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Wrong – Two combustion appliances are sharing a flue which could lead to backdrafting if one appliance is updated to a direct vent appliance and disconnected from shared chimney.

Author(s)

Bohac Dave,

Schoenbauer Ben,

Huelman Patrick H

Organization(s)

University of Minnesota,

UMN,

NothernSTAR,

NSTAR,

U.S. Department of Energy,

DOE

Publication Date

July, 2016

Report describing combined space- and water-heating (combi) systems using a high-efficiency direct-vent burner.

Author(s)

Habitat for Humanity of Metro Denver,

National Renewable Energy Laboratory

Organization(s)

NREL,

Habitat for Humanity of Metro Denver

Publication Date

April, 2008

Case study describing a Habitat for Humanity zero net energy home in Denver.

Guide describing installation procedures for combined space and water heating systems.