Mini-Split Heat Pumps Multifamily Retrofit Feasibility Study

Research output: NRELSubcontract Report


Mini-split heat pumps can provide space heating and cooling in many climates and are relatively affordable. These and other features make them potentially suitable for retrofitting into multifamily buildings in cold climates to replace electric resistance heating or other outmoded heating systems. This report investigates the suitability of mini-split heat pumps for multifamily retrofits. Varioustechnical and regulatory barriers are discussed and modeling was performed to compare long-term costs of substituting mini-splits for a variety of other heating and cooling options. A number of utility programs have retrofit mini-splits in both single family and multifamily residences. Two such multifamily programs are discussed in detail.
Original languageAmerican English
Number of pages45
StatePublished - 2014

Bibliographical note

Work performed by Advanced Residential Integrated Energy Solutions (ARIES) Collaborative, New York, New York

NREL Publication Number

  • NREL/SR-5500-61620

Other Report Number

  • DOE/GO-102014-4402


  • air source heat pumps
  • Building America
  • heating systems
  • mini-split heat pumps (MSHP)
  • multifamily
  • residential
  • residential buildings
  • retrofit


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