15 Best 18 Inch Dishwashers, Compared
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Finding the best 18 Inch dishwashers requires balancing compact exterior dimensions with usable internal capacity. The COMFEE' 18-Inch Built-In Dishwasher takes the top spot because its 17.6-inch width holds an 8 place setting capacity alongside a stainless steel tub.
To help you find the right fit, we compared 15 models based strictly on specifications published on their listings. This guide helps you decide whether a built-in, portable, or countertop design best matches your kitchen space and plumbing layout.
Quick picks
The best fit for you
- You want a compact built-in model with flexible loading COMFEE' 18-Inch Built-In Dishwasher The 17.6-inch width provides an 8 place setting capacity with an adjustable upper rack and heated drying.
- You need dedicated utensil space and quiet operation Sharp 18-Inch Dishwasher with Third Rack This model features a dedicated third rack and operates at a 47 dB noise level.
- You need a portable dishwasher with faucet hookups SPT 18-Inch 8-Place Portable Dishwasher An included faucet adapter allows portable installation while supporting an 8 place setting capacity.
- You want a countertop model with a water tank SUNVIVIPRO 18-Inch Countertop Dishwasher A built-in water tank allows hookup-free operation inside a compact 17.3-inch tall countertop frame.
Our 15 picks
COMFEE' 18-Inch Built-In Dishwasher
Best for: compact kitchens needing flexible built-in capacity
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-in
- Capacity
- 8 place settings
- Wash Cycles
- 6 cycles
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub, Energy Star
This COMFEE' 18-inch built-in dishwasher fits compact kitchen cutouts with its 17.6-inch width and 32.4-inch height. You get an 8 place setting capacity inside a stainless steel tub, supported by an upper rack that adjusts by 1.97 inches. With six wash cycles, heated dry, and a sanitize option, it suits you if you need flexible built-in dishwashing in small spaces.
Pros
- Stainless steel tub with 8 place settings capacity
- Upper rack adjusts up to 1.97 inches to fit 13.78-inch plates below
- Six wash cycles with Heated Dry, Hi-Temp, and Sanitize options
- Slim 17.6-inch width with adjustable leveling legs
Cons
- Built-in design requires dedicated cabinetry and plumbing hookups
- Hi-Temp wash cycle maxes out at 136°F
Good fit if
- You have a 17.6-inch wide under-counter space for built-in installation.
- You want an adjustable upper rack to fit oversized dinnerware up to 13.78 inches.
- You need heated drying and sanitize functions in a compact format.
Skip if
- You need a portable or countertop model that connects directly to a faucet.
- You require water temperatures exceeding 136°F.
Verdict: COMFEE' 18-Inch Built-In Dishwasher delivers an 8 place setting capacity and a stainless steel interior in a compact 17.6-inch frame. Its adjustable upper rack and heated drying make it a practical, space-efficient built-in choice.
Midea 18-Inch Built-In Dishwasher
Best for: compact kitchens needing a black built-in dishwasher
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-in
- Capacity
- 8
- Wash Cycles
- 6
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub
This Midea 18-inch built-in dishwasher gives you an 8-place-setting capacity with a stainless steel tub in a compact 17.6-inch-wide black frame. It includes six wash programs, digital LED controls, and a heated dry function. The interior accommodates cookware up to 11 inches tall. If you need a slim, permanent under-counter dishwasher with high-temperature sanitizing cycles for a compact kitchen, this model fits standard narrow cabinetry openings cleanly.
Pros
- Stainless steel tub construction
- 8-place-setting capacity fits plates and cookware up to 11 inches tall
- Six wash programs plus Heated Dry, Hi-Temp, and Sanitize functions
- Digital control panel with LED display
Cons
- Heated dry does not function on Quick or Self-clean cycles
- Permanent built-in installation requires dedicated under-counter plumbing
Good fit if
- You need a 17.6-inch-wide built-in dishwasher with a black finish.
- You want an 8-place-setting capacity paired with a stainless steel interior.
- You need heated drying and high-temperature sanitizing cycles.
Skip if
- You need a portable or countertop model that connects directly to a sink faucet.
- You require water temperatures higher than the 136°F maximum on Hi-Temp mode.
Verdict: Midea 18-Inch Built-In Dishwasher in Black provides practical small-space cleaning with an 8-place-setting capacity, stainless steel interior, and heated dry cycle. It fits narrow cabinet cutouts neatly when you want permanent installation in a black finish.
