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For U.S. residential washers, the broad efficiency ranking is: ENERGY STAR certified front-load first, top-load impeller second, and traditional top-load agitator third. ENERGY STAR’s comparisons put certified front-load washers at about 25% less energy and water use than top-load impeller washers and about 50% less than top-load agitator washers. These are program-level comparisons, not guaranteed savings for every model or household.
Washer types ranked from most to least efficient
The ranking reflects ENERGY STAR’s U.S. comparison of washer categories. It is a useful starting point, but the type alone cannot tell you which individual model will use the least energy or water.
1. Front-load washer: most efficient in the comparison
A front-loader tumbles clothes through a relatively small amount of water. ENERGY STAR says its certified front-load washers use about 25% less energy and water than top-load impeller washers and about 50% less than top-load agitator washers. Certified front-load models may also be stackable or designed for under-counter installation; those configurations are not, by themselves, evidence of better efficiency. ENERGY STAR’s clothes-washer buying guidance provides the category comparisons.
2. Top-load impeller washer: middle of the ranking
An impeller washer uses a low-profile cone or disc instead of a tall central agitator. ENERGY STAR describes this design as a more efficient option than traditional top-load machines, while its comparison still places certified front-load washers ahead. Performance varies by model, so check the individual machine’s metrics.
#1 Best Overall
- Tough Action for Tough Stains: Our top load clothes washer features a Triple Action Agitator to tackle your toughest loads in three powerful ways: Spraying Action to attack dirt from every angle with a concentrated detergent mix, Wash Basket Action to move the wash basket back and forth, and Agitator Action to move clothes in a circular pattern
- More Laundry, Less Time: Our high-efficiency top load washer features Express Wash to clean small loads in just 28 minutes (based on a 3-lb load, default cycle setting), and Accela Wash to clean full-size loads up to 51% faster (compared to a standard 8-lb load, normal cycle, warm wash temp, extra heavy soil setting) - so you spend less time doing laundry
- Wash Your Way: Features 10 wash cycles to custom wash your loads including Heavy Duty, Whites, Towels, Delicates, and Express Cycles. Select from 4 temperature options and rinse with Extra Rinse to help protect sensitive skin. Soft Close lid has tempered glass and won’t slam shut
- Easy to Operate: Use the intuitive light-touch controls to select the load and cycle options that match the fabric types in each load. Plus, the convenient LED lights provides time remaining and cycle status information
- Reduce and Save: Energy savings includes Cold Clean which cleans gently & completely while using up to 90% less energy (when compared to the normal cycle, default settings, 8-lb load). Remove shipping bolts from unit prior to install.
3. Top-load agitator washer: least efficient in the broad ranking
This traditional top-load design uses a central agitator to move laundry through the wash. It is the baseline in ENERGY STAR’s comparison showing lower energy and water use for certified front-loaders. That does not mean every agitator model is inefficient or unable to qualify for ENERGY STAR; the model’s own data matter.
What the efficiency figures mean
ENERGY STAR’s buying guidance also gives broader comparisons: certified washers use about 20% less energy and 30% less water than regular washers. For full-sized machines, it illustrates water use as 14 gallons per load for a certified washer versus 20 gallons per load for a standard machine. These are program comparisons, not fixed consumption rates for every model or laundry load.
Rank #2
- 【2-in-1 Convenience】The 17.8 lbs (1.5cu.ft) fully automatic washing machine combines washing and spin drying functions, allowing you to wash and spin dry your clothes in one seamless process, making it the perfect all-in-one portable washing machine for your laundry needs. Say goodbye to laundry day hassle
- 【Superior Cleaning Performance】This top load portable washing machine features a unique diamond-patterned inner drum that reduces wear and tear on your clothes when washing while improving cleanliness and ensuring you get spotless laundry. Also, it is built-in a drain pump which allows you to easily drain out water
- 【Versatile Washing Options】 Choose from 8 different washing modes and 5 water levels, making this clothes washer perfect for anything from heavily soiled items to delicate fabrics. Enjoy quick washes in just 26 minutes, making it ideal for busy lifestyles and different laundry demands
- 【User-Friendly Design】Designed for ease & safe of use, this compact washer includes a child lock for safety and adjustable feet for stability. The self-cleaning ensures that the washing machine's stainless steel inner tub is clean. And the clear control panel makes operation straightforward. Perfect for busy households, ensuring everyone can use it safely and effortlessly
- 【Ideal for Any Space】Whether you live in an apartment, RV, home or dorm, this portable washer is the ideal solution for small spaces. Its compact design and efficiency make it a versatile laundry machine suitable for a variety of living arrangements
The key metrics help you compare machines beyond their design:
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →- IMEF (Integrated Modified Energy Factor): relates washer capacity to energy use, including the machine, hot water, remaining-moisture removal, and low-power modes. A higher IMEF indicates greater energy efficiency.
- IWF (Integrated Water Factor): measures water consumption per cubic foot of capacity. A lower IWF indicates greater water efficiency.
ENERGY STAR’s criteria page, changed April 22, 2021, lists certification thresholds for residential models above 2.5 cubic feet: front-load models must have an IMEF of at least 2.76 and an IWF no higher than 3.2; top-load models must have an IMEF of at least 2.06 and an IWF no higher than 4.3. These are certification thresholds, not a guarantee that certified models perform equally in real homes. See the ENERGY STAR clothes-washer criteria.
Rank #3
- The full-automatic washing machine equipped with Heavy, Soft, Normal, Rapid, and Soak 5 programs and 3 water levels, you are allowed to quickly start the machine the way you like. You are also welcomed to customize your washing program by selecting load size, adding wash time, rinse time, and spin time.
