We have a relatively new electric dryer and I'd like to know what the most energy efficient way to dry a load of clothes is. The goal is to minimze the kWh consumed, regardless of the time it takes. Is it better to run it on low heat for a longer period or high heat for a shorter time? It runs on 220V so I can't plug my kill-a-watt into it to measure. Does anyone know if the heating elements operate less efficiently at high temperatures versus low? If not, it seems that high temp would be the best setting, since it minimizes the time that the unit has to spin. But my fuzzy memory of physics tells me that as the temperature of a conductor increases (e.g. the metal heating elements in the dryer), the resistance also increases, making it less efficient. The dryer has moisture sensors but I find they are not that accurate (the dryer keeps drying after clothes are dry). We're in a mixed hot-humid environment (Dallas).