Library

Report describing information from DOE about rules and standards for residential air conditioners and heat pumps.

Webpage describing a DOE Cold Climate Heat Pump Challenge. The challenge engages industry partners and focuses around the Cold Climate Heat Pumps, a more environmental and efficient heating alternative to traditional heating.

Paper covering a parametric study of foundation heat exchanger-based ground source heat pump systems for several house configurations in a range of European locations, with an emphasis on determining feasible combinations.

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.

U.S. DOE report summarizing findings from literature and research relevant to HVAC installation practices.

Report describing research efforts focused on examining the audit reports for quality, comprehensiveness, and consistency.

Report about a tool developed to enable users to compare a typical 1970s ranch home against an IECC 2009 code-compliant home of the same configuration and against the 70s base case plus retrofits.

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...

Information sheet describing solar PV upgrade for an existing homes.

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

Information sheet describing solar hot water systems in existing homes.

Information sheet about envelope and roof moisture control retrofit for a home.

Article explaining the energy cost reduction and other benefits associated with installing a heat pump clothes dryer

Technical study exploring the impact of different installation faults on heat pump performance in a single-family house.

Report summarizing commissioning, short-term testing, and analysis that occurred before, during, and just after the actual retrofit of the Bay Ridge project.

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.

Paper describing the development and testing of an affordable net-zero energy house in Lenoir City, Tennessee.

Webpage describing the STEP campaign encouraging the use of smart diagnostic tools to reduce installation faults.

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

Research study presenting a unique opportunity to both identify and evaluate deep retrofit measures that are practical and potentially cost effective for the retrofit market, as well as review the cost effectiveness of the Passive House design approach for achieving energy savings in deep retrofits.

Report providing information based on research and case studies, to remodelers and consumers about opportunities to increase home energy performance.

Document identifying differences between the requirements for construction documents for high performance housing and the documents that are typically produced for conventional housing.

Report intending to provide useful information as the DOE/BA develops and implements comprehensive communications and outreach strategies for demonstration homes.

Report describing the equipment selection of a split system air conditioner and furnace for an example house in Chicago, Illinois, as well as a heat pump system for an example house in Orlando, Florida.

Document serving as a starting point that features initial tools and resources for teams to start collaborating to continually improve the energy efficiency and durability of new houses.

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.

Research study providing a comparison of selected retrofit activity typically done, versus that same retrofit activity approached from an integrated high performance remodeling and quality management perspective.

A research paper discussing the use of foundation heat exchangers for ground source heat pump systems in European climates.

Research study determining how well high performance envelope and innovative cooling system interact to cost effectively reduce cooling energy use in this hot-dry climate.

Research study making several recommendations to whole-home program designers and implementers for improving the cost effectiveness and reach of whole-home programs.

Question and Answer article in Energy Design Update describing the cost and savings benefits of electronically commutated motors (ECMs) for HVAC equipment.

Report providing performance results of a home's heat pump water heater and whole-house dehumidifier over a six-month period.

Report evaluating a test home built in Atlanta, GA in the mixed-humid climate zone. The report outlines the features of the house, discusses the implementation of the energy efficient design, and presents the results of short-term characterization testing.

Document about laboratory testing of five integrated heat pump water heaters (HPWH).

This guide and workbook offers practitioners with the knowledge to properly implement the measurement and documentation procedures required in the ANSI/ACCA 5.

Report using data from various sources to characterize the impact on human health and property damage from indoor environmental quality and other hazards.

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...

Report developed for Habitat for Humanity about lessons learned from demonstration retrofit projects undertaken by Habitat for Humanity affiliates in New York, Maryland, and Pennsylvania; with building systems consulting and technical assistance provided by Steven Winter Associates.

Report presenting results from whole-house monitoring efforts in hope that they may be useful for others moving towards zero energy homes.

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

Case study about affordable housing in a mixed, humid climate.

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.

Users guide to help contractors and homeowners use the Cold Climate Heat Pump Sizing Support Tools developed by NEEP to size and select the best air source heat pumps for their cold climate location.

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

Fact sheet describing four different efficient hot water delivery (HWD) systems, the trunk-and branch, core, whole-house manifold, and recirculation, with emphasis on system schematics, piping materials, and regulations to design and verify the systems.

Webpage describing how to flashing installation

Webinar presenting best practices in HVAC design and commissioning

Information sheet discussing the differences between homeowner energy consumption trends in highly efficient homes.

Conference paper presented at the 2020 Summer Study on Energy Efficiency in Buildings presenting the results of an evaluation of control strategies used when new mini-splits are installed in a home with an existing HVAC system.

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