05/31/2026
The fuller the drum, the harder the dryer works for less.
A dryer works by tumbling clothes through hot, moving air. When the drum is overstuffed, clothes stop tumbling and start pressing against the walls. Moisture has no path out. The heater keeps cycling on, the motor keeps running, and the load that should have finished in 45 minutes stretches past 75. The motor in a residential dryer is rated for a typical load weight, so overloading also wears the drive belt, bearings, and motor faster than the manufacturer expects.
ENERGY STAR recommends filling the drum no more than three-quarters full. You should be able to see empty space at the top when the door closes. The official guideline is that clothes need room to tumble freely. If you watch through the glass and see laundry barely moving in a wet mass, the drum is too full. The visual rule: clothes should fall, not just rotate stuck to the drum wall.
Two right-sized loads also use roughly 15 to 20% less electricity than one crammed load that needs an extra run to finish. On a household running 5 loads a week at high heat, that adds up to around 100 to 150 kWh per year, or about $20 to $30 off the electric bill. Over a typical dryer's 13-year lifespan, that's $260 to $390 in saved electricity from one small habit change.
Sort by fabric weight too. Towels and jeans dry slower than t-shirts, and mixing them forces the entire load to keep running until the heaviest item is done. Towels with jeans together is fine. Towels with cotton blouses wastes 15 to 20 minutes every time. Dry like with like, leave a third of the drum empty, and you spend less time and electricity for the same result. The lint screen also stays cleaner when fibers from heavy items aren't mixing with delicate fabrics across one long cycle. One last visual check: if clothes come out hot and twisted into a tight ball at the bottom of the drum, the load was too heavy and too wet for the cycle to balance. Split it in half next time and you'll get faster, more evenly dried laundry and a quieter dryer too. The drum bearings and belt last longer when they aren't fighting overloaded weight every single load. [ZSOF1]