U.S. Department of EnergyOffice of Scientific and Technical Information
A Meta-Analysis of Single-Family Deep Energy Retrofit Performance in the U.S.
Abstract
The current state of Deep Energy Retrofit (DER) performance in the U.S. has been assessed in 116 homes in the United States, using actual and simulated data gathered from the available domestic literature. Substantial airtightness reductions averaging 63% (n=48) were reported (two- to three-times more than in conventional retrofits), with average post-retrofit airtightness of 4.7 Air Changes per House at 50 Pascal (ACH50) (n=94). Yet, mechanical ventilation was not installed consistently. In order to avoid indoor air quality (IAQ) issues, all future DERs should comply with ASHRAE 62.2-2013 requirements or equivalent. Projects generally achieved good energy results, with average annual net-site and net-source energy savings of 47%±20% and 45%±24% (n=57 and n=35), respectively, and carbon emission reductions of 47%±22% (n=23). Net-energy reductions did not vary reliably with house age, airtightness, or reported project costs, but pre-retrofit energy usage was correlated with total reductions (MMBtu).
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office
- OSTI Identifier:
- 1220537
- Report Number(s):
- LBNL-6601
7157
- DOE Contract Number:
- AC02-05CH11231
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- lbnl, deep energy retrofit,
Citation Formats
Less, Brennan, and Walker, Iain. A Meta-Analysis of Single-Family Deep Energy Retrofit Performance in the U.S.. United States: N. p., 2014.
Web. doi:10.2172/1220537.
Less, Brennan, & Walker, Iain. A Meta-Analysis of Single-Family Deep Energy Retrofit Performance in the U.S.. United States. https://doi.org/10.2172/1220537
Less, Brennan, and Walker, Iain. 2014.
"A Meta-Analysis of Single-Family Deep Energy Retrofit Performance in the U.S.". United States. https://doi.org/10.2172/1220537. https://www.osti.gov/servlets/purl/1220537.
@article{osti_1220537,
title = {A Meta-Analysis of Single-Family Deep Energy Retrofit Performance in the U.S.},
author = {Less, Brennan and Walker, Iain},
abstractNote = {The current state of Deep Energy Retrofit (DER) performance in the U.S. has been assessed in 116 homes in the United States, using actual and simulated data gathered from the available domestic literature. Substantial airtightness reductions averaging 63% (n=48) were reported (two- to three-times more than in conventional retrofits), with average post-retrofit airtightness of 4.7 Air Changes per House at 50 Pascal (ACH50) (n=94). Yet, mechanical ventilation was not installed consistently. In order to avoid indoor air quality (IAQ) issues, all future DERs should comply with ASHRAE 62.2-2013 requirements or equivalent. Projects generally achieved good energy results, with average annual net-site and net-source energy savings of 47%±20% and 45%±24% (n=57 and n=35), respectively, and carbon emission reductions of 47%±22% (n=23). Net-energy reductions did not vary reliably with house age, airtightness, or reported project costs, but pre-retrofit energy usage was correlated with total reductions (MMBtu).},
doi = {10.2172/1220537},
url = {https://www.osti.gov/biblio/1220537},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 01 00:00:00 EDT 2014},
month = {Fri Aug 01 00:00:00 EDT 2014}
}