Residential Prototype Building Models

The Pacific Northwest National Laboratory (PNNL) simulates energy savings associated with changes in energy codes and standards. This analysis is used by the U.S. Department of Energy's Building Energy Codes Program to evaluate published versions of the code, as well as in developing proposed code changes. For residential buildings, PNNL uses two base prototypes to simulate the following building types:

  1. Single-family detached house
  2. Multi-family low-rise apartment building

These prototypes are then modified to accommodate four different heating system types and four foundation types typically found in new residential construction. The result is an expanded set of 32 models, which is then simulated across 16 climate locations for each edition of the International Energy Conservation Code (IECC). This combination results in a set of 2,800 residential energy models (in EnergyPlus™ Version 8.6).

The energy models for the 2006, 2009, 2012, 2015 and 2018 editions of the IECC are listed in Table 1. Each compressed (.zip) file includes EnergyPlus model input files (.idf) and corresponding output files (.htm) for each of the eight climate zones (1-8) and three moisture regimes (A=Moist, B=Dry, C=Marine) defined in the IECC.

Each file is assigned a unique name using the following naming convention:

Where,

XX = Prototype, either Multi-family (MF) or Single-family (SF)
CZ = Climate zone designator (e.g., CZ2B for climate zone 2, moisture regime B; CZ1AT for climate zone 1, moisture regime A, Tropical)
WeatherFile = Name of TMY3 weather file
HeatingSystemType = One of four heating system types: Electric Resistance, Gas Furnace, Oil Furnace or Heat Pump
FoundationType = One of four Foundation types: slab, crawlspace, heated basement, unheated basement
IECC = International Energy Conservation Code
Year= Year of published Code

Downloads

The energy models for the 2006, 2009, 2012, 2015 and 2018 versions of the IECC listed in the table may be downloaded either by specific IECC edition or as a complete set. The idf files may be opened and modified in EnergyPlus or using the OpenStudio plugin for Trimble SketchUp.

Table 1. Residential Prototype Building Models by Climate Zone
Zone/Regime Complete Set 2006 IECC 2009 IECC 2012 IECC 2015 IECC 2018 IECC
1A ZIP ZIP ZIP ZIP ZIP ZIP
2A ZIP ZIP ZIP ZIP ZIP ZIP
2B ZIP ZIP ZIP ZIP ZIP ZIP
3A ZIP ZIP ZIP ZIP ZIP ZIP
3B ZIP ZIP ZIP ZIP ZIP ZIP
3C ZIP ZIP ZIP ZIP ZIP ZIP
4A ZIP ZIP ZIP ZIP ZIP ZIP
4B ZIP ZIP ZIP ZIP ZIP ZIP
4C ZIP ZIP ZIP ZIP ZIP ZIP
5A ZIP ZIP ZIP ZIP ZIP ZIP
5B ZIP ZIP ZIP ZIP ZIP ZIP
6A ZIP ZIP ZIP ZIP ZIP ZIP
6B ZIP ZIP ZIP ZIP ZIP ZIP
7 ZIP ZIP ZIP ZIP ZIP ZIP
8 ZIP ZIP ZIP ZIP ZIP ZIP

Note: State prototype model files may be available upon request.

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UNITED STATES DEPARTMENT OF ENERGY
under Contract DE-AC05-76RL01830