Library

A fact sheet providing information on ENERGY STAR certified LED bulbs & how to find the right one to fit your lighting fixture.

Website explaining the LEED v4.1 program and providing a portal for those who want to investigate or start a LEED project.

ENERGY STAR lightbulb criteria.

A website explaining why homeowners should install ENERGY STAR certified lightbulbs, which helps to save homeowners on utility bills and protect the environment.

Web article describing two options for sizing ductless minisplit heat pumps, including a free HVAC sizing tool.

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

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 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.

Research study outlining results of monitoring a low temperature heat pump.

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

Website describing Minnesota Power’s New Construction Energy Efficiency program that promotes building practices and technologies that enhance new residential construction.

Study in which a central heat pump water heater system was monitored in detail and used to create a model for assessing similar systems in various climates.

Database from the National Fenestration Rating Council providing a directory of NFRC-certified window products searchable by manufacturer, product type, CPD number, or various NFRC label specifications.

Report detailing the proposed point structure for the prescriptive approach of the energy efficiency chapter of the NGBS update.

Information sheet about the National Residential Efficiency Measures Database, a public database that characterizes the performance and costs of common residential energy efficiency measures.

Database compiling extended capacity data for numerous cold climate heat pump manufacturers and models.

Research study conducted on new specifications that would improve on the energy requirements of a NEEM home.

Document on the development of two simple in-home efficiency test methods that can be used by technicians, researchers, or interested homeowners to verify the correct operation and energy efficiency of a homes air conditioning and heating equipment.

Report describing the key findings from the first third-party field validation of 120-volt heat pump water heater (HPWH) technology, addressing the significant barriers to their adoption and emphasizing their potential role in reducing carbon emissions from residential water heating.

Report describing a laboratory assessment on the performance of Rheem 120-volt heat pump water heaters (HPWH), aimed at identifying optimal installation locations for these new "plug-in" models based on comprehensive testing under various conditions.

Report designed to help a builder understand quality management and its role in transitioning from conventional to HPH building and remodeling.

Report showing how to identify, inventory, and screen buildings that are potentially hazardous because of seismic hazards.

Fact sheet describing best practices in installing leak-free refrigerant systems, including specifics on creating flare joints and brazed joints, pressure testing, vacuum testing, and charging the system with refrigerant.

Data tables on U.S. renewable energy consumption and general trends in the market for renewable energy.

The RERH specifications and checklists take a builder and a project design team through the steps of assessing a home’s solar resource potential and defining the minimum structural and system components needed to support a solar energy system.

Website tool intended to guide home builders in assessing whether a new home has the proper physical orientation to support a future installation of a solar energy system.

Report describing information from DOE about rules and standards for residential air conditioners and heat pumps.

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.

Website providing data on household energy usage collected from the Residential Energy Consumption Survey (RECS), a nationally representative sample of more than 18,000 housing units, representing the 123.5 million housing units occupied as primary residences in the U.S.

Paper covering a parametric study of foundation heat exchanger-based ground source heat pump systems for several house configurations in a range of European locations, with an emphasis on determining feasible combinations.

Report discussing instrumentation methods and field operation characteristics of two GSHPs in test houses, including a comparison between the manufacturers listed COP values and the COPs calculated from field data.

A fact sheet educating homeowners on the importance of residential safe rooms, including their cost and how to register a safe room with local officials.

Homepage for ENERGY STAR’s windows, skylights, and doors program providing information for consumers and links to product directories.

Website describing the USRC, which "brings an unparalleled level of capability to the mission of improving community resilience in the built environment."

Resource to help builders better understand the WaterSense requirements for labeled homes and assist them in meeting the criteria so they can receive the label for their new construction.

This project analyzed combined condensing water heaters or boilers and hydronic air coils to provide high efficiency domestic hot water (DHW) and forced air space heating. Called "combi" systems, they provided similar space and water heating performance less expensively than installing two...

Report about a deep energy retrofit Cool Energy House.

Information sheet describing solar PV upgrade for an existing homes.

Article explaining the energy cost reduction and other benefits associated with installing a heat pump clothes dryer

Technical study exploring the impact of different installation faults on heat pump performance in a single-family house.

Report summarizing commissioning, short-term testing, and analysis that occurred before, during, and just after the actual retrofit of the Bay Ridge project.

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.

Webpage describing the STEP campaign encouraging the use of smart diagnostic tools to reduce installation faults.

Website providing consumers with resources to find, select and install heat pump water heaters.

The RERH specifications and checklists take a builder and a project design team through the steps of assessing a home’s solar resource potential and defining the minimum structural and system components needed to support a solar energy system.

Specifications to assist builders in designing and constructing homes equipped with a set of features that make the installation of solar energy systems after the completion of the home’s construction easier and less expensive.

Research study presenting a unique opportunity to both identify and evaluate deep retrofit measures that are practical and potentially cost effective for the retrofit market, as well as review the cost effectiveness of the Passive House design approach for achieving energy savings in deep retrofits.

ENERGY STAR webpage describing the benefits of storm windows and a link to a product list.

Webpage providing an ENERGY STAR climate zone map and criteria for ENERGY STAR storm windows per climate zone.