Does not vent indoor air to the outside and waste the large volume of conditioned (heated or cooled) air that a mechanical dryer's blower does. For a simple line drying arrangement (rope and clothes pins) the repair and replacement costs are about $20.00 per 1,000 loads of laundry or 2 cents per load. For non-commercial mechanical clothes drying the repair and replacement costs (including labor expenses) are about $200.00 per 1,000 loads of laundry or 20 cents per load.