Report Number




Buildings; EnergyGauge


EnergyGauge USA v.3.1.02 is used examine the impact of geometry and operating conditions on comparative simulation analysis techniques that are used to evaluate home energy performance with respect to a standardized reference case. A cohort of homes is simulated using the HERS Index scoring system in 15 U.S. cities that are representative of the 8 International Energy Conservation Code (IECC) climate zones. All of the homes are configured to have the thermal envelope characteristics specified by Table R402.1.1 of the 2012 IECC. All homes are also configured to meet all other mandatory requirements of the 2012 IECC, including 75% high efficiency lighting, insulated hot water piping, programmable thermostats and sealed air handlers. In addition, all homes have envelope leakage as specified by Section R402.4.1.2 of the 2012 IECC and are mechanically ventilated in accordance with the requirements of ASHRAE 62.2-2013.

The cohort of homes is configured as 2-story homes with 1200, 1800, 2400, 3600, 4800 and 7200 square feet of conditioned floor area. The 2400 ft2 home is also configured as a 1-story and a 3-story prototype. The 2-story, 2400 ft2 home is also configured to have from 1 to 6 bedrooms. Thus, a total of 13 different home geometry and operating condition configurations are simulated in 15 different cities. Results of the simulations are analyzed to determine the geometry and operating condition dependencies of the comparative simulation analysis procedures specified by the RESNET Standards.

Date Published



Buildings - EnergyGauge



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