I have a tip for gas/oil related to drying... if you load your dryer immedately after another load, it is still warm. In addition, if you are in the market for a new washer/dryer combo, get a front load washer. It uses less water which saves on hot water, or just water in general, which means it uses less electricity to tumble the clothes through the water, since it weighs less. Also, they get more water out of the clothes through the spin cycle, which means faster drying times... which means, you need to get a dryer that has a moisture sensor, as it will shut off when it detects that the clothes are dry.