Library

Research report describing study of interior and exterior air sealing techniques to stop ice dams in five 1.5-story retrofit homes conducted by the NorthernSTAR Building America Partnership team run by University of Minnesota.

Report about two test home evaluations that provided valuable data about the true in-field performance of various building mechanical systems and LAMELs.

Report about a building project in the marine climate.

Research study discussing how housewraps restrict or permit the passage of water molecules based on size, but cannot control the direction in which the water vapor molecules move.

Brochure providing information about flashing in all cimates.

Information sheet offering general recommendations on supplemental humidity control and outlines viable system configurations.

Information sheet providing information about vapor management in building assemblies.

Information sheet providing details on the vapor permeance of different types of materials used in building assemblies.

Report describing the recommended best practices to achieve energy savings without compromising health or safety.

Research study about key sustainability concepts, durability, energy efficiency and new flood resistant design.

Document describing the Building America research benchmark for the residential building program.

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.

Web report explaining how correct filter sizing is an issue that applies to all new and existing homes that use ducted HVAC systems.

Report describing ventilation system design, including a central fan integrated supply (CFIS) system, made up of a 6-inch outdoor air intake duct connected to the return side of the air handler with a fan cycling control to make sure the fan runs a programmed minimum amount of time.

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

Report on heating and cooling air-distribution ducts that are insulated, installed close to the ceiling in a vented attic and covered with attic insulation to minimize energy loss.

Part of a larger LBNL report (Deep Energy Retrofit Guidance for the Building America Solutions Center), the Source Energy and Carbon Decisions chapter helps users carefully assess the impacts of switching from gas to electricity for heating end-uses, using source energy and/or carbon emissions...

Report examining the use of smart thermostat data to detect performance degradation and optimize comfort control in home AC systems.

Research report with results from field tests in two homes in Austin, Texas, from October 2011 to June 2012 to evaluate the comfort performance of ductless mini-split heat pumps

Case study describing foundation wall moisture studies at a research facility in Minnesota run by Building America team NorthernSTAR.

Report demonstrating how the initiative achieves Building America (BA) goals of 30%-50% energy savings in multifamily dwellings in the hot-humid climate zone.

Report investigating performance and energy savings potential of heat pump water heaters.

Report using pre- and post-system upgrade data to analyze the energy savings associated with Iowa's HVAC SAVE program for space heating.

This report evaluates the performance of variable-capacity comfort systems, with a focus on inverter-driven, variable-capacity systems, as well as proposed system enhancements.

Research study that utilizes EnergyPlus equipped with the moisture capacitance model to analyze the indoor relative humidity in three home types.

Document reviewing four cold-climate northern Illinois energy efficiency retrofit programs to identify practices, tools, and approaches to streamline and reduce costs of comprehensive retrofits, and to improve the consistency of audit and retrofit delivery practices across different programs.

Research study examining the effective moisture penetration depth (EMPD) model and its suitability for building simulations.

Research study searching for combinations of existing technologies that could enable a minimally invasive, cost-competitive, easily deployable method of upgrading soil-side foundation insulation in existing buildings.

Case study describing novel technique for installing exterior spray foam on foundation walls that uses high-pressure water sprayer and a “hydro vac” to remove dirt along the foundation wall.

Expert meeting identifying installation practices that provide the best installed efficiency for residential gas furnaces, explain how AFUE and field efficiency can differ, and investigate the impact of installation practices on the efficiency and long-term durability of the furnace.

Expert Meeting about interior insulation retrofit of mass masonry wall assemblies held on July 30, 2011.

Expert meeting held to discuss simplified space conditioning systems in low load homes, including the relationship between advanced thermal enclosures, space conditioning systems and comfort.

Expert meeting held to review and discuss results and future plans for research to improve the performance of hydronic heating systems using condensing boilers and baseboard convectors.

Information sheet with an analysis of mini split heat pump systems.

Report on field monitoring of inverter-driven ASHPs in cold-climate homes.

Technical report on a field validation study that utilizes low-cost indoor air quality sensors to assess a smart ventilation system's effectiveness in maintaining acceptable indoor humidity in low-load homes in humid environments, revealing that while the smart ventilation algorithm demonstrated...

Research report assessing the moisture and cooling load impacts of airtightness and mechanical ventilation in homes in hot-humid climates.

Report presenting a cold climate project examining and alternative approach to ground source heat pump ground loop design.

Information sheet about groundwater control.

Report describing the various heat pump retrofit options for multifamily buildings in the U.S., segmented by building typology and heating system, to support better environmental, economic, and health outcomes.

Presentation about heat pump water heater modeling using EnergyPlus.

Research study presenting results of an existing home monitoring project designed to measure wall cavity moisture characteristics.

Website for consumers describing heat pump water heater technology and linking to retailers and installers.

Report providing the results of an analysis of humidity control and variable refrigerant flow (VRF) system efficiency in three new multifamily buildings in New York, NY.

Report providing information about energy-efficient heating, ventilation, and cooling (HVAC) equipment options to help homeowners cut their energy use, reduce their carbon footprint, and increase their homes comfort, health, and safety.

Report evaluating the relative effectiveness of various control and distribution strategies to improve hydronic space heating performance in existing low-rise multifamily buildings

Report exploring four questions to determine the level of risk associated with adding drained exterior insulation to the exterior of an existing home during an energy retrofit.

Report presenting system design packages for cold and mixed-humid climates.

Report presenting improved air conditioner (AC) and heat pump (HP) modeling methods in the context of whole-building simulation tools.

Presentation on Improving Air-Conditioner and Heat Pump Modeling.