Phased Retrofits in Existing Homes in Florida Phase II: Shallow Plus Retrofits

Stacey Rothgeb, K. Sutherland, D. Parker, E. Martin, D. Chasar, B. Amos, Stacey Rothgeb (NREL Technical Monitor)

Research output: NRELSubcontract Report


Originally published in February 2016, this revision contains an added section called 'Evaluation of Complete Central System Replacement with Inverter-Driven Heat Pump,' which presents the designs and energy savings evaluations of two different schemes wherein inverter-driven systems replaced a home's existing central system. Analyses for three additional retrofit measures were bolstered by longer-term data; these are described in the sections on supplemental mini-split heat pumps (MSHPs), smart thermostats, and heat pump clothes dryers. The sections on supplemental MSHPs and smart thermostats were also enhanced with larger sample sizes and projections of weather-normalized annual energy savings. Finally, peak system hour energy demand-reduction predictions are provided for all retrofit measures where meaningful impacts could be drawn.
Original languageAmerican English
Number of pages172
StatePublished - 2016

Bibliographical note

Work performed by Building America Partnership for Improved Residential Construction, Cocoa, Florida

NREL Publication Number

  • NREL/SR-5500-67009

Other Report Number

  • DOE/GO-102016-4927


  • Building America Program
  • inverter-driven systems
  • mini-split heat pump
  • residential
  • retrofit


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