MODEL

is a single floor plan of a dwelling unit design. To be considered the same model; dwelling units shall be in the same subdivision or multifamily housing development and have the same energy designs and features, including the same floor area and volume. For multifamily buildings, variations in the exterior surface areas caused by the location of dwelling units within the building do not cause dwelling units to be considered different models.

NOTE: For purposes of establishing HERS sampling groups, variations in the basic floor plan layout, energy design, compliance features, zone floor area, or zone volume, that do not change the HERS features to be tested, the heating or cooling capacity of the HVAC unit(s), or the number of HVAC units specified for each dwelling unit, shall not cause dwelling units to be considered different models.