Library

Report providing a synopsis of a project to evaluate the performance of a roof-integrated solar water heating system.

Website describing how solar water heaters -- also called solar domestic hot water systems -- can be a cost-effective way to generate hot water for your home.

Outlines the minimum criteria for a solar water heating system installed by a Solar Water Heating Program trade ally under Energy Trust of Oregon’s Solar Water Heating Program.

Report about proper water heater selection developed to provide step-by-step procedures for evaluating preferred cost-effective options for energy efficient water heater alternatives based on local utility rates, climate, and anticipated loads.

Information for properly sizing gas lines for use with tankless water heaters and other gas appliances.

Resource manual for builders, designers, architects, plumbers, and others interested in the WaterSense Labeled Homes Program providing an overview of the program, explains how to meet the program requirements, gives descriptions of water-saving technologies, and provides links to further resources.

Conference paper summarizing the relative performance of currently available Heat Pump Water Heaters (HPWH) models, the energy implications of different installation locations (garage, basement, or conditioned space) and ducting configurations (exhaust ducting, full ducting, or no ducting), as well...

Case study of new home construction in the hot-humid climate.

Case study of new home construction in the hot-dry and mixed-dry climate zones.

Report about partnership to build three communities of net zero houses.

Presentation report detailing Heat Pump Water Heater (HPWH) interaction with space conditioning systems in real-life test scenarios that explains some of the problems arising from these interaction and information that can be used to make the system more efficient.

EPA WaterSense guidance on urinals.

Report on investigating the effectiveness of using solar thermal water heaters to address heat losses from piping while recirculating water in multifamily buildings.

Research study comparing TRNSYS Type 604 pipe model against laboratory pipe heat loss test data and detailed field monitoring data.

Report about a project with successful integration of numerous energy-conservation and renewable-energy features into a beautiful, comfortable, and very energy-efficient off-grid home.

ENERGY STAR overview on certified ventilation fans.

State building energy code for the State of Washington.

A info sheet providing information on ENERGY STAR certified water heaters and the various criteria water heaters must undergo to become ENERGY STAR certified, including metrics on efficiency and performance.

A preparedness guide guiding homeowners on how to secure an indoor home water heater safely to wall studs.

Website containing useful resources regarding central heat pump water heater systems.

Resource that provides a directory of individuals that have successfully completed all requirements of at least one WaterSense Approved Certification Method (WACM) through a Home Certification Organization (HCO).

Website providing a searchable list of products that meet the EPA WaterSense criteria for water savings.

Specification of criteria for lavatory faucets and faucet accessories under the U.S. EPA WaterSense Program.

Webpage from U.S. Environmental Protection Agency describing the EPA WaterSense program including the Mandatory Checklist for WaterSense Labeled Homes, information on how to get certified, and information on finding or becoming a WaterSense Home Certifying Organization.

Web page providing links or specifications for homes to be labeled through the U.S. Environmental Protection Agency’s (EPA’s) WaterSense program.

Webpage describing the home certification organization, 24/7 Certifications and their requirements for whole house water management in a checklist format.

Fact sheet describing the home certification program CHEERS and its requirements for whole house water management in a checklist format.

Webpage describing the home certification program, Home Innovation Research Labs' requirements for whole house water management.

Fact sheet outlining requirements for WaterSense labeled bathroom sink faucets, detailing their water-efficient features, compliance with flow rate standards, testing, construction, and verification.

Fact sheet describing protocols for detecting, addressing, and preventing water leaks in homes, covering pressure-loss testing, visual inspections, and specific leak tests for fixtures and appliances.

Fact sheet describing how to effectively build, implement, and verify leak detection and flow monitoring systems, detailing appropriate devices, installation procedures, and verification protocols.

This fact sheet describes the requirements for WaterSense labeled showerheads in, highlighting their water-saving capabilities, adherence to flow rate criteria, independent performance certification, and how they're built, verified and in alignment with the conservation and water management goals of...

This fact sheet outlines the mandatory inclusion of WaterSense labeled toilets in homes, highlighting their water-efficient features, certified performance, and leak prevention; The sheet describes the requirements for these features, steps to build, and steps to verify a labeled toilet to insure...

Fact sheet describing the importance and regulation of EPA WaterSense water softeners including the function of cation exchange water softeners, the importance of salt efficiency, the negative impact of hard water on household appliances, softeners that use demand-initiated regeneration with...

Brochure providing information for homeowners, builders, verifiers, and facilities including an overview of program criteria, the certification process, and EPA-approved home certification organizations for water-efficient homes under the U.S. Environmental Protection Agency's (EPA's) WaterSense...

Website providing a description of the WaterSense labeled homes program and a checklist of mandatory requirements for homes to be labeled under the U.S. Environmental Protection Agency's (EPA's) WaterSense program, Version 2.0.

Resource that provides a checklist of program criteria for water-efficient new homes under the U.S. Environmental Protection Agency’s (EPA’s) WaterSense program.

Guide designed to help builders better understand and meet the hot water delivery system criteria as specified in EPA's WaterSense New Home Specification.

Webpage describing specification requirements including checklist that establishes the criteria for water-efficient homes under the U.S. Environmental Protection Agency's (EPA's) WaterSense program.

Report evaluating performance/efficiency of central heat pump water heaters and quality assurance/quality control processes in system startup, operation and efficiency program participation.

Wepage providing information on ENERGY STAR certified gas tankless water heaters with information on how they cut water heating expenses as well as a product finder tool to find ENERGY STAR certified products.

Report describing work conducted by the Building Science Corporation (BSC) Building America Research Teams Energy Efficient Housing Research Partnerships project.

Article about one way to deal with the cold-water surprise effect of tankless water heaters.

Report describing the design and construction of a highly energy efficient community of ten duplexes in Greenfield, Massachusetts.