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Title: Measure Guideline: Buried and/or Encapsulated Ducts

Buried and/or encapsulated ducts (BEDs) are a class of advanced, energy-efficiency strategies intended to address the significant ductwork thermal losses associated with ducts installed in unconditioned attics. BEDs are ducts installed in unconditioned attics that are covered in loose-fill insulation and/or encapsulated in closed cell polyurethane spray foam insulation. This Measure Guideline covers the technical aspects of BEDs as well as the advantages, disadvantages, and risks of BEDs compared to other alternative strategies. This guideline also provides detailed guidance on installation of BEDs strategies in new and existing homes through step-by-step installation procedures. Some of the procedures presented here, however, require specialized equipment or expertise. In addition, some alterations to duct systems may require a specialized license.
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  1. Consortium for Advanced Residential Buildings (CARB), Norwalk, CT (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
AC36-08GO28308; KNDJ-0-40342-03
Resource Type:
Technical Report
Research Org:
Consortium for Advanced Residential Buildings (CARB), Norwalk, CT (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B) (Building America)
Country of Publication:
United States
ductwork; buried; encapsulated; condensate; attics; thermal losses; duct leakage; residential; residential building; Consortium for Advanced Residential Buildings (CARB); Building America