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Dishwasher Buying Guide

A comprehensive guide to buying a dishwasher. Learn what to look for in a dishwasher so that you can make an informed decision.

Getting Started

Outfitting your kitchen with an energy-efficient dishwasher is one of the easiest ways to save time and money. Whether you're looking to upgrade an existing model, shopping for a new home, or you're just sick of doing dishes by hand, you've come to the right place.

Installing an ENERGY STAR certified dishwasher can save more than 230 hours and around $100 every year, compared to hand washing. Keep reading to figure out what you need to know to start saving.

Sizes of Dishwashers

Most dishwashers are one of two sizes: standard or compact. Standard size dishwashers are 24 inches wide whereas compact models are only 18 inches wide. The two sizes of dishwashers differ only in width. They share a 34" height and 24" depth.

Standard dishwashers include Tall Tub dishwashers that offer a larger interior capacity despite their shared outer dimensions. If you need something slightly smaller, look for an ADA Compliant/Short Tub dishwasher. These units are only 32" high.

The capacity of these machines will depend on the size of your dishes. But in general, you can expect:
  • Compact dishwashers - 8 - 10 place settings
  • Standard dishwashers - 10 - 14 place settings
  • Tall Tub dishwashers - 14 - 16 place settings

Types of Dishwashers

Built-In

The most common type of dishwasher is a built-in model. Built-in dishwashers are designed to be installed under your countertop. Their sides are unfinished as they will be hidden by the surrounding cabinetry. These models must be wired to a 120 volt circuit breaker by a licensed electrician.

Portable

If you don't have room for a built-in model, consider a portable dishwasher. These free-standing models usually sit on caster and can be wheeled in and out of place as needed. They include two hoses. The first connects to your sink's faucet, providing water for the wash. The second hose delivers wastewater back to the sink for draining. Both hoses and electric cords store neatly behind the unit.

Portable dishwashers offer finished sides and often rest beneath a butcher block. These models can be converted into built-in dishwashers by removing the exterior walls and rollers. The versatile nature of a portable dishwasher makes them ideal for apartments, older homes, and mobile homes. They can provide extra counter space when preparing a meal and wheel out of the way when they aren't needed.

Dishdrawers

The newest type of dishwasher is the "dishdrawer." This innovative design splits the upper and lower racks of a standard dishwasher into two independent appliances. Instead of opening with a hinged door, dishdrawers slide out for easy loading and unloading. This design is especially useful for those who have trouble bending down. And because each drawer can be run separately, dishdrawers enjoy exceptional energy efficiency.

Choose from double and single drawer designs. Double drawer dishwashers fit are conveniently sized to fit standard dishwasher cutouts. Single drawer models are the same width as a standard dishwasher but half the height. So you can repurpose some of the space used for your dishwasher for more cabinet space.

Style

Exterior Appearance

Like most kitchen appliances, dishwashers manufacturers stick to familiar finishes: White, Black, Bisque, and Stainless Steel. Some high-end models can be outfitted with custom panels to match the surrounding cabinets.

Once you've decided on a finish for your new dishwasher, consider the placement of its control panel. Front controls make it easy to monitor the progress of a cycle. Top controls, on the other hand, provide an unblemished front panel that can give your kitchen a sophisticated look. Models with semi-hidden controls combine these two designs. Stylish as they may be, it can be difficult to know when top control dishwashers are running. In response to this concern, some shine a small light on the floor when in use.

Handles are the final feature to consider when thinking about the exterior appearance of your new dishwasher. Choose between bar handles and recessed ones. While bar handles can get in the way, snagging on clothing as you walk passed, they also provide a spot to hang dish towels. Recessed handles don't have any storage benefits. But they do provide the front panel with a sleeker appearance.

Interior Options

When looking inside a dishwasher, the tub material and rack features provide the greatest functional impact.

Dishwasher tubs are made with either stainless steel or plastic. Stainless steel tubs are more resistant to stains and odors than plastic ones. They also retain heat more effectively, allowing dishes to dry more effectively. And while stainless steel is definitely more durable, plastic tubs are plenty durable themselves. Even plastic tubs tend to last longer than the dishwasher itself.

