Skip to main content

Library

This library contains research reports produced by the Building America program and other building science resources used to support this Solution Center. The materials cover both new construction and existing homes. Use the search box and/or the filters to explore hundreds of residential building resources. Access to some references not produced by Building America may require purchase from the publisher. Documents are listed alphabetically. While we continually update our database, links may have changed since posting. Please contact our webmaster if you find broken links.

Showing results 1 - 50 of 72

2023 (2020) Standard for Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment, AHRI Standard 210/240

Author(s)
Air-Conditioning Heating and Refrigeration Institute
Organization(s)
AHRI
Publication Date
Performance rating standards for unitary air-conditioners and unitary air-source heat pumps, including definitions, classifications, testing, rating, and operating requirements, as well as minimum data requirements for published ratings and markings.

Air Source Heat Pumps Tax Credit

Author(s)
ENERGY STAR
Organization(s)
ENERGY STAR,
U.S. Environmental Protection Agency,
EPA
Publication Date
This is a federal tax credit for complying air source heat pumpe. Units located in the "North" must meet ENERGY STAR's cold climate heat pump criteria.

Air-Source Heat Pump Sizing and Selection Guide

Author(s)
Strack Terry,
Sager Jeremy
Organization(s)
Natural Resources Canada,
NRC,
CanmetENERGY
Publication Date
Document providing step-by-step guidance to sizing air-source heat pumps for a cold climate.

Air-Source Heat Pumps

Author(s)
U.S. Environmental Protection Agency
Organization(s)
ENERGY STAR,
EPA
Publication Date
Webpage describing the functionality and benefits of switching to Air Source Heat Pumps, as well as linking to sets of products, rebates, most efficient ASHPs, and providing consumer aid for purchasing an ASHP.

An In-Depth Look at Ground Source Heat Pumps and Other Electric Loads in Two GreenMax Homes

Author(s)
Shapiro Carl,
Puttagunta Srikanth
Organization(s)
Consortium for Advanced Residential Buildings,
CARB,
Steven Winter Associates,
SWA,
National Renewable Energy Laboratory,
NREL
Publication Date
Report about two test home evaluations that provided valuable data about the true in-field performance of various building mechanical systems and LAMELs.

CEE Residential Product Directory

Author(s)
Consortium for Energy Efficiency; Air-Conditioning,
Heating,
and Refrigeration Institute
Organization(s)
CEE; AHRI
Publication Date
AHRI-hosted directory of residential products meeting CEE's highest tier

Cold Climate Air Source Heat Pump Specification, Version 4.0

Author(s)
Northeast Energy Efficiency Partnerships
Organization(s)
NEEP
Publication Date
Specification defining performance and reporting requirements to meet the voluntary “Cold Climate Air Source Heat Pump Specification” (ccASHP Specification) for air source heat pumps suited to heat efficiently in cold climates (IECC cz 4 and higher).

Cold Climate DHP Specification

Author(s)
Northwest Energy Efficiency Alliance
Organization(s)
NEEA
Publication Date
Webpage outlining how to optimize the installations and performance of mini-split heat pump systems. As well, it discusses a set of design considerations for multi-level homes, low load homes, and heat distribution to rooms without a heat source.

Directory of Certified Product Performance

Author(s)
Air-Conditioning Heating and Refrigeration Institute
Organization(s)
AHRI
Publication Date
Online database with efficiency information about residential HVAC systems and commercial refrigeration equipment.

Ductless Heat Pump Project

Author(s)
Northwest Energy Efficiency Alliance
Organization(s)
NEEA
Publication Date
Webpage describing the successes and ongoing efforts of the Northwest Energy Efficiency Alliance's Go Ductless ductless heat pump program which successfully encouraged the installation of more than 150,000 minisplit heat pumps in the Northwest between 2010 and 2021.

Ductless Mini-Split Heat Pump Comfort Evaluation

Author(s)
Roth Kurt,
Sehgal N,
Akers Craig
Organization(s)
Fraunhofer Center for Sustainable Energy Systems,
Fraunhofer CSE,
National Renewable Energy Laboratory,
NREL
Publication Date
Research report with results from field tests in two homes in Austin, Texas, from October 2011 to June 2012 to evaluate the comfort performance of ductless mini-split heat pumps

Efficient Multifamily Homes in a Hot Humid Climate by Atlantic Housing Partners

Author(s)
Chasar Dave,
Martin Eric
Organization(s)
Building America Partnership for Improved Residential Construction,
BA-PIRC,
Florida Solar Energy Center,
FSEC
Publication Date
Report demonstrating how the initiative achieves Building America (BA) goals of 30%-50% energy savings in multifamily dwellings in the hot-humid climate zone.

Energy Savers: Geothermal Heat Pumps

Author(s)
U.S. Department of Energy
Organization(s)
DOE
Publication Date
Online reference containing general information about geothermal heat pumps.

ENERGY STAR Most Efficient 2021 Criteria Development

Author(s)
ENERGY STAR
Organization(s)
ENERGY STAR,
U.S. Environmental Protection Agency,
EPA
Publication Date
Webpage recognizing the most efficient products among those that are ENERGY STAR certified.

