Washer & Dryer Running Cost

Is a heat-pump dryer worth the higher price?

It depends on how much you'll save each year versus how much more it costs, and this calculator gives you the first half of that equation. On running cost alone, a heat-pump dryer is almost always the cheapest of the three types: it uses roughly half the electricity of a standard vented electric dryer (about 1.4 kWh per load versus 3.0), which typically works out to $75–$150 a year in savings for an average household, and more if you do a lot of laundry or pay a high electricity rate. The catch is the purchase price — heat-pump dryers cost several hundred dollars more than comparable standard electric models, so the payback on that price difference alone often runs several years. Whether that's worth it comes down to a few things: how much laundry you do (more loads = faster payback), your electricity rate (higher rate = faster payback), how long you'll keep the machine (they typically last 10–15 years, so there's usually plenty of time to recoup the difference), and whether you value the other benefits — heat-pump dryers are ventless, so they can go in interior spaces without a vent to the outside, they're gentler on fabrics because they run cooler, and they don't pull conditioned air out of your house the way vented dryers do. The main downsides beyond price are that they dry more slowly (longer cycle times) and have a lower capacity feel for very large loads. So: if you're replacing a dryer anyway, do a lot of laundry, pay average-or-higher power rates, and can use the ventless flexibility, a heat-pump dryer is usually worth it. If your current dryer works fine and you'd only be buying it to save energy, the annual saving shown here may not justify replacing a working machine early — use the number to decide, not a blanket rule.

Does washing in cold water really save that much?

Yes — on the wash side it's by far the biggest lever, because heating the water accounts for roughly 90% of the energy a wash cycle uses. The machine's motor, pump, and controls use only a small amount of electricity; almost everything else goes into raising the water temperature. That's why the wash-cost figures in this calculator jump so sharply with temperature: at a typical electricity rate, a cold wash costs only a few cents in electricity, a warm wash noticeably more, and a hot wash can run five to ten times a cold one. Over a year of loads, routinely washing warm or hot instead of cold can add up to real money — often more than the difference between two dryer types. And you usually give up very little to switch: modern detergents are formulated to work in cold water, and for everyday loads (normally soiled clothes, colors, delicates) cold cleans well and is actually gentler on fabrics and colors, which last longer. The cases where warm or hot still earns its keep are specific: heavily soiled or greasy items, cloth diapers, and situations where you need to sanitize (illness, certain allergens), where hot water genuinely helps. A practical approach is to default to cold for the bulk of your loads and reserve warm or hot for the few that need it. One nuance the calculator flags: its hot-wash cost assumes an electric water heater; if your water is heated by natural gas, hot washes cost less than shown because gas heat is cheaper per unit of energy — but cold still wins, since it uses almost no heating at all. Either way, if you're looking for the single easiest way to cut your laundry running cost, turning the dial to cold is it.

Is a gas dryer cheaper to run than an electric one?

Often yes, but it depends entirely on your local gas and electricity prices, which is why this calculator compares them at your actual rates rather than assuming. A gas dryer burns natural gas to make heat (plus a small amount of electricity to run the drum, controls, and blower), while a standard electric dryer makes all its heat from electricity. Because natural gas is usually cheaper per unit of energy than electricity in much of the U.S., a gas dryer frequently costs less per load to operate — sometimes meaningfully less where gas is inexpensive and power is pricey. But that advantage shrinks or disappears where gas is expensive or electricity is cheap, and it faces newer competition: a heat-pump electric dryer is so efficient (using about half the electricity of a standard electric dryer) that it can match or beat a gas dryer's running cost even though electricity costs more per unit, because it simply uses far less of it. So the three-way picture the calculator shows is the honest one — at your rates, the cheapest to run might be gas or might be heat-pump, and standard electric is usually the most expensive of the three. Beyond running cost, gas dryers have trade-offs: they cost more upfront than standard electric models, they require a gas hookup and a vent to the outside (an installation cost and constraint if you don't already have gas plumbed to the laundry area), and like any gas appliance they should be installed and vented properly for safety. If you already have a gas line to your laundry room, a gas dryer is often a low-running-cost choice; if you don't, the cost and hassle of running gas may tip you toward a heat-pump electric dryer instead. Enter your real gas and electric rates above to see which actually wins for you.

My bill seems higher than this estimate — why?

A few things commonly explain a gap between this estimate and what your laundry seems to cost in real life, and most come down to the difference between standardized averages and your specific situation. First, usage: the estimate scales off the loads-per-week you enter, so if you're running more loads than you think — extra small loads, heavily soiled loads run twice, or a growing household — the real total climbs. Second, wash temperature and water heater: the calculator assumes an electric water heater for the hot-water portion, and if you wash warm or hot more often than the 'usual' setting you selected, or your water heater is inefficient or set very high, the wash cost runs higher. (Conversely, a gas water heater makes hot washes cheaper than shown.) Third, the machines themselves: an older, less efficient washer or a standard vented dryer with a clogged lint filter or long, kinked vent runs uses more energy than the modern-average figures here; a dryer that has to run a load through two cycles because it's overloaded effectively doubles that load's dry cost. Fourth, drying method: timed drying (versus a moisture sensor) often over-dries and wastes energy, and drying large or bulky items like comforters takes far longer than an average load. Fifth, your rates: if your actual electricity, gas, or water rates are higher than the defaults — or you're on a time-of-use plan and do laundry during peak hours — plug your real numbers in for a truer figure. Finally, remember this tool estimates only the laundry pair's running cost; your overall utility bill includes everything else in the house, so laundry is just one slice. If you want the most accurate laundry figure, enter your exact loads, your most-used wash temperature, your real utility rates, and the dryer type you actually own — and know that the calculator intentionally models a typical efficient setup, so an older or heavily-used one will run somewhat higher.