Electric clothes dryer

[SQLit]

I do not understand your question. Do you mean the least expensive?

[Rich]

Aaaaaaaaahhhhhhhhhh cloths line? Next to that throw them in set the heat to the proper setting (Cotton on my machine) clear the lint filter close the door and press start. I don't know where you live but here near Chicago you are either taking air-conditioned or heated air, except for a few weeks hear and there, that you have conditioned and are throwing it out of your house to run your neighbors heat pump, LOL

YMMV, Rich

[Jim]

Curious as to which would be the most energy efficient drying heavy items like towels or jeans.

High heat?

or a lower heat running longer?

My guess is the short circuit created by the heating coil would use more energy than the motor turning the drum for a longer period of time.