foam sheathing, a layer of rigid foam sheathing insulation up to 1.5 inches thick over the WSP, and a cladding system installed over the foam sheathing in low...

Document presenting step-by-step process for installing rigid insulating sheathing over wood studs or house wrap.

Report describing the monitored long-term performance of two solar domestic water heating systems in northern climates.

Information sheet about crawlspace insulation, including installation details.

Part of a larger LBNL report (Deep Energy Retrofit Guidance for the Building America Solutions Center), the Lessons Learned chapter focuses on successful deep energy retrofit projects throughout the U.S.

Document providing descriptions of the many insulation options available to homeowners, along with guidance on where, when, and how to install insulation throughout your house.

Case study on exhaust ventilation and corresponding outdoor air intake strategies implemented in high-performance new-construction multifamily buildings.

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.

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.

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

The New York State Energy Research and Development Authority (NYSERDA) is interested in finding cost-effective solutions for deep energy retrofits (DERs) related to exterior wall insulation in a cold climate, with targets of 50% peak load reduction and 50% space conditioning energy savings.

Brochure on specifications for solar thermal systems.

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 significant potential for energy use reductions through heat pump water heaters, which have been a crucial part of Northwest power plans for decades and have recently achieved substantial savings with new integrated models and climate specifications.

Case study of new home construction in the hot-dry and mixed-dry climate zones.

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

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

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 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.

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 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.

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.

This Measure Guideline provides design and construction information for a deep energy enclosure retrofit solution of a flat roof assembly.

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

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.

Report investigating what motivates remodelers to become energy-focused and what technical knowledge that need to be energy-focused.

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

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.

Fact sheet poster describing an online tool offered within the Building America Solution Center which provides construction guidance for builders and contractors in building and renovating homes to be more resistant to natural disasters such as hurricanes, flooding, earthquakes and wildfires, etc.

This page provides important information on how to protect yourself and your family if you suspect that you might have vermiculite insulation from Libby, Montana.

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.