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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.

Combined water and space heater using tankless water heater

Publication Date

Fri, 07/01/2016 - 12:00

Combined water and space heater using combi boiler

Publication Date

Fri, 07/01/2016 - 12:00

Combustion Appliance Zone (CAZ) Testing

Guide describing how to conduct combustion appliance zone testing.

Combined Space and Water Heating: Next Steps to Improved Performance

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.

The Habitat for Humanity of Metro Denver Zero Energy Demonstration Home

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.

Gas-Fired Tankless Water Heaters

Guide describing the installation of a tankless hot water heater to provide domestic hot water that is heated on demand without the standby losses associated with tank storage water heaters.

Integrated Heating and Hot Water with Tankless Gas or Electric Water Heating

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

Drain Back – Solar Hot Water

Guide describing basic steps for designing a drainback solar hot water system.

Heat Pump Water Heaters for Single-Family Homes

Guide describing the planning and installation process for Heat Pump Water Heaters (HPWHs) in single-family homes, including model selection, installation location, thermal resource adequacy, and condensate removal.

Heat Pump Water Heaters - Code Compliance Brief

Publication Date

November, 2017

Applicable codes and standards regarding heat pump water heaters (HPWHs) that are an energy-efficient alternative to electric resistance water heaters.