How Does a Washing Machine Work Without an Agitator?

What Is an Impeller in a Washing Machine?

An impeller is a low-profile, disk-like device located at the bottom of the washer’s spin basket.

Here are more details about a washing machine impeller:

• Unlike an agitator, which protrudes from the center of the spin basket, an impeller has a much smaller footprint, leaving more room for clothes.
• It features fins, vanes, or grooves that create a powerful water current when the machine operates in the washing portion of the cycle.
• In some washers, the spin basket and impeller rotate in opposing directions to create turbulence inside the tub to tumble clothes and get them clean.

How Washer Impellers Work

Instead of physically moving clothes with an agitator’s back-and-forth motion, impellers use the force of water to clean garments. Here’s how it works:

Tumbling and Rotating Clothes

The impeller spins at high speeds, generating turbulent currents of water.

These currents move clothes around the drum, ensuring they rub against each other, which dislodges dirt and grime.

Increased Water Action

The grooves and fins on the impeller enhance the motion of water and detergent, creating a dynamic wash action that cleans effectively without the need for aggressive mechanical agitation.

Gentler on Fabrics

Without an agitator’s central post, clothes have more space to move freely. This reduces the likelihood of fabric damage, tangling, and stretching—making impeller washers ideal for delicate items or bulky loads like comforters and blankets.

Higher Spin Speeds

Impeller washers often boast higher spin speeds, which remove more water from clothes during the final spin cycle. This helps reduce drying time and energy consumption.

Advantages of Impeller Washing Machines

Here are key benefits of impeller washing machines.

Greater Load Capacity

The absence of an agitator allows for a larger area in the spin basket to load garments. This benefit makes these machines perfect for families or those with frequent heavy laundry loads.

Energy and Water Efficiency

Impeller washers use less water than traditional agitator models, thanks to high-efficiency (HE) technology. Less water means the washer can tumble clothes and spin more efficiently, using less electricity.

Gentler on Clothes

Because impeller washers don’t rely on aggressive agitation, they are less likely to damage fabrics, keeping your clothes looking newer for longer.

Challenges of Using Impeller Washers

While impeller washers have many benefits, they aren’t without drawbacks:

• Longer Cycle Times: HE impeller models often have longer wash cycles compared to traditional agitator machines. However, many models offer quick wash settings for time-sensitive loads.
• Learning Curve: Users accustomed to agitator models may need to adjust their habits, such as how to load clothes for optimal performance. Garments need to be loosely dropped into the spin basket instead of shoved into the washer in a tangled ball.
• Pre-Treatment May Be Required: While impeller washers excel at general cleaning, heavily soiled garments may need pre-treatment for the best results.

Tips for Using an Impeller Washer

To maximize the efficiency of your impeller washing machine, follow these simple tips:

• Load Clothes Evenly: Distribute clothes evenly around the drum for balanced washing. Avoid overloading, which can hinder water and detergent circulation.
• Use the Right Detergent: Always use HE detergent, as it produces fewer suds and optimizes cleaning performance in water-efficient machines.
• Pre-Treat Stains: For tough stains, use a pre-treatment product or soak clothes before washing.
• Follow Manufacturer Instructions: Refer to your washer’s manual for specific guidelines on load sizes and cycle options.

Maintaining an Impeller Washer

Performing regular washer maintenance and cleaning will keep your machine in top shape and working efficiently.

Follow the tips shown in this video to clean and maintain your impeller washer:

Schedule annual professional washer maintenance and cleaning service to make sure your washing machine continues to perform efficiently. A technician will check all aspects of washer operations during Sears Home Services Clean & Maintain service.

Annual professional maintenance will also help your washer last longer. Bundle appliance maintenance to have all of your appliances maintained and tuned up in one convenient visit.

Sears Home Services is always here to help you with all of your appliance repair and maintenance needs.