Dishwasher Buying Guide: Size, Racks, Noise, and Drying

Bosch SHE53C85N key specifications

Reviewed reported that the SHE53C85N dried most items in its test load completely, with some remaining moisture on others. The model does not use mineral-assisted drying.

Best for: households with mixed plates, glasses, pots, and flatware; buyers wanting a third rack without needing mineral-assisted drying; kitchens where moderate noise is acceptable.

Limitations: The Bosch SHE53C85N does not offer CrystalDry. Bosch lists 269 kWh/year of standardized energy consumption and does not classify this model as ENERGY STAR certified. The nominal 24-inch width does not establish installation fit.

Bosch SHP78CM5N key specifications

The SHP78CM5N has the same published appliance dimensions and required cutout as the SHE53C85N. The differences are drying, rack flexibility, and wash controls rather than extra nominal width or place-setting capacity.

Best for: open-plan kitchens; frequently washed plastic lunch boxes; people who run the dishwasher during evening conversations; buyers who value specialized drying.

Limitations: Some optional settings on the SHP78CM5N use Home Connect. Plastic containers must still be labeled dishwasher-safe.

KitchenAid KDTM404KPS key specifications

The 26 3/4-inch quoted depth includes the handle. KitchenAid separately lists a 24 1/2-inch closed depth excluding the handle and approximately 51 inches of front-to-back space with the door opened 90 degrees. These dimensions matter beside an island or narrow walkway.

KitchenAid specifies an adjustable middle rack and self-cleaning filtration. Reviewed reported effective Normal and Tough washing on its KDTM404KPS test unit, with long cycle times; those observations describe the tested configuration and programs.

Best for: households that wash many coffee mugs, ramekins, oversized utensils, and cooking tools; people wanting flexible rack space without relying on a cutlery basket alone.

Limitations: The bar handle projects beyond the cabinet depth, and KitchenAid does not list this model as ENERGY STAR qualified. Check the clearance for tall stockpots with the rack in each position.

Whirlpool WDP540HAMZ key specifications

Whirlpool lists the WDP540HAMZ with a fixed upper rack. The installed price will also depend on required parts, electrical connections, and labor.

Best for: renters or homeowners replacing a failing basic machine; closed kitchens; buyers whose loads fit two racks and who do not need an adjustable upper rack.

Limitations: The WDP540HAMZ has neither a third rack nor an adjustable upper rack, restricting how tall dishes and pots can be arranged. Its 55 dBA rating also makes it a less attractive choice when a kitchen opens directly into living space.

Bosch SPE53C55UC key specifications

Unlike a standard 24-inch machine, the SPE53C55UC is designed for a narrow cutout. Check the full installation drawing, including drainage, power, and door-swing clearance.

Best for: small kitchens where cabinet width cannot readily change; one- or two-person households with moderate dish loads; narrow replacement installations.

Limitations: The SPE53C55UC has less room for wide cookware than the larger SHE53C85N and uses PureDry rather than CrystalDry. Bosch's specification sheet lists an NSF-certified Sanitize option, while its online product page says otherwise; confirm the certification documents for the supplied unit if this is a requirement.

Should you buy an 18-inch or 24-inch dishwasher?

A 24-inch dishwasher generally offers more space for large mixed loads when the cabinet opening allows it. An 18-inch model works where width is limited. In this comparison, the Bosch SPE53C55UC is rated for 10 place settings, while the Bosch SHE53C85N is rated for 16. Both figures are standardized capacity ratings, so also check whether your cookware fits.

Is a third rack worth it?

A third rack can free space below by holding flatware, measuring spoons, and spatulas. A deeper rack with dedicated wash jets can also hold selected cups and bowls. If you often load tall stemware or stockpots, check whether the third rack reduces vertical clearance or can be removed.

How many place settings do you need?

Place-setting capacity uses standardized dishes. Wide pasta bowls, baking sheets, bottles, and pans occupy space differently. Examine tine spacing and usable rack height instead of relying on capacity alone. ENERGY STAR also distinguishes standard-capacity and compact-capacity dishwashers in its efficiency criteria.

Should you pay extra for heated dry or CrystalDry?