Dishwasher racks are far more diverse. Most models offer two racks: a top and a bottom. Some include a shallow third rack that's perfect for large utensils or silverware. If you wash large items often, consider a model with adjustable racks. Foldable tines are the most common adjustment, making room for wider items. Many dishwashers also feature upper racks that you can raise, lower, or even adjust their angle. Adjustable upper racks make it easy to find a spot for large dishes or cookware that might not fit in other models.

Price Range

Dishwashers are often broken down into three price ranges:

Under $500

Just because they're affordable, doesn't mean they can't clean. These inexpensive dishwashers often come with plastic tubs and limited cycle options. Finding an adjustable rack in this price range is also rare. Plus, these models are often louder than more expensive models.

$600 - $900

Nearly every dishwasher in this range includes a soil sensor. Adjustable racks and stainless steel tubs are also very common. Dishwashers in this price range also tend to be a good deal quieter than less expensive models.

$1,000+

If you want a catalog of wash cycles and the latest and greatest features, expect a four-digit price tag. Models in this price range will include features like Wi-Fi connectivity and special wash zones.

Features

Automatic Temperature Control

A control that automatically balances water temperature. It adds the correct amount of hot and cold water to ensure the proper temperature. This way, the detergent dissolves properly.

Child Lock

This indicates that the dishwasher has a locking feature that will prevent children from opening it or changing programs.

Cycles

Each cycle differs in the number of washes and rinses. Most dishwashers offer light, normal, and heavy cycles. While these three should cover most of your cleaning needs, high-end models sometimes offer a list of options. Of these, Quick and Single-Rack cycles may be the most useful. The quick cycle cleans lightly soiled dishes in a fraction of the time that it takes to run a full cycle. And as the name suggests, single-rack cycles focus on just the top or bottom rack. Doing so conserves energy when you have a partial load that needs cleaning.

Delay Wash

This feature enables you to set the dishwasher to turn on at a later time. For example, you can set the timer to turn on in the evening when electricity rates drop.

Filters

There are two kinds of dishwasher filters: self-cleaning and manual. Self-cleaning filters grind food particles and debris into tiny pieces so they can safely run down the drain. To do so, many use a grinder similar to the garbage disposal you might have in your sink. Others use a fine mesh that breaks down food as water rushes through it. Filters that use a grinder tend to be noisy which is why many high-end dishwashers employ the fine mesh versions.

Manual filters must be cleaned now and then. Cleaning these filters only takes a minute or two. Simply remove the filter and run it under a faucet until the food particles rinse away. If you start noticing food stuck to your dishware, it's time to wash the filter.

Heated Dry

Opening your dishwasher after a wash cycle and finding still wet dishes is a pain. Many models offer heated drying cycles to avoid this. This option either uses extra hot water during the final rinse or a separate heating element to dry things at the end of the cycle.

Noise Level

Some dishwashers sound like a train crashing through your kitchen. Others emit little more than a quiet purr. Most manufacturers offer a decibel rating for their dishwashers. Just be aware that this rating is an average over the course of a cycle. So there will likely be louder moments from time to time, especially in model with grinder-equipped self-cleaning filters.

Lower numbers are better when looking at the dishwasher decibel levels. You'll barely notice anything in the 40 - 50 dBA range. At 60 dBA, the dishwasher will be about as loud as normal conversation.

Plate Warmer

A feature that allows you to warm your dishes should you choose to serve food on warm plates.

Rinse Aid Dispenser

Some dishwashers include a rinse aid dispenser on the inside of their doors. Rinse aids improve drying results while preventing spotting and filming.

Sanitary Wash/Rinse

Dishwashers that offer this option use water heated over 150 degrees or higher to remove bacteria from your dishes.

Soil Sensor

An electronic sensor monitors the rinse water and adjusts the cycle length to make sure your dishes come out fully clean.

Wash Zones

Some dishwashers can clean just the top or bottom rack in a cleaning cycle. Doing so allows you to conserve water and energy when you only need to clean a few items.

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