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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.

Author(s): Air-Conditioning Heating and Refrigeration Institute
Organization(s): Air-Conditioning Heating and Refrigeration Institute
Publication Date: April, 2009
This directory contains the I=B=R Ratings for cast-iron, steel, aluminum and copper boilers, baseboard and finned tube radiation, indirect-fired water heaters, effective as of the date of this publication.
Author(s): Rudd
Organization(s): Building Science Corporation, National Renewable Energy Laboratory
Publication Date: August, 2012

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.

Author(s): Butcher
Organization(s): ASHRAE
Publication Date: December, 2011
Article investigating how a linear input/output relationship can be used as a simple model of the performance of a combination hydronic heating system over heating only, DHW only, and combined loads.
Author(s): Schoenbauer, Bohac, Huelman, Olson, Hewett
Organization(s): NorthernSTAR, National Renewable Energy Laboratory
Publication Date: October, 2012

Report presenting results of a laboratory experiment studying combi systems as a mode to eliminate safety issues associated with natural draft appliances.

Author(s): Schoenbauer, Bohac, McAlpine, Hewett
Organization(s): NorthernSTAR, University of Minnesota
Publication Date: June, 2017

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 condensing appliances. The system's...