Library

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.

Study characterizing how foundation heat exchangers (FHXs) used in residential ground source heat pump systems represent a potential cost savings due to their lesser first cost over other types of heat exchangers.

Information sheet providing detail about hand fabrication of a one-piece straight duct from a 48" x 120" x 1" thick (1.22 m x 3.05 m x 25 mm) sheet where the total inside duct dimensions equals 112" (2.84 m) or less.

Standard providing a comprehensive approach to evaluating, selecting, specifying and installing flexible duct in HVAC systems.

Calculator determining the appropriate design pressures for steep-slope roof coverings for roofers and evlauators.

Report analyzing the effect of global climate change on national interests, and providing climate predictions.

Website with prepopulated information about the United States renewable resources.

Research report presenting results of short term tests on measures used in an energy efficiency retrofit project in California.

Presentation about proper installation of flexible ducts.

Report sumarizing results of an ICF investigation of side-by-side houses in Knoxville, Tennessee.

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.

Standards criteria supporting ICC HVAC duct support standards.

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.

Report showing installers how to attach ducts, pipes, and associated equipment to buildings to minimize earthquake damage.

Report describing as-found interior platform return plenums, the magnitude of their contribution to the total amount of duct leakage, and techniques and results of retrofits executed by the HVAC trade during equipment replacement.

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.

Guide describing sound mitigation measures to lower building natural disaster vulnerability to assist local officials and community decision makers in coastal areas.

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 using a field test plan to evaluate the success of implementing energy efficiency upgrades at the community scale incorporating whole-house systems integrated measures package (SIMP).

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.

Factsheet describing how to test the duct leakage of a manufactured home in the manufactured home factory.

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.

Document with evaluation of 14 heat pump water heaters (including three recently released HPWH products) installed in existing homes in the northeast region of the United States.

Report providing guidance on how to implement a compact duct system inside a plenum truss bulkhead of a one-story, slab-on-grade home.

Report describing recommendations for optimizing flexible duct, constant-volume HVAC systems using junction boxes.

Document covering the technical aspects of buried and insulated ducts (BEDs), as well as the advantages, disadvantages, and risks of BEDs compared to alternative strategies.

Report describing the sealing and insulating of HVAC duct systems in existing homes.

Document illustrating guidelines for efficient installation of interior duct systems in new housing.

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

Research study analyzing measured energy savings from a moderate retrofit by comparing post-retrofit performance with measured pre-retrofit monitored data.

Report summarizing a case study about the performance of three occupied homes built in 2009 in San Antonio, Texas.

Standard that prescribes a testing method to determine the efficiency of space heating and/or cooling thermal distribution systems under seasonal and design conditions. This version of the standard was published in the year 2014, and is available for preview and purchase at the reference link. The...

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

Report detailing a three-winter study on unvented roof assemblies in a cold climate, assessing insulation material, ridge diffusion vent presence, vapor control membranes, relative humidity, and interstitial airflow. Results indicate that utilizing air-permeable fibrous fill insulations in unvented...

Report detailing a three-winter study on unvented roof assemblies in a cold climate, assessing insulation material, ridge diffusion vent presence, vapor control membranes, relative humidity, and interstitial airflow; results indicate that utilizing air-permeable fibrous fill insulations in unvented...

Conference paper making the case that moving ducts to conditioned space saves energy, is practical for production builders (when accompanied by careful pre-planning), and creates significant andmarketable energy savings for homebuyers.

A website issuing watches, warnings, forecasts, and analyses of hazardous tropical weather and increasing the understanding of hazards.

This report is designed to meet ASHRAE 62.2-2010/2013 and ANSI/ACCA’s 5 QI-2015 protocol, thereby improving the performance of HVAC equipment in new homes when compared to homes built to minimum code.

The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating based on a hurricane's sustained wind speed.

Guide providing information on controlling attic ductwork sweating.

The Enhanced F-scale is a set of wind estimates (not measurements) based on damage which uses three-second gusts estimated at the point of damage based on a judgment of 8 levels of damage to the 28 indicators listed.

Fact sheet describing a novel, simplified air delivery system using a plug-and-play model that features 3-inch diameter flexible ducts, efficient fittings, and a simplified installation process that resulted in successful market engagement through commercialization.

Document about development of recommendations to help residential HVAC designers select optimal supply inlet size and system operating conditions to maintain good thermal comfort in low heating and cooling load homes.

Research study using modeling to determine optimal combination(s) of components/pumps, high efficiency heat sources, plumbing configurations and controls that result in the highest overall efficiency for a hydronic system.

Report presenting performance results from tests conducted on an energy efficiency retrofit project in Stockton, California.