Proven Performance of Seven Cold Climate Deep Retrofit Homes

Research output: NRELSubcontract Report


Seven test homes located in Massachusetts are examined within this report. The retrofit strategies of each home are presented along with a comparison of the pre- and post-retrofit airtightness achieved by the group. Pre- and post-retrofit utility bills were collected; energy models were used to estimate pre-retrofit energy use when bills were unavailable.
Original languageAmerican English
Number of pages97
StatePublished - 2012

Bibliographical note

Work performed by Building Science Corporation (BSC), Somerville, Massachusetts

NREL Publication Number

  • NREL/SR-5500-54205

Other Report Number

  • DOE/GO-102012-3529


  • airtightness
  • building enclosures
  • deep energy enclosure retrofits (DER)
  • energy modeling
  • incentives
  • infiltration
  • national grid
  • occupant satisfaction
  • project database
  • PV systems
  • source energy
  • utility bills


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