The use of ceiling fans in the homes of these regions would influence the energy use of conventional air conditioners. The figure below geographically represents the saturation levels of water-heater blankets. The latter area's utility conducted a free water-heater wrap program in 1989. Evidently, this program was highly successful. A geographic representation of saturations of water-heaters based on data from the RASSes.
White areas indicate a lack of data for that region.