Library

An engineering design guide for hydronic heat loops, discussing the features and advantages of condensing boilers.

Report describing the in situ performance evaluation of newly released heat pump water heaters (HPWHs), highlighting their energy and cost savings potential compared to conventional electric resistance water heaters and other alternatives, based on data collected from installations in Massachusetts...

A webpage discussing how water heater expansion tanks operate and how to repair them.

Standard that applies to storage water heaters, instantaneous water heaters, and circulating water heaters including booster water heaters; the current version of this standard was published in the year 2019 and it is available for purchase along with a digital preview on the ANSI webstore page.

Brochure on specifications for solar thermal systems.

Report describing the cost-effectiveness and performance of all-electric, zero net energy multifamily buildings in California, detailing technical challenges and providing recommendations for design, construction, codes, standards, and operations to support future projects.

Fact sheet defining a grid-interactive efficient building and its benefits.

Informational guide describing the design, installation, and maintenance best practices and technical considerations for integrated Heat Pump Water Heaters in single-family and multifamily new construction.

Report describing the advantages and best practices for installing heat pump water heaters (HPWH), highlighting their improved energy efficiency, reliability, and critical considerations such as condensate management, proper sizing, and optimal installation location to enhance performance and...

The Heat Pump Water Heater Installation Tool helps contractors, installers, and homeowners through the decision-making process for heat pump water heater (HPWH) product selection and installation, with a focus on overcoming installation barriers.

Report describing the significant potential for energy use reductions through heat pump water heaters, which have been a crucial part of Northwest power plans for decades and have recently achieved substantial savings with new integrated models and climate specifications.

Report describing the features, benefits, and best practices for the design and installation of heat pump water heaters in new low-rise multifamily buildings, highlighting their efficiency, reliability, and contribution to decarbonization goals.

Report describing a laboratory assessment that provides insights into space requirements and venting strategies for heat pump water heaters (HPWH) to enhance retrofit installations and provide actionable guidance for manufacturers, designers, engineers, installers, and owners.

Guide providing detailed selection and installation instructions for heat pump water heaters.

Provides consumers with general information on solar water heating systems and how to select a contractor.

Report discussing the potential energy savings of new high-efficiency downlights, and the results of product testing to date.

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

Best Practices document providing an introduction to current photovoltaic and solar thermal building practices.

Report on a project that enhanced the HWSIM distribution system model to more accurately model pipe heat transfer.

Article describing the factors that can lead to inefficient hot water distribution systems in homes.

Guide describing how to choose energy-efficient water heaters, including heat pump models, with tips on installation, rebates, and incentives for maximizing energy savings.

ENERGY STAR webpage describing how a heat pump water heater works.

Report describing the identification of barriers and proposed practical solutions for the design, installation, and market adoption of heat pump water heaters in new low-rise multifamily housing, focusing on studio and one-bedroom units.

Journal article presenting modeling of residential gas water heaters via dynamic simulation models to determine the effect of the pilot light on their annual energy consumption.

Report providing information about techniques and approaches to improve the efficiency of recessed lighting.

Report describing the performance, economics, space heating impacts, and user satisfaction of heat pump water heaters (HPWHs) in the upper Midwest, based on a field study and survey of participants in the MECA HPWH incentive program.

Fact sheet describing principles of insulating steam distribution and condensate return lines as an effective way to prevent energy loss.

Report describing the objective evaluation of space conditioning interactions between heat pump water heaters and home heating systems during winter 2016-2017, revealing a smaller than anticipated impact on space conditioning loads.

This webpage provides an interactive walk-through of the installation of a heat pump water heater in a home in Massachusetts, including how-to videos of the installation, video interviews with the homeowners, installer, and utility program partners, and visual tours of the home before and after...

Video course by the Lighting Controls Association presenting an overview of the basic functionality of today’s lighting controls, benefits and the basic questions to ask when identifying an appropriate lighting control strategy

Article discussing the downside to recessed can lights.

Report summarizing results of testing emerging combo water heating technologies under controlled laboratory operations, that differentiate the performance of the various packaged equipment configurations being offered.

Report describing research conducted to support California’s Title 24, Part 6 Building Energy Efficiency Standards by analyzing the impact of installation location and ventilation on heat pump water heater (HPWH) performance, emphasizing the need for proper installation to maximize efficiency...

A website explaining the measurement of light bulbs, measurable in lumens, & brightness levels that ENERGY STAR products produce.

A website explaining the basics of LED lightning, their lifespan, their use in general lighting applications, the amount of heat produced, and why you should choose ENERGY STAR certified LED products for your home.

Information about LED lighting technology.

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

Webpage describing a lightbulb exchange program in Fairfax county, VA.

The light-emitting diode (LED) is one of today's most energy-efficient and rapidly-developing lighting technologies.

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.

American Lighting Association website homepage.

Webpage describing high-efficiency lighting choices for homeowners including LEDs, CFLs, and halogen bulbs.

A website exploring the use of lighting controls products like dimmers, motion sensors and timers to save energy in the home.

Presentation detailing key challenges with lighting controls, best practices for the design and implementation of lighting controls, and best approaches for return on controls.

Link for the webpage of the Lighting Controls Association, an industry organization dedicated to supporting adoption of advanced lighting controls in commercial buildings through education. Their webpage contains a variety of resources regarding advanced lighting controls.

Webpage for the Lighting Design Lab (LDL), an organization which provides educational resources regarding advanced lighting controls and other electric building technologies.

A website explaining basic lighting principles and terms & how they are applied to the 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.

A website explaining lumens & how to compare the amount of light that lightbulbs can produce when shopping for replacements.