How is your power bill? And what brand detergent do you use?
My power bill is more affected by how hot it is, and therefore how much ac I use. Dryers do not use that much because I’m not constantly drying clothes, 12 hours a day. In fact since those washer and dryer combo units takes a minimum of 5 hours to finish a cycle, that’s not going to happen. These units are designed to be very efficient by the way, and uses heat pumps to generate the necessary heat for drying and removal of humidity, and therefore are very energy efficient.