Sonoma House: Monitoring of the First U.S. Passive House Retrofit

Research output: NRELSubcontract Report


The Sonoma Deep Retrofit is a single-story deep retrofit project in the marine climate of Sonoma, California. The design was guided by Passive House principles which promote the use of very high levels of wall, ceiling, and floor insulation along with tight envelope construction to maintain a comfortable indoor environment with little or no need for conventional heating or cooling.
Original languageAmerican English
Number of pages51
StatePublished - 2012

Bibliographical note

Work performed by Alliance for Residential Building Innovation, Davis, California

NREL Publication Number

  • NREL/SR-5500-55218

Other Report Number

  • DOE/GO-102012-3632


  • arbi
  • Building America
  • deep energy enclosure retrofits (DER)
  • ductless mini-split heat pump
  • existing homes
  • high-R value enclosures
  • marine
  • passive house
  • residential buildings
  • solar thermal
  • space conditioning
  • space cooling
  • space heating
  • tankless water heaters


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