Technology Case Studies: Retrofit Integrated Space and Water Heating - Field Assessment

Program Document · Thu May 01 00:00:00 EDT 2014

OSTI ID:1220945

Better insulation and tighter envelopes are reducing space heating loads for new and existing homes. For many homes, decreased space heating loads make it possible for both space and domestic water heating loads to be provided with a single heating plant. This project analyzed combined condensing water heaters or boilers and hydronic air coils to provide high efficiency domestic hot water and forced air space heating. Called 'Combi' systems, they provided similar space and water heating performance less expensively than installing two condensing appliances. These systems can also eliminate safety issues associated with natural draft appliances through the use of one common sealed combustion vent.

• Research Organization: NorthernSTAR Building America Partnership
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B) (Building America)
• OSTI ID: 1220945
• Report Number(s): DOE/GO-102014-4379; 6797
• Country of Publication: United States
• Language: English

Related Subjects

residential
Residential Buildings
NorthernSTAR
Building America
combi heating systems
forced air combi systems
hydronic air handlers
boiler based combi systems
tankless water heater based combi systems
storage water heater based combi systems
DHW performance
combi system summer efficiency
dual integrated appliances
direct vent burner