Library

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.

This report describes research conducted to evaluate air transfer between the garage and living space in a single-family detached home constructed to the 2009 IECC by a production home builder in Maryland.

Case study examining the problem of unwanted air transfer from garage to living space and the effectiveness of garage exhaust ventilation or house supply ventilation to provide a solution to that.

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 outlining workflow and results of regression models on monthly and daily utility data (meter readings of electricity consumption), outlining a process for screening and gathering useful results from inverse models.

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.

Information sheet about reservoir claddings.

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

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

Research report anayzing the results of a large retrofit project, turining an old school into near zero energy consumption apartments in Greenfield MA.

Report exploring alternative methods to find long-term solutions to energy loss in 1 ½-story homes to save energy, improve comfort, prevent frost buildup on the underside of the roof deck, and reduce the risk of ice dam formation/reformation.

Research study evaluating energy savings and cost effectiveness of installing low-emissivity (low-e) storm windows over existing windows in residential homes in all climate zones.

Report outlining the issues with using existing ducts with a new low-load HVAC system, which reduces throw at supply registers causing decreased mixing of supply and room air, leading to potential thermal comfort complaints.

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...

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.

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.

Report analyzing results in crawlspace retrofits in multifamily buildings.

Study investigating homeowner measure package choices in the Illinois Home Performance with ENERGY STAR program compared to cost-optimal choices determined through Building Energy Optimization (BEopt) modeling software.

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

In this report, BSC seeks to research and report on the field monitoring of the performance of in-situ supplemental dehumidification systems in low-energy, high performance, homes in a hot-humid climate.

Technical report describing the evaluation of four different ventilation strategies for providing make-up air in high-performance, new construction multifamily buildings in the Northeast, emphasizing the challenges posed by increasing airtightness standards and the variability of system performance...

Report describing research that helps inform best practices for air-sealing multifamily buildings in the Northeast.

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.

Report outlining how Smart ventilation controls (SVC) balance energy consumption, comfort, and IAQ by optimizing mechanical ventilation operation to reduce the heating and/or cooling loads, improve management of indoor moisture, and maintain IAQ equivalence according to ASHRAE 62.2.

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

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

Report summarizing the status of a central hydronic heating system project in multifamily housing at the conclusion of the 20112012 heating season.

The study described in this white paper is based on building energy modeling with an important focus on the indoor humidity impacts of ventilation.

Measure Guideline describing how to assess and carry out the isolation of natural draft combustion appliances from the conditioned spaces of low-rise residential buildings.

This measure guideline provides guidance on combustion safety inspection procedures for appliances and heating equipment that use indoor air for combustion and dilution of flue gases in low-rise residential buildings.

Report providing step-by-step instructions for heating contractors and hydronic designers for selecting the proper control settings to maximize system performance and improve response time when using a thermostat setback.

Measure Guideline research report providing simple, long term, and durable solutions when using tapes and flashing membranes in conjunction with the exterior face of rigid polymeric foam sheathing to create the drainage plane of a wall system.

Case study about how to properly tape insulating sheathing drainage planes.

Guideline describing information and specifications relevant to air-seal existing attics.

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

This document addresses adding—or improving—mechanical ventilation systems to existing homes. The purpose of ventilation is to remove contaminants from homes either directly or by dilution. This report discusses where, when, and how much ventilation is appropriate in a home, including some...

Report describing solutions for supplemental dehumidification in warm-humid climates.

This report investigates whether mini-split heat pumps can live up to their potential for one market segment: multifamily retrofits.

The next generation of building enclosures is a key step toward achieving high-performance goals through decreasing energy load demand and enabling advanced space-conditioning systems. Yet the adoption of high-R enclosures and particularly high-R walls has been a slow-growing trend because...

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

Information sheet providing guidance about the placement of ventilation approaches.

Webpage from DOE describing how to conserve energy and save money with a home energy audit.

Case study describing the External Thermal and Moisture Management System developed by the NorthernSTAR Building America Partnership for retrofitting roofs with rigid foam over the roof deck, especially on one and a half-story homes.

DOE case study findings on raised ceiling interior duct systems.

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.

Report evaluating mechanical AC precooling strategies in homes as a method for improving the load factor by shifting cooling operation from on-peak to off-peak hours.

Factsheet describing air-sealing.

Research project evaluating the pre-and post-retrofit energy consumption of a marine climate retrofit, compare actual energy use to original predictions, and identify opportunities for cost savings in other similar retrofits in this climate.

Preliminary results of two monitored lab homes constructed to represent the thermal characteristics of typical existing Florida homes are presented.

Report assessing the performance and cost-effectiveness of a zero net energy community project in Davis, CA.