Library

Report presenting long-term evaluation results from a hot-dry climate project that examines thermal and HVAC performance in a highly efficient home.

Report presenting a cold climate project that examines the relationships among energy efficient single-family residential thermal enclosures, room-to-room temperature variations, and simplified space conditioning systems.

Report about a two-year study intended to document the energy performance of a house in each sub-metered area and compare the performance to modeled predictions and to assess the thermal comfort performance of the single point mini-split heat pump.

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 on the impact of air sealing between the foundation and the living space on radon transport reduction across the foundation and living space floor assembly at fifteen home.

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.

Brochure describing use of low-e storm windows as effective ways weatherization programs can increase the efficiency of windows without significant costs.

Report focusing on managing the driving forces that move air and water vapor across the building envelope.

Document providing information on the impact of various defects and the potential energy savings that can result from proper maintenance, and describing a two-step process for diagnosing and correcting faults. This document is targeted towards home performance contractors who are relatively...

Guideline describing the importance of the different types of multifamily building attics and their unique challenges, and outlines strategies and materials used in air-sealing them.

Document covering two fundamental retrofit strategies for air sealing around air handling systems that are located within the living space in an enclosed closet.

Document describing good practices for insulating basements in new and existing homes.

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.

Report describing the installation and operation of forced-air heating and domestic hot water combi systems in residential homes.

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.

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.

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.

This Measure Guideline provides design and construction information for a deep energy enclosure retrofit solution of a flat roof assembly.

Report on two approaches to retrofitting existing double-stud walls.

Report describing a deep energy enclosure retrofit solution for insulating mass masonry buildings from the interior.

Document describing a process to help builders, homeowners, and designers select energy-efficient windows for new and existing residential construction in all U.S. climate zones.

Report about evaporative condensers, to provide information on a cost-effective solution for energy and demand savings in homes with cooling loads.

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.

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.

Document covering installation of high efficiency gas furnaces, including when to install a high efficiency gas furnace as a retrofit measure, how to identify and address risks, and steps to follow for the selection and installation process.

Document providing information on basement insulation, air sealing and water management retrofits.

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 wall assemblies that use layers of rigid exterior insulation thicker than 1-½ inch and require a secondary cladding attachment location exterior to the insulation.

Information sheet providing information on installing Rigid XPS foam board insulation to existing brick masonry walls.

Report summarizing the importance of properly insulating and air sealing masonry walls, providing step by step instructions and approaches.

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

Report describing the use of passive vents as a source of outdoor air in multifamily buildings.

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.

Research study showing that for a relatively small investment, a variable speed pool pump can reduce pool pump energy use by 50% to 75%.

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

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...

Document intending to put some context and structure around the process of balancing and tuning one-pipe steam systems to help practitioners begin to garner the potential in energy savings that this measure presents.

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

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

Report describing the use of mineral fiber insulating sheathing in a high performance enclosure retrofit package.

Document developed to help residential new construction builders transition from using a three-coat stucco system to a one-coat stucco system installed over 1 in. of expanded polystyrene (EPS) insulation.

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

Guide describing proper application, design, and installation of mechanical ventilation cooling systems for homes located in hot-dry and cold-dry climates, as well as a means of understanding the benefits, costs, and tradeoffs of these systems.

Report describing the most cost-effective ventilation and indoor air quality solutions for multifamily homes that meet ASHRAE 62.2-2016.

Document providing renovators and retrofit contractors an overview of considerations when including wall air sealing and insulation in an energy retrofit project.