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Explore this extensive library of building science guidance including research reports from DOE’s Building America program as well as hundreds of other articles, fact sheets, webpages, and reference documents related to constructing and renovating homes.

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Retrofitting Forced Air Combi Systems: A Cold Climate Field Assessment

Publication Date
·
Author(s)
McAlpine Jake,
et al.
·
Organization(s)
NorthernSTAR Building America Partnership,
NorthernSTAR,
University of Minnesota,
UMIN
Description
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...