- This top load compact washing machine with only 18.1 inches in width, 17.7 inches in-depth, and 31.5 inches in height, this portable washer is able to be stored easily. You can store it in your cabinet, RV, dorm, or even bathtub Even better, it comes with wheels and handles for easy movement. It is a perfect choice for small households with limited space and minimal optimal.
- With the transparent lid design, this washing machine allows you to see and monitor the water and washing conditions. Featuring a durable rust-resistant steel inner tub, lint filter, water inlet and drain pump which allows you to easily drain out dirt
- This compact design washing machine has DOE (Department of Energy) certificate that clearly shows how much energy would be consumed on national average conditions. Saving as much as 87.5% energy consumption comparing to similar models, it equips with a powerful and durable motor, up to 840RPM spin speed but quiet when running.
- Unbalance could be a very serious issue for washing machines. It could cause washing machine to dance on the floor, or even worse, to unleash itself from the water inlet, leaking everywhere. Equipped with Auto Unbalance Detection (AUD), however, it's able to automatically fix the unbalance issue through allowing more water to come in. It will also alert the user if the problem can't be fixed, ensuring a safe and pleasant experience. NOTE : Refer to the PDF attached below in Technical Specification for the Installation and Troubleshooting Steps
How to choose an efficient washer
- Check current ENERGY STAR status. Confirm the exact model in the current listing rather than assuming every washer of a given design is certified.
- Compare IMEF and IWF. When comparing suitable models, look for a higher IMEF and lower IWF.
- Read the EnergyGuide label. Use its estimated annual energy use and operating cost to compare similar models. The estimate is a comparison aid, not a promise of your household’s bill.
- Match capacity to your usual loads and available space. A capacity that suits your laundry pattern may help avoid extra loads, but the amount of any savings depends on how the washer is used.
- Check local incentives separately. ENERGY STAR points consumers to a Rebate Finder, but eligibility and available offers depend on location and program rules.
The quoted percentages do not establish what a particular household will save. Actual results depend on the model, load pattern, and use; the reviewed guidance does not provide a household-specific savings figure.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What to use outside the United States
This ranking and its percentages are based on U.S. ENERGY STAR guidance. Natural Resources Canada also describes front-load tumbling and advanced top-load operation, but the material reviewed does not establish a single harmonized international ranking or equivalent percentages for every market. Outside the United States, compare the local energy label and the data for the exact model sold in your country. The U.S. Department of Energy’s consumer information describes federally covered clothes washers and standards activity; proposed changes should not be treated as finalized requirements. U.S. Department of Energy clothes-washer information.
Quick Recap
Best Value
- 15.4 LBS. OF LAUNDRY PER LOAD—Wash up to 15.4 lbs. of laundry per load with this superior BLACK+DECKER best portable washer. Our portable clothes washer (21.6” x 22.2” x 37.4”) has 6 cycle selections—Normal, Heavy, Delicate, Quick, Bulky, and Spin Only. Even suitable for baby clothes, diapers, and lingerie.
- IMPRESSIVE FUNCTIONALITY—With your new washer machine (79.4 lbs.) you have 3 water level choices for small, medium, and large loads as well as Hot, Warm, and Cold temperature settings. You can even select Delay Start up to 24 hours.
- STAINLESS STEEL TUB— This 2.0 cu. ft. portable washing machine features a durable, rust and corrosion-resistant stainless steel tub with top loading transparent quiet close lid. See your clothes cleaned in real time with our outstanding impeller washer!
- ADDITIONAL FEATURES—There’s a lot going on with our amazing washing machine, including auto unbalance detection to ensure your laundry is being cleaned at peak performance as well as auto shutoff safety features and child lock protection.
- DESIGNED FOR MOBILITY— This fantastic portable clothes washer machine can be transported from room to room thanks to two rollers, two side handles, and adjustable leveling legs. Also included with our compact washer is a quick connect adaptor, water supply hose, and drain hose.
Rank #4
- WASH UP TO 11 LBS.—Wash up to 11 lbs. of laundry at a time with this superior BLACK+DECKER best portable washer. Our portable clothes washer (21.3” x 21.7” x 36.6”) has 6 cycle selections—Normal, Heavy, Delicate, Quick, Bulky, and Spin Only. Even suitable for baby clothes, diapers, and lingerie..ENERGY-EFFICIENT OPERATION: Built-in lint-filter that does not need to be replaced, just clean it about once a month designed for high-efficiency detergents and cold water use only..Operation mode : Automatic.
- IMPRESSIVE FUNCTIONALITY—With your new washer machine (70.5 lbs.) you have 3 water level choices for small, medium, and large loads as well as Hot, Warm, and Cold temperature settings. You can even select Delay Start up to 24 hours.
- STAINLESS STEEL TUB— This 1.7 cu. ft. portable washing machine features a durable, rust and corrosion-resistant stainless steel tub with top loading transparent quiet close lid. See your clothes cleaned in real time with our outstanding impeller washer!
- ADDITIONAL FEATURES—There’s a lot going on with our amazing washing machine, including auto unbalance detection to ensure your laundry is being cleaned at peak performance.as well as auto shutoff safety features and child lock protection.
- DESIGNED FOR MOBILITY— This fantastic portable clothes washer machine can easily be transported from room to room thanks to two rollers, two side handles, and adjustable leveling legs. Also included with our compact washer is a connector adaptor, water supply hose, and drain hose.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
