When I have wet clothes coming out of the washing machine, I can either tumble-dry them in an electric clothes-dryer, or I can hang them to dry. But I can only hang them in a basement. The basement has poor air circulation and gets kinda cool and humid in the summer. So there is a dehumidifier in the basement, set to cycle on when the humidity gets above 65%. When wet clothes are hanging in the basement, of course the dehumidifier tends to run longer and more frequently.
So there is an electricity usage tradeoff - either the dryer uses a lot of electricity if I tumble-dry, or the dehumidifier uses extra electricity if I hang-dry. Which is likely to be more energy-efficient overall?