Library

Table calculating friction losses of PVC pipe fittings.

Table calculating friction losses for PVC pipe by length.

DOE case study findings on raised ceiling interior duct systems.

Document with important building science considerations, designed for members of the residential construction and remodeling industries, as well as owners and managers who work in affordable housing.

Field manual describing measures to reduce potential hazards and damages caused by and to nonstructural components of a building such as HVAC, appliances, lighting, windows, and furniture during an earthquake.

Report including an overview of the buried duct research and information the retrofit methodology used to install and test the three existing duct systems, including short- and long-term data collection.

Document presenting results from testing prototype HVAC duct system designs that would locate the entire length of duct work within the air and thermal barriers of the building envelope. These include one that incorporated a high-side supply register, one that utilized a single soffit located within...

Presentation providing information about correctly installing ductwork in new and existing homes.

Report proposes high performance duct measures for inclusion in California Title 24 building energy efficiency standards for 2016.

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

Research study about a high performance retrofit of an existing brick building (a former convent) into condominiums, all affordable housing.

Report describing procedures for increasing sensible efficiencies through increased flow rates across the air handling unit and increased indoor coil sizes.

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 cost effective energy-efficient upgrades that can be implemented in the hot, dry Southwest climate.

Article from the Institute of Biological Engineering describing reverse osmosis water softeners.

Document reviewing current and potential ventilation technologies for residential buildings with particular emphasis on North American climates and construction.

Article describing how insulating and air sealing unfinished attic spaces can lead to reduced energy bills in some homes.

Factsheet describing air-sealing.

Report describing development of a package of energy efficiency measures to achieve 60% energy savings in a test house.

Website with consumer information about duct cleaning.

Manual that identifies certain leakage limits for ducts and outlines procedures for testing ducts for conformity with air leakage limits that are set forth in a designer’s project specification.

Fact sheet describing building envelope performance measures applicable to residential and small commercial construction.

This Standard provides a consistent, uniform methodology for evaluating the airtightness of building envelopes and heating and cooling air ducts and the air flows of mechanical ventilation systems.

Report addressing barriers to information, contractor resources and cost savings associated with steam balancing multifamily buildings.

Information sheet about buried ducts.

Report about the impact on the loads when common safety factors are applied to the load calculation process using two houses that meet the 2009 IECC prescriptive path modeled as the accurate baseline.

Document covering the pros and cons of compact air distribution systems and the decision criteria that must be considered early in the whole-house design process.

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.

Report describing findings from research related to heating, ventilation, and air conditioning (HVAC) companies that have made the decision to transition to whole house performance contracting (WHPC).

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

Standard providing industry-backed information for assessing new and existing HVAC systems, evaluating and verifying the cleanliness of HVAC system components, preventing job related hazards and guiding the cleaning and restoration of HVAC systems to a specific level of cleanliness.

Information sheet describing transfer ducts and grilles for HVAC.

Guide addressing troubleshooting and frequently asked questions about water pressure.

Article describing water leak detection and modes of testing (video camera inspection, hydrostatic pressure, electronic listening, isolation, and digital testing).

Documents describing Flood Resistant Provisions of codes published by the International Association of Plumbing and Mechanical Officers (IAPMO): the Uniform Mechanical Code; Uniform Plumbing Code; Uniform Swimming Pool, Spa and Hot Tub Code; and Uniform Solar, Hydronics and Geothermal Code (Uniform...

The International Association of Plumbing and Mechanical Officials (IAPMO) has been protecting the public’s health and safety for ninety-three years by working in concert with government and industry to implement comprehensive plumbing and mechanical systems around the world. Main website.

EPA WaterSense guidance on urinals.

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

Information sheet about proper ventilation and air sealing.

Guide providing information on controlling attic ductwork sweating.

Products and specification for a State of California-compliant earthquake-actuated automatic gas shutoff valve.

Report describing filtration, distillation, and disinfection methods of water treatment.

Article describing different types of water softeners and how they work.

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.

Article describing the EPA WaterSense program, process, and benefits.

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.

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.

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...