Advanced drying is most useful when plastic storage containers make up a large share of your loads or you want to put dishes away promptly. If plastic drying is rarely a problem, rinse aid and correct loading may meet your needs without paying for a specialized system.

Is a sanitize cycle necessary?

A sanitize cycle can be useful for a specific hygiene need, but the label alone does not establish independent certification. NSF/ANSI 184 certification for a residential dishwasher requires at least a 99.999% reduction in bacteria and a final rinse of 150 degrees F on the certified sanitizing cycle. Bosch identifies the SHE53C85N's Sanitize option as NSF certified. Verify the certification for the exact model and configuration rather than relying on a cycle name. Sanitization does not replace normal cleaning or safe food handling.

Does ENERGY STAR matter when buying a dishwasher?

ENERGY STAR certification is model-specific. Its standard-capacity dishwasher criteria specify no more than 240 kWh/year and 3.2 gallons per cycle under the applicable test procedure; compact-capacity limits differ. The yellow EnergyGuide label helps compare estimated annual energy use and operating cost among similar machines.

Bosch lists the SHP78CM5N at 240 kWh/year with ENERGY STAR certification and the SHE53C85N at 269 kWh/year without certification. These are standardized estimates, not the exact energy use of every household.

What about filters and maintenance?

Check the owner's manual for filter care. Food debris and blocked filters can impair washing and create odors. KitchenAid lists a self-cleaning filter for the KDTM404KPS, while Whirlpool specifies triple filtration for the WDP540HAMZ. Maintenance steps differ by design.

What is the difference between an 18-inch and a 24-inch dishwasher?

The main differences are cabinet width and usually capacity. The Bosch SPE53C55UC needs a 17 3/4-inch-wide cutout and is rated for 10 place settings; the 24-inch Bosch SHE53C85N needs a 24-inch-wide cutout and is rated for 16. Compare complete installation dimensions, not nominal width alone.

Is a third rack better than a silverware basket?

A third rack can free lower-rack space for plates and pans. A removable silverware basket is convenient for loading many utensils together. Deep third racks with wash jets, such as the one in the KitchenAid KDTM404KPS, can also accommodate selected mugs and bowls.

Do I need an adjustable upper rack?

An adjustable upper rack helps when you alternate between tall glasses and large plates. Moving it changes clearance above and below. Check how the mechanism works with dishes loaded and make sure tall items clear the spray arms. The Whirlpool WDP540HAMZ does not offer this adjustment.

Why does a dishwasher leave plastic containers wet?

Plastic retains less heat than ceramic or metal, making evaporation more difficult. Rinse aid, tilted loading, and a suitable drying program can help. For frequent plastic loads, consider a dedicated drying feature such as CrystalDry and check how the model handles your usual container shapes.

Do I need rinse aid if I use all-in-one dishwasher pods?

Often, yes. Bosch's care guidance says a separate rinse aid can improve drying even when combined detergent contains a rinse-aid ingredient. If dishes have droplets or spots, check the dispenser level and dose setting and follow the appliance instructions.

Are ENERGY STAR dishwashers always more expensive?

No. ENERGY STAR certification sets energy and water performance criteria, not a price tier. Compare model-specific labels alongside purchase and installation costs. Bosch lists the SHP78CM5N and SPE53C55UC as certified but not the SHE53C85N.

Is a sanitize cycle the same as NSF certification?

No. A button labeled "Sanitize" does not establish independent certification. NSF/ANSI 184 evaluates sanitization performance on the certified cycle. Check the exact model listing, not just the product series or the cycle name.

How much should I budget beyond the dishwasher price?

Include required installation parts, labor, and old-appliance removal in the budget. Water, drain, or electrical connections may need changes, and a tight cabinet may need modification. Ask for an itemized installed quote before comparing two appliance prices.

How long should a normal dishwasher cycle take?

There is no universal duration for a Normal cycle. Soil sensing, water conditions, selected options, and drying settings affect the time. Consult the model manual for program durations and account for any selected extra-dry or sanitizing options. Check the programs you expect to use.

Independent product testing and comparison

• Reviewed: Bosch 800 Series SHP78CM5N laboratory review.

• Reviewed: Bosch 300 Series SHE53C85N laboratory review.

• Reviewed: KitchenAid KDTM404KPS hands-on review.