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Title: Sealed Crawl Spaces with Integrated Whole-House Ventilation in a Cold Climate

One method of code-compliance for crawlspaces is to seal and insulate the crawlspace, rather than venting to the outdoors. However, codes require mechanical ventilation; either via conditioned supply air from the HVAC system, or a continuous exhaust ventilation strategy. As the CARB's building partner, Ithaca Neighborhood Housing Services, intended to use the unvented crawlspace in a recent development, CARB was interested in investigating a hybrid ventilation method that includes the exhaust air from the crawlspace as a portion of an ASHRAE 62.2 compliant whole-house ventilation strategy. This hybrid ventilation method was evaluated through a series of long-term monitoring tests that observed temperature, humidity, and pressure conditions through the home and crawlspace.
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  1. Consortium for Advanced Residential Buildings, Norwalk, CT (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Technical Report
Research Org:
Consortium for Advanced Residential Buildings, Norwalk, CT (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B)
Country of Publication:
United States
crawlspace; ventilation; whole-house ventilation; exhaust-only ventilation; radon; code compliance; IRC; International Residential Code: ASHRAE 62.2; ASHARAE 62.2-2010; ASHRAE 62.2-2013; tracer gas; SF6; Reciprocal Age of Air; RAoA; CARB; Consortium for Advanced Residential Buildings; SWA; Steven Winter Associates; condensation potential; dewpoint; sealed crawlspace; unvented crawlspace; resident