Library

Report providing builders in marine climates with guidance for building homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers.

Report examining the structural properties and applications of an innovative studless building system, detailing its testing regime and providing an engineering guide for architects and engineers.

Report examining the effectiveness of an aerosolized acrylic technique for air sealing existing homes to reduce air leakage and improve energy efficiency.

Document providing guidance to U.S. home builders who want to accept the challenge.

Report summarizing the guidelines for developing and reporting analytical results in a consistent and meaningful manner for all home energy uses.

Research study describing a number of promising foundation and basement insulation strategies that can meet the requirement for better thermal control in colder climates while enhancing moisture control, health, and comfort.

Document providing an example procedure for establishing acceptance-range criteria to assess results from software undergoing BESTEST-EX.

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

Report evaluating the accuracy of the regression technique used in 2006 by using the same least-squares regression analysis on data created from hourly energy simulation software.

Document providing an example procedure for establishing acceptance-range criteria to assess results from software undergoing BESTEST-EX.

Report presenting the process of a residential retrofit project for houses in the states of Florida and Alabama, including findings at the time of reporting and highlights of the first home to meet the target HERS Index of 70.

Report describing the ground-source IHP (GS-IHP) design and includes the lessons learned and best practices revealed by the research and development (R&D) effort throughout.

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.

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

Fact sheet describing the function of housewrap, its attributes, and common problems associated with its use, including housewrap vs. building paper and housewrap installation; also published in FEMA P-499 “Home Builder’s Guide to Coastal Construction: Technical Fact Sheet Series.”

Document presenting a cost effective method that was used by four builders in the Gainesville, FL area to construct interior ducts in over a dozen site built homes.

Fact sheet describing how typical wall moisture barrier systems work, the moisture barrier system and common problems associated with them; also published in FEMA P-499 “Home Builder’s Guide to Coastal Construction: Technical Fact Sheet Series.”

Report on the use of vapor diffusion ports to reduce moisture issues with buried ductwork in unvented attics in hot-humid climates.

Document describing a hygrothermal modeling study, including all of the US climate zones, a range of interior humidity levels and numerous arrangements and types of insulation.

Information sheet about mold mitigation.

Report highlighting the evaluation methods used and extent of wind washing found in a study analyzing wind washing in thirty-two two-story homes.

Report presenting the results of a study evaluating retrofit solutions for addressing the effects of wind washing on homes.

Report briefly reviewing past research on the effects of occupant behavior on residential energy use and then covering a two year pilot evaluation of a low cost residential energy feedback system installed in twenty case study homes in Florida.

Document with information about the most practical methods to achieve whole-wall performance of R-30 or above.

Information sheet describing refrigerant line installation and system startup procedures.

Webpage describing a DOE Cold Climate Heat Pump Challenge. The challenge engages industry partners and focuses around the Cold Climate Heat Pumps, a more environmental and efficient heating alternative to traditional heating.

Presentation providing information about correctly installing ductwork in new and existing homes.

Report identifying the steps to take, with the help of a qualified home performance contractor, to seal unwanted air leaks while ensuring healthy levels of ventilation and avoiding sources of indoor air pollution.

Report about a tool developed to enable users to compare a typical 1970s ranch home against an IECC 2009 code-compliant home of the same configuration and against the 70s base case plus retrofits.

Information sheet about insulation retrofits for the hot-dry climate zones.

Information sheet about exterior insulation in the hot-dry climate zones.

Information sheet about HVAC equipment design to maximize energy efficiency in the hot-dry climate zone.

Information sheet describing solar PV upgrade for an existing homes.

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

Information sheet describing solar hot water systems in existing homes.

Information about a roof retrofit using a metal, cool roof system.

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

Information sheet about envelope and roof moisture control retrofit for a home.

Information sheet about window retrofit strategies for hot-dry climates.

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.

Information sheet describing how to select a properly sized water heater based on household usage patterns, peak demand, and heater type—whether tankless, solar, or storage-based—to ensure efficiency and adequate hot water supply.

Research report that validates Pinhole Insulation®, offering a cost-effective, minimally invasive solution for enhancing insulation and air sealing in enclosed roof cavities, improving R-value by 60% compared to traditional methods.

This report examines indoor air quality in post-2013 homes across various climates, focusing on contaminant levels, ventilation equipment usage, and control measure impact, with regional data from Florida, Georgia, and South Carolina.

Factsheet describing the importance of system charging, superheat and subcooling.

Research study describing demonstration homes that provided a wealth of information for the building community in terms of the science, effort, and cost of increasing the energy efficiency of our nation's housing stock.