Does washing on cold really save money?

Yes, substantially. A cold wash typically costs around $0.05 per load in the US compared with $0.37 or more for a hot wash, because heating the water accounts for nearly all the energy a washing machine uses.

How much electricity does a washing machine use per load?

A cold-water load uses about 0.2-0.4 kWh, almost entirely for the motor and pump. A hot-water load that heats internally can use 1.5-2.7 kWh, mostly for heating the water itself.

Is it cheaper to wash clothes in cold or hot water?

Cold water is almost always cheaper, often seven to nine times less expensive per load, and modern detergents clean effectively at cold temperatures for typical everyday laundry.

Do top-loading washers use less electricity than front-loaders?

The washer's own electricity use can be lower on a top-loader connected to house hot water taps, but overall energy use is often higher because top-loaders typically use 40-60% more water per load than front-loaders.

How much does it cost to run a washing machine for a year?

A household doing five loads a week entirely on cold water spends around $13 a year on the machine's electricity; switching most of those loads to hot water can push that past $90-$100 a year.

Laundry

Washing Machine Cost Per Load: Why Hot Water Is the Real Expense

A cold-water wash cycle costs only about $0.03-$0.06 per load in the US, since the machine's motor and electronics use very little power. A hot-water wash using an internal heating element can cost $0.45-$0.75 per load because heating roughly 15-20 liters of water accounts for nearly all the energy used; in the UK a hot wash typically costs 55p-95p versus 5p-8p for cold.

It is easy to assume a washing machine's electricity bill comes from its motor spinning the drum, but the real cost almost always comes from heating water, not moving it. A washing machine's own motor, pump and electronics draw relatively little power, while an internal heating element or a hot water tap feeding hot water into the drum can multiply the load's energy use tenfold. Understanding that distinction explains why switching from a hot to a cold wash is one of the single biggest savings available in an ordinary laundry routine.

Where a washing machine's electricity actually goes

A modern washing machine's motor, drum bearings, water pump and control electronics together draw only 100-500 watts during most of a cycle, similar to a couple of light bulbs, and a full cold wash cycle of 45-60 minutes therefore uses well under 0.5 kWh total. The number changes completely the moment hot water enters the picture. Front-loading washing machines common in Europe and increasingly in the US typically heat cold tap water internally using a 1,800-2,200W element, and raising 15-20 liters of water from a cold 50°F/10°C to a hot 140°F/60°C wash setting consumes roughly 1.5-2.5 kWh on its own, dwarfing everything else the machine does in the cycle.

Cost per load by wash temperature

At the US average rate of $0.16/kWh, a cold wash using about 0.3 kWh total costs roughly $0.05 per load, while a hot wash using 2 kWh for heating plus 0.3 kWh for the motor and pump costs around $0.37-$0.45 per load, seven to nine times more expensive for the identical amount of laundry. A warm wash, heating water partway rather than to a full hot setting, typically lands in between at $0.15-$0.25 per load. In the UK at 26p/kWh, a cold wash costs about 8p while a hot wash costs 55p-70p. Enter your washer's kWh rating from its energy label into the calculator on the home page to see the exact difference cold versus hot washing makes to your own bill.

Cold wash (30°C/86°F, ~0.3 kWh): about $0.05/load, 8p/load
Warm wash (40°C/104°F, ~1.0 kWh): about $0.19/load, 31p/load
Hot wash (60°C/140°F, ~2.0 kWh): about $0.37/load, 60p/load
Very hot/sanitize wash (90°C/194°F, ~2.7 kWh): about $0.50/load, 81p/load

Top-loading vs front-loading machines

In the US, many households still use top-loading washers connected directly to the home's hot and cold water taps rather than heating water internally; in that case the electricity cost stays low regardless of wash temperature, but the true cost of a hot wash simply shifts to whatever water heater, gas or electric, supplies the hot tap, and an electric water heater is often less efficient at that job than the washer's own element would be. Front-loading machines, standard across Europe and increasingly common in North America, almost always heat internally and use significantly less water per load, roughly 40-60% less than a comparable top-loader, which partly offsets their reliance on an electric heating element for hot washes.

Does wash temperature actually affect cleaning?

Modern detergents are formulated to work effectively in cold water, and for most everyday loads of lightly soiled clothing a cold wash cleans just as well as a hot one, which is why cold-wash detergents and 'cold wash' cycle settings have become standard features. Hot washes remain genuinely useful for specific situations: heavily soiled items, bedding and towels that need sanitizing, cloth diapers, or washing after an illness in the household, where the higher temperature helps break down oils and kill bacteria and dust mites more effectively than cold water alone.

Five ways to cut washing machine running costs

Default to a cold or 30°C wash for everyday lightly soiled loads
Reserve hot 60°C+ washes for towels, bedding and genuinely soiled items
Wash full loads rather than several half-loads, since the fixed heating cost is spread over more laundry
Use a high-efficiency cold-water detergent designed to perform without heat
Check your machine's energy label kWh-per-cycle figure at different temperature settings before assuming

Washing machine cost per load by wash temperature (at $0.16/kWh and 26p/kWh)

Wash setting	Approx. kWh	Cost/load (US)	Cost/load (UK)	Cost/year (5 loads/week)
Cold (30°C)	0.3 kWh	$0.05	£0.08	$13
Warm (40°C)	1.0 kWh	$0.19	£0.31	$50
Hot (60°C)	2.0 kWh	$0.37	£0.60	$96
Sanitize (90°C)	2.7 kWh	$0.50	£0.81	$130

Frequently asked questions

Does washing on cold really save money?: Yes, substantially. A cold wash typically costs around $0.05 per load in the US compared with $0.37 or more for a hot wash, because heating the water accounts for nearly all the energy a washing machine uses.
How much electricity does a washing machine use per load?: A cold-water load uses about 0.2-0.4 kWh, almost entirely for the motor and pump. A hot-water load that heats internally can use 1.5-2.7 kWh, mostly for heating the water itself.
Is it cheaper to wash clothes in cold or hot water?: Cold water is almost always cheaper, often seven to nine times less expensive per load, and modern detergents clean effectively at cold temperatures for typical everyday laundry.
Do top-loading washers use less electricity than front-loaders?: The washer's own electricity use can be lower on a top-loader connected to house hot water taps, but overall energy use is often higher because top-loaders typically use 40-60% more water per load than front-loaders.
How much does it cost to run a washing machine for a year?: A household doing five loads a week entirely on cold water spends around $13 a year on the machine's electricity; switching most of those loads to hot water can push that past $90-$100 a year.

Key takeaways

Heating water, not the motor, is responsible for almost all a washing machine's electricity cost
A cold wash costs about $0.05 per load versus $0.37+ for a hot wash in the US
Front-loading machines use 40-60% less water than top-loaders, partly offsetting their internal heating cost
Reserve hot washes for heavily soiled items, towels and bedding rather than everyday laundry
Check your machine's energy label for the exact kWh figure at each temperature setting

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