Library

Research study estimating potential energy savings relative to conventional ducted air distribution, and identifying equipment requirements, costs, and barriers.

Report describing an air distribution system composed of a series of uniformly-sized ducts that terminate in rooms throughout the home and return to a central manifold, similar in fashion to a “home-run” cross-linked polyethylene plumbing system.

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.

Document providing guideance and considerations for duct design in an energy efficient house.

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

Fact sheet describing an innovative aerosol-based sealing technique for tightening building envelopes in new homes, involving pressurizing the structure and dispersing an aerosol sealant "fog" to autonomously identify and seal leaks, with real-time feedback through a standard blower door and laptop...

Report describing two retrofit duct sealing techniques - manually-applied sealants and injecting a spray sealant, that were implemented in several low-rise multi-unit buildings in North Carolina.

Report summarizing systems research activities for new housing in hot-humid climates, including NightCool, interior duct systems in manufactured housing, ventilation and dehumidification, plug load reduction and solar and conventional hot water.

Brochure intended to provide readers with a working knowledge of residential heating and cooling duct systems.

Brochure with details on HVAC duct air sealing.

Brochure with information about ducts in conditioned space.

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

Case study about Artistic Homes of Albuquerque, New Mexico, the first home builder in the United States to offer true net zero energy construction to the average home buyer on every home it builds.

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.

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

Report about City of Meriden Housing Authority's (MHA) collaboration with Jonathon Rose Companies to complete a gut renovation of 126 residential units in the Chamberlain Heights retrofit project.

Report on the stability of furring strips as a means for cladding attachment over walls with thick exterior rigid insulation.

Research study investigating the energy performance and cost effectiveness of several state-of-the-art retrofit strategies that could be used in residential houses in the Boston and New England area.

Report summarizing one year of monitoring and analysis of the effectiveness of a space conditioning system at maintaining temperature and relative humidity levels in a test home, as well as room-to-room differences and the actual measured energy consumption by the space conditioning system.

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 I of the Guide addresses walls constructed with 2x6 wood frame studs, wood structural panel (WSP) sheathing as exterior sheathing, gypsum board as interior sheathing, and a cladding system installed over WSP sheathing in low-rise residential buildings up to three stories in height. Walls with...

Part I of the Guide addresses walls constructed with 2x6 wood frame studs, wood structural panel (WSP) sheathing as exterior sheathing, gypsum board as interior sheathing, and a cladding system installed over WSP sheathing in low-rise residential buildings up to three stories in height.

Report on experiments comparing the cooling and heating seasonal and peak demand performance of different variable-capacity air conditioning and heat pump units.

Report focusing on building envelopes that have been enhanced with phase change materials (PCMs), which can simultaneously reduce total cooling loads and shift peak-hour loads.

Job Process sheet for the manufactured housing industry showing how to cut insulation batts to fit wall cavities in a factory production environment.

Guidance document on deep energy retrofits.

Report identifying two barriers that limit the ability of builders to explore opportunities for higher levels of energy efficiency in housing: the use of duct system materials that inherently achieve airtightness and are right-sized for low-load houses, and, the ability to air seal fire separation...

Document comparing simulation results from a modified version of the EnergyGauge program to include various HVAC runtime strategies.

Research study describing experiments run in an unoccupied 1600 square foot house to evaluate the delivered performance as well as the relative performance of a SEER 21 variable capacity heat pump versus a SEER 13 heat pump.

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.

Report evaluating opportunities to improve and streamline delivery of residential retrofit measures.

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

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.

Fact sheet describing the Extended Plate Wall (EPW) a system that incorporates a 2-inch layer of foam plastic insulative sheathing within the framing for top and bottom plates, streamlining air sealing, window and door installation, weather resistive barrier application, and cladding attachment for...

Report on the field evaluation of whole-building approaches and estimation of the relative contributions of select technologies toward reducing energy use related to space conditioning in new manufactured homes.

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

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 summarizing approaches to addressing duct leakage in hot humid climates.

Research study describing field testing performed in 32 two-story Florida homes to characterize wind washing failures of the house air and thermal boundary.

Report presenting lab evaluation of five heat pump water heaters available in the US market today.

Report proposing mini-split heat pumps as a new retrofit option to replace resistance heating in the Pacific Northwest.

Report on the long-term performance of mini-split heat pumps.

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.

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.

Document intended for designers and installers of hydronic heating systems interested in maximizing the overall system efficiency of condensing boilers when coupled with baseboard convectors. It is applicable to new and retrofit projects.