Strategy Guideline: Energy Retrofits for Low-Rise Multifamily Buildings in Cold Climates

Research output: NRELSubcontract Report


This Strategy Guideline explains the benefits of evaluating and identifying energy efficiency retrofit measures that could be made during renovation and maintenance of multifamily buildings. It focuses on low-rise multifamily structures (three or fewer stories) in a cold climate. These benefits lie primarily in reduced energy use, lower operating and maintenance costs, improved durability of thestructure, and increased occupant comfort. This guideline focuses on retrofit measures for roof repair or replacement, exterior wall repair or gut rehab, and eating system maintenance. All buildings are assumed to have a flat ceiling and a trussed roof, wood- or steel-framed exterior walls, and one or more single or staged boilers. Estimated energy savings realized from the retrofits will vary,depending on the size and condition of the building, the extent of efficiency improvements, the efficiency of the heating equipment, the cost and type of fuel, and the climate location.
Original languageAmerican English
Number of pages42
StatePublished - 2013

Bibliographical note

Work performed by IBACOS, Pittsburgh, Pennsylvania and Vermont Energy Investment Corporation, Burlington, Vermont

NREL Publication Number

  • NREL/SR-5500-57206

Other Report Number

  • DOE/GO-102013-3838


  • Building America
  • EE
  • energy efficiency
  • gut rehab
  • low-rise
  • multifamily buildings
  • residential
  • residential buildings


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