Library

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.

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

Brochure describing advanced framing techniques.

Article from NREL on wall construction guidelines for homes in hot climate zones.

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

Report containing 37 fact sheets that provide technical guidance and recommendations concerning the construction of coastal residential buildings.

A guide that summarizes building materials and design considerations for increasing wildfire-resistivity of homes in areas that are prone to wildfires.

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.

A starting point for ballparking and comparing the cost of different siding materials and a brief overview of the pros and cons of different siding materials.

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

Article describing how omission of two small but critical wall details, a kick-out flashing and a weep screed, lead to extensive water damage to a wall.

Factsheet describing proper methods for installing vinyl siding and soffit coverings in high wind and coastal areas.

Checklist for verifying FORTIFIED levels and documentation needed.

A structural insulated panel (SIP) roof has no embedded lumber in the structure, and therefore nothing substantial for attaching PV array and solar hot water mounts. Single or double lumber splines could be put into the panels, or I-joists at 4-foot intervals could be added.

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.

Wildfire guidance for homes located in the wildland urban interface, focused on site design and individual pieces of the home.

Ignition resistant residential construction and landscaping guidelines from FireSafe Montana.

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.

An impact test report from projectile missile tests against brick veneer, verifying that brick veneers perform well to resisting hurricane force wind driven debris.

Site showing flame spread ratings and definitions for common building materials.

Article from Building Science Corporation explaining 'wash and wear buildings' that are designed to be flooded and washed out afterwards.

PDF detailing the inspection and verification guidance for WaterSense labeled new homes including indoor and outdoor efficiency requirements, and homeowner and building management education.

Report providing general guidelines for the installation of rolled erosion control products.

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...

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...

EPA’s 2008 Lead-Based Paint Renovation, Repair and Painting (RRP) Rule (as amended in 2010 and 2011), aims to protect the public from lead-based paint hazards associated with renovation, repair and painting activities.

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.

This webpage provides an interactive walk-through of the installation of a heat pump water heater in a home in Maine, 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 installation...

Webpage featuring hundreds of illustrations of masonry construction details for brick, congrete, stone, tile, stucco, etc.

Guidebook providing useful examples of high performance retrofit techniques for the building enclosure of wood frame residential construction in a cold and somewhat wet climate.

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.

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.

FEMA mitigation assessment team report following Hurricane Charley in Florida including observations, recommendations, and technical guidance for retrofitting hurricane-damaged homes.

FEMA mitigation assessment team report following Hurricane Ivan in Florida and Alabama including observations, recommendations, and technical guidance.

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

EPA guidance document providing information on moisture control in buildings.

Brochure discussing specific practices for mitigating moisture and mold during the construction process.

Online course describing mold and mold remediation for environmental and public health professionals.