Library

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.

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

Web resource that lays out the pre-work considerations, methods and finishes for installing mechanical insulation.

This paper discusses model validation using data from three thermosiphon systems.

Book with indepth information about hydronic systems for residential and commercial buildings.

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.

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.

Standard containing requirements for carbon monoxide (CO) detection and warning equipment intended to protect lives by warning occupants of the presence of CO in sufficient time to allow occupants to escape or take other appropriate action.

Report providing information to researchers, utility program managers, and building owners interested in controlling heating energy waste and improving resident comfort.

Article investigating how a linear input/output relationship can be used as a simple model of the performance of a combination hydronic heating system over heating only, DHW only, and combined loads.

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.

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.

Standard covering provisions for electrically operated single- and multiple-station carbon monoxide (CO) alarming devices used in various types of residential occupancies to protect against acute effects of exposure to CO. This version of the standard, originally published in 2001 and revised in...

Standard covering provisions for electrically operated single- and multiple-station carbon monoxide (CO) alarming devices used in various types of residential occupancies to protect against acute effects of exposure to CO. This version of the standard, originally published in 2017 and revised in...

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.

Website with information and research about residential hot water distribution systems.

Brochure with information on residential solar hot water systems.

A retrofit sheet providing information on elevating and securing water heaters to protect against damage during a flood.

Report presenting results of a laboratory experiment studying combi systems as a mode to eliminate safety issues associated with natural draft appliances.

Information sheet describing tankless hot water heating systems in existing homes.

Document discussing changes in testing the annual performance ratings for solar water heaters.

A fact sheet providing homeowners with guidance on properly securing water heaters to prevent them from tipping in an earthquake.

Second part of an article series focusing on servicing high efficiency modcon boilers. This part focuses on paperwork and follow-up communication with the homeowner for scheduling annual maintenance.

Article describing the author's experiences in owning and servicing a modcon boiler.

Report comparing the performance of seven differing types of residential water heating systems in a side-by-side test configuration over a full year period.

Document about testing of seven water heating systems in the Hot Water Systems laboratory in central Florida.

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.

A website providing information on how to properly size a water heater based on tank size, volume, peak hour demand and other factors.

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

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.

This document covers a description of the need and applied solutions for supplemental dehumidification in warm-humid climates, especially for energy efficient homes where the sensible cooling load has been dramatically reduced.

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

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.

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.

Document outlining important safety considerations of ventless fireplaces.

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.

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