ENERGY STAR® Certified Mini Split Heat Pumps

Author(s)
ENERGY STAR
Organization(s)
U.S. Environmental Protection Agency,
EPA,
ENERGY STAR
Publication Date
Factsheet describing mini split heat pumps and their benefits for consumers.

Evaluating Moisture Control of Variable-Capacity Heat Pumps in Mechanically Ventilated, Low-Load Homes in Climate Zone 2A

Author(s)
Martin Eric,
McIlvaine Janet E R,
Chasar Dave,
Beal David,
Withers Charles R
Organization(s)
Building America Partnership for Improved Residential Construction,
BA-PIRC,
Florida Solar Energy Center,
FSEC
Publication Date
This report evaluates the performance of variable-capacity comfort systems, with a focus on inverter-driven, variable-capacity systems, as well as proposed system enhancements.

Feasibility of Foundation Heat Exchangers for Residential Ground Source Heat Pump Systems in the United States

Author(s)
Cullin James R,
Xing Lu,
Lee Edwin,
Spitler Jeffrey D,
Fisher Daniel E
Organization(s)
American Society of Heating Refrigerating and Air-Conditioning Engineers,
ASHRAE,
Oklahoma State University,
OSU,
Oak Ridge National Laboratory,
ORNL
Publication Date
Study characterizing how foundation heat exchangers (FHXs) used in residential ground source heat pump systems represent a potential cost savings due to their lesser first cost over other types of heat exchangers.

Field Monitoring Protocol: Mini-Split Heat Pumps

Author(s)
Christensen Dane,
Tomerlin Jeff,
Winkler Jon,
Hancock Ed,
Fang Xia
Organization(s)
National Renewable Energy Laboratory,
NREL,
Mountain Energy Partnership,
U.S. Department of Energy,
DOE
Publication Date
Information sheet with an analysis of mini split heat pump systems.

Geothermal (Ground-Source) Heat Pumps: Market Status, Barriers to Adoption, and Actions to Overcome Barriers

Author(s)
Hughes Patrick J
Organization(s)
Oak Ridge National Laboratory,
ORNL,
U.S. Department of Energy,
DOE
Publication Date
Report investigating the status of the geothermal heat pump (GHP) industry and technology in the United States, assembling GHP energy savings potential, identifying key barriers to application of GHPs, and identifying actions that could accelerate adoption of GHPs.

Geothermal Heat Pumps Key Product Criteria

Author(s)
U.S. Environmental Protection Agency
Organization(s)
EPA,
ENERGY STAR
Publication Date
Website with information about ENERGY STAR criteria for geothermal heat pumps.

Ground Source Heat and Cooling

Author(s)
Seth Masia
Organization(s)
American Solar Energy Society,
ASES
Publication Date
Website article discussing the economics of ground source heat pumps.

Heat & Cool Efficiently

Author(s)
ENERGY STAR
Organization(s)
ENERGY STAR
Publication Date
A ENERGY STAR guide on efficient heating, ventilation and cooling systems in residential homes.

Heat Pump Retrofit Strategies for Multifamily Buildings

Author(s)
Steven Winter Associates,
Natural Resources Defense Council
Organization(s)
SWA,
NRDC
Publication Date
Report describing the various heat pump retrofit options for multifamily buildings in the U.S., segmented by building typology and heating system, to support better environmental, economic, and health outcomes.

Heating and Cooling With a Heat Pump

Author(s)
Natural Resources Canada
Organization(s)
Natural Resources Canada
Publication Date
Report providing information for HVAC designers, installers, and consumers about air source heat pumps.

HVAC – Cold Climate Heat Pump Sizing

Author(s)
Pacific Northwest National Laboratory,
U.S. Department of Energy
Organization(s)
PNNL,
DOE
Publication Date
Webpage providing curriculum with links to presentations and problem sets for teaching an understanding of sizing cold climate heat pumps.

Improved Modeling of Residential Air Conditioners and Heat Pumps for Energy Calculations

Author(s)
Cutler Dylan,
Winkler Jon,
Kruis Neal,
Christensen Craig B,
Brandemuhl Michael J
Organization(s)
National Renewable Energy Laboratory,
NREL,
University of Colorado,
CU
Publication Date
Report presenting improved air conditioner (AC) and heat pump (HP) modeling methods in the context of whole-building simulation tools.

Interaction between Heat Pump Water Heaters or Other Internal Point Source Loads and a Central Heating System

Author(s)
Widder Sarah H,
Metzger Cheryn E,
McIntosh Joshua A,
Petersen Joseph M
Organization(s)
Northwest Energy Efficiency Alliance,
NEEA,
Pacific Northwest National Laboratory,
PNNL
Publication Date
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.

Low-Cost Solar Water Heating Research and Development Roadmap

Author(s)
Hudon Kate,
Merrigan Tim,
Burch Jay,
Maguire Jeff
Organization(s)
National Renewable Energy Laboratory,
NREL
Publication Date
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.