Honeywell 18-Inch Built-In Dishwasher
Best for: ADA-compliant compact kitchen cutouts
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-In
- Capacity
- 8 place settings
- Wash Cycles
- 6 cycles
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub, Energy Star
The Honeywell 18-Inch Built-In Dishwasher fits compact kitchen spaces with its 18-inch width and 32.4-inch ADA-compliant height. Inside, you get an eight place setting capacity across three racks, including a top cutlery rack and a stainless steel tub. It features six wash programs ranging from quick wash to pots and pans, plus Energy Star certification. This model suits you if you need a slim, permanent under-counter installation.
Pros
- Stainless steel tub construction
- Three rack levels including a top cutlery rack
- Six wash programs with a 24-hour delay start option
- ADA-compliant height and Energy Star certified
Cons
- Requires permanent built-in installation
- Eight place setting capacity limits space for large pots
Good fit if
- You need an ADA-compliant under-counter dishwasher.
- You want a dedicated third rack for cutlery.
- You prefer a stainless steel wash tub.
Skip if
- You need a portable or countertop appliance.
- You require more than an eight place setting capacity.
Verdict: Honeywell 18-Inch Built-In Dishwasher provides an ADA-compliant footprint with three rack levels and a durable stainless steel tub. It delivers six practical wash cycles for space-constrained kitchens.
Honeywell 18-Inch Stainless Steel Dishwasher
Best for: compact kitchens needing multiple cycle options
- Width
- 18 Inch (what this guide is about)
- Capacity
- 8 place settings
- Wash Cycles
- 6
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub, Energy Star
- Dimensions
- 18 × 22.6 × 32 inches
View on Amazon: Honeywell 18-Inch Stainless Steel Dishwasher
This 18-inch Honeywell dishwasher provides an 8 place setting capacity across two racks with a removable cutlery basket. You get six wash cycles, including eco, heavy, rapid, and glass, inside a durable stainless steel tub. It meets Energy Star standards and features a 24-hour delay start timer. This unit suits you if you need a compact, energy-efficient dishwasher with flexible cycle selections for smaller kitchen spaces.
Pros
- Stainless steel tub interior
- Six wash programs including heavy, eco, and rapid
- Up to 24-hour delay start timer
- Energy Star certified
Cons
- Noise level in decibels is not specified
- Heated dry feature is not listed
Good fit if
- You need an 18-inch machine with a stainless steel tub.
- You want up to a 24-hour delay start timer.
- You wash daily loads of up to 8 place settings.
Skip if
- You need a verified low-decibel rating before buying.
- You require a listed heated dry function.
Verdict: Honeywell 18-Inch Stainless Steel Dishwasher delivers six wash cycles, Energy Star efficiency, and a stainless steel interior. It handles standard small-space dishwashing needs with convenient delay start scheduling.
SPT 18-Inch 8-Place Portable Dishwasher
Best for: renters needing portable hookups and high capacity
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Portable
- Capacity
- 8 Place Settings
- Wash Cycles
- 6 Wash Programs
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub, Energy Star
This 18-inch portable dishwasher gives you an 8-place-setting capacity with a stainless steel tub inside a standalone white cabinet. You connect it directly to your kitchen tap using the included faucet adapter. It features six wash programs: Heavy, Normal, Eco, Glass, 90 Min, and Rapid, plus an adjustable upper rack for larger plates. It suits households where under-counter installation is unavailable.
Pros
- Stainless steel tub interior
- Faucet adapter included for tap connection
- 6 wash programs including Rapid and Eco
- Adjustable upper rack for larger items
- 1 to 24-hour time delay start
Cons
- Heavy unit weight at 114 pounds
- White exterior finish only
Good fit if
- You need a freestanding unit that connects directly to a sink faucet.
- You want an 8-place-setting interior lined with stainless steel.
- You require an adjustable top rack to fit tall dinnerware.
Skip if
- You want a permanently installed under-counter model.
- You prefer a stainless steel exterior finish.
Verdict: SPT 18-Inch Portable Dishwasher provides an 8-place-setting capacity and durable stainless interior without needing permanent cabinet installation. The included faucet adapter and 24-hour delay timer deliver full-size utility in a mobile format.
SPT 18-Inch Energy Star Portable Dishwasher
Best for: renters seeking portable Energy Star dishwashing
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Portable
- Features
- Energy Star
- Color
- White
- Dimensions
- 23.6 × 17.6 × 35.6 inches
- Weight
- 118 pounds
This SPT unit gives you a freestanding dishwashing option with an Energy Star rating and a clean white finish. At 17.6 inches wide, 23.6 inches long, and 35.6 inches high, it operates as a portable machine rather than a permanent fixture. Weighing 118 pounds, it suits your kitchen if you need narrow 18-inch dishwashing capacity without remodeling your cabinetry for a built-in appliance.
Pros
- Portable installation type requires no under-counter cutout
- