While the upfront cost of a dishwasher may seem like a significant investment, this kitchen workhorse is a luxury that’s hard to live without — saving precious time, energy and water while delivering superior cleanliness and hygiene.Today’s best dishwashers offer an array of convenience features that ensure exceptional cleaning performance alongside user-friendly operation. But what key factors should guide your purchase decision? The experts in the Good Housekeeping Institute’s Home Care & Cleaning Lab break it all down to help you make the most informed choice.Top Dishwasher QuestionsWhat makes a good dishwasher? ✔️ Cleaning Performance: When we test dishwashers, we soil various types of dishes, from plates and bowls to glassware and cookware. We then load them into each appliance, skipping the pre-rinse. The best models eliminate tough, greasy, starchy messes while ensuring dishes come out clean, dry and spot-free. ✔️ Smart Features and Flexibility: We test multiple cycles on each machine, including special options and any compatible app (if available). Many modern dishwashers now feature WiFi connectivity for cycle monitoring and automatic detergent reordering. We also assess the capacity and flexibility of racks, trays and baskets to ensure they can accommodate a variety of dishware. The best models offer adjustable racks, specialized holders for wine stems and third racks for utensils. Ease of use, loading and programming are also key considerations.✔️ Energy and Water Efficiency: An energy-efficient dishwasher is not only better for the environment but can also save you money in the long run. We evaluate and rate each appliance based on its energy consumption and efficiency. Look for Energy Star certification and wash options that optimize water usage while maintaining cleaning power.✔️ Quiet operation: No dishwasher is completely silent, but we prioritize models that clean effectively while operating quietly. Typically, we consider a dishwasher very quiet if it runs at around 40 dBA or below. Prior to testing the cleaning performance of various cycles, we uniformly apply, then bake-, dry- and burn-on mac and cheese, hamburger, oatmeal, egg yolk, milk and more to cookware, dishes, glasses and utensils.What should you consider when buying a dishwasher?✔️ Size and Configuration: Most dishwashers are 24-inch built-in, under-the-counter models. However, for smaller kitchens that can’t accommodate a full-size unit, some brands offer 18-inch models. If space is especially limited, a portable dishwasher is another option. These units, often on wheels, feature finished sides, water hookups that connect to a sink faucet and sometimes even butcher-block tops for added functionality. Countertop dishwashers are another small-space option.✔️ Dishwasher Tub: Dishwashers typically feature interiors made of either stainless steel or plastic. Both can be durable, but we generally prefer stainless steel, which is now standard in all but the most budget-friendly models. Stainless steel is superior because it retains heat for better drying, resists stains and odors and offers greater long-term durability.✔️ Rack Design and Adjustability: Many modern dishwashers feature three racks: the standard two plus a shallow top tray designed to replace the traditional flatware basket. This setup frees up space on the bottom rack, allowing for better spacing and more thorough cleaning. Some models also include fold-down shelves for stacking cups, adjustable or removable tines to accommodate large or oddly shaped items, stemware clips and even pop-up holders for vases and decanters.When shopping in a showroom, slide the racks in and out to check for sturdiness and smooth operation, and test how easily they adjust. If you have a specific platter or plate you want to ensure fits, consider bringing it with you to the store.✔️ Cycle Options: Basic models with a limited number of cycles are the most budget-friendly, but many dishwashers now offer a wide variety of wash options, including:Auto or Smart Wash: Dishwashers equipped with soil sensors will have cycles called “Auto” or “Smart Wash.” These cycles adjust the length of the cycle and the amount of water to better match how dirty the dishes are. Lightly soiled loads require less time and water, while heavily soiled dishes get a longer wash with hotter water for better cleaning.Heavy-Duty: Best for dishwasher-safe pots and pans that need extra scrubbing power.Speed Cycle: Ideal for lightly soiled items you need quickly, like extra glasses or flatware during a party. Many models offer a one-hour wash-and-dry cycle.Quick Rinse or Rinse Only: Useful when you don’t have enough items for a full load but want to prevent food from drying on dishes.Dry Boosting: Enhances drying, especially for glassware and plastic, to reduce spots and excess moisture. This feature may be labeled as Turbo Dry or Extra Dry on some models.Delay Start: Allows you to schedule the wash cycle for later, such as during off-peak energy hours or overnight when household water usage is lower.Sanitizing Cycle: Uses a high-heat rinse to kill bacteria, making it ideal when someone in the household is sick. Look for NSF certification to ensure the cycle meets proper sanitization standards.China or Delicate Cycle: Designed for fragile glassware and fine china, providing a gentler wash.Half-Load Cycle: Optimized for smaller loads, washing only items in the top or bottom rack to conserve water and energy. ✔️ Control Panel Design: Electronic touchpads not only offer a sleek look but are also easier to clean — just a quick swipe with a sponge removes smudges and spills. In contrast, push buttons can trap dirt and grime, making them harder to clean. (A good middle ground is rubberized mechanical touchpads, which function like buttons but have a flatter design for easier maintenance.)For an even more streamlined appearance, consider integrated or hidden controls that are only visible when the door is open. While typically found on higher-end models, these designs can be worth the investment for both aesthetics and ease of cleaning. Plus, hidden controls are essential for paneled dishwashers that blend seamlessly with cabinetry.✔️ Child Lock: This feature prevents accidental starts or setting changes, ensuring the dishwasher operates as intended.When we test dishwashers, we assess the capacity and flexibility of all the racks, trays and baskets and evaluate how easy each dishwasher is to use, load and program.Which brand of dishwasher is most reliable?When it comes to the best appliance brands, LG, Miele, Bosch and GE Profile are all well-known for their reliability. These brands have proven to perform well in Good Housekeeping Institute testing, excelling in areas such as capacity, ease of use, loading, drying performance, energy efficiency, noise levels and more.Best Overall Miele Top Control Dishwasher with AutoDosBest ValueGE Profile UltraFresh Dishwasher with MicrobanNow 28% OffBest Under $500LG Front Control Dishwasher with SenseCleanNow 29% OffHow do I know if a dishwasher is energy-efficient?Appliances earn the Energy Star label from the U.S. Department of Energy and U.S. Environmental Protection Agency when they significantly exceed minimum government standards for energy and water efficiency. This designation indicates that the appliance conserves resources and costs less to operate over time.Another way to gauge energy use is by checking the Energy Guide label, which estimates the model’s annual energy cost for both electric and gas water heaters. It also shows how the model compares to similar ones in terms of energy efficiency.Some dishwashers also include water-saving features to reduce waste. These may include:Rinse-and-Hold Cycle: Eliminates the need to pre-rinse dishes by hand.Hard Food Disposer: Prevents food particles from clogging the system, reducing the need for extra rinsing.Upper/Lower Rack Wash: Directs water to specific sections of the dishwasher, conserving both water and energy when washing smaller loads.What is considered quiet for a dishwasher?Unlike many other appliances, dishwasher manufacturers disclose the decibel (dB) rating of each model based on standardized testing. If you don’t see this information in-store, check the manufacturer’s website. The quietest dishwashers — typically higher-end models — operate at 40 dBA or below, ensuring minimal noise disruption in your home.How much should I expect to spend on a dishwasher?You can find a basic dishwasher with a standard finish and a few essential cycles for under $500. However, at this price point, you’ll likely miss out on features like a wide variety of cycles, sleek controls, adjustable racks, a panel-ready design that blends with cabinetry or ultra-quiet operation. For these premium features, expect to spend between $1,000 and $1,500.When is the best time of year to buy a dishwasher?You’ll find the biggest appliance sales around major holidays like Presidents’ Day and Black Friday, when retailers offer deep discounts on appliances. These events often include extra promotions beyond the standard rebates available throughout the year.The worst time to purchase a new appliance is when you’re in a rush — like when your old one suddenly breaks. If you notice your dishwasher is nearing the end of its lifespan, start shopping proactively to take advantage of the best deals.How long do dishwashers last?A well-maintained dishwasher typically lasts 10 to 15 years with proper use and care. Most manufacturers provide a one-year full warranty, covering both parts and labor. For repairs, it’s best to use a manufacturer-authorized service to ensure proper parts and avoid potential warranty issues.Beyond the first year, many brands offer limited warranties on parts like electronic controls and racks, often for five years or more, while some provide lifetime coverage for stainless steel tubs and doors against rust. Before your full warranty expires, test all cycles and features to ensure everything functions properly. Always review a model’s warranty terms before purchasing.Related StoriesBrigitt is a writer, editor and craft stylist with nearly 15 years of experience. She specializes in lifestyle topics, including home, health, parenting, beauty, style, food, entertaining, travel and weddings. She has written for Glamour, People, Good Housekeeping, Women’s Health, Real Simple, Martha Stewart, Apartment Therapy, The Spruce, and more.Carolyn Forté brings more than 40 years of experience as a consumer products expert to her role as executive director of the Good Housekeeping Institute’s Home Care and Cleaning Lab. Using deep analytical testing and writing expertise in appliances, cleaning, textiles and organizational products, she produces cleaning and home care advice for GH, has authored numerous books and bookazines for the brand and partners with the American Cleaning Institute to co-produce the Discover Cleaning Summits. She holds a bachelor’s degree in family and consumer sciences from Queens College, City University of New York. More