Dryer vs Clothesline: The Full Cost Guide

The headline numbers

At the defaults, 5 loads a week is 260 loads a year. At 3.0 kWh per load and $0.17 per kWh, each dryer load costs $0.51, so the dryer costs $132.60 a year in energy. Line drying costs $0.00 in energy, so the saving is the full $132.60. Three numbers drive all of it: how many loads you run, how much energy each load takes, and what your electricity costs. Nothing else in the energy comparison matters, which is what makes this one of the cleanest savings in a house — there is no subscription, no installation, and no equipment to buy beyond a line and some pins.

Why the dryer costs what it does

A clothes dryer is, by design, a heater with a fan attached. It warms a large drum of air and blows it straight out of the vent, carrying the water away with it. Heating air and throwing it outside is inherently wasteful — unlike an oven, which at least keeps its heat in the box — and a standard electric dryer needs about 3.0 kWh to do it once. That is roughly what a 1,000-watt appliance uses in three hours, spent on a single load of laundry. A clothesline does the same evaporation with sun and moving air, which arrive unmetered. The dryer is not a scam; it buys speed and convenience. But the price of that convenience is $0.51 a load at the defaults, and most households pay it hundreds of times a year without ever seeing the line item.

When the numbers move

The defaults are a middle household; real households move the figures in predictable directions. With just 3 loads a week, the dryer costs $79.56 a year — even a small household saves real money by hanging laundry. With 7 loads a week, a large family's dryer costs $185.64 a year, which is where the clothesline pays best. An efficient dryer at 2.0 kWh per load cuts each load to $0.34, so 5 loads a week costs $88.40 a year instead of $132.60 — a newer machine helps, but the line still beats it by the full $88.40. And where electricity costs $0.30 per kWh, each load costs $0.90, so 5 loads a week costs $234.00 a year — in high-rate areas the clothesline is worth nearly twice the default saving. If your rate is high and your household is large, line drying is one of the biggest no-cost savings available.

Practical tips that keep the saving real

Start with the heavy items. Towels, bedding, and jeans hold the most water and take the longest in the dryer, so they carry the most energy per load — hang those first and the saving arrives even if you still machine-dry delicates. Hang laundry in the morning so it has the full day; a load hung at noon in summer is often dry by evening, while a load hung at dusk may sit damp overnight. Give items space and air: clothes crammed together dry slowly and can smell musty, while a breezy, spaced line dries faster than a sheltered, crowded one. Shake each item out before hanging — it cuts wrinkles enough that many things skip ironing entirely, which is a second, smaller saving. And keep a folding drying rack indoors for rainy days: it preserves most of the saving on days the outdoor line cannot, and it costs almost nothing.

Mistakes that wipe the saving out

The first mistake is counting loads you never machine-dry. The calculator assumes every load you enter would otherwise go in the dryer; if you already line-dry half your laundry, enter only the dryer loads or the saving is overstated. The second is quitting after the first rainy week. Line drying fails on wet days — that is what the indoor rack is for — and a household that gives up after one bad week keeps paying $132.60 a year for nothing. The third is hanging everything in a damp, airless space, which dries slowly and can leave a musty smell that sends the load straight back into the dryer for a refresh cycle — the worst of both worlds. The fourth is ignoring the dryer you already own: if you do machine-dry, clean the lint filter every load and the vent regularly, because a clogged dryer uses more energy per load and takes longer, which raises the $0.51 figure the calculator starts from. Finally, do not forget the boundary of the comparison itself: this is energy cost only, not the price of buying or repairing a dryer, and not the value of your time.

How to calculate your own laundry

Count your dryer loads honestly for two typical weeks — not the week you did spring cleaning, and not the week you were away. If your dryer has an energy label, read its kWh per load; otherwise 3.0 kWh is a fair standard figure and 2.0 kWh suits a newer efficient machine. Read your electricity rate from a recent bill, dividing the supply-plus-delivery total by kilowatt-hours used if the bill does not state a single rate. Then open the Dryer vs Clothesline Calculator, enter your loads, energy per load, and rate, and read the annual figure: if it is over $100 a year, put up a line or buy a rack this week and start with towels and bedding. Keep the dryer for rainy days, delicates, and the weeks life gets busy — a partial switch still keeps most of the saving, and a line you actually use beats a perfect plan you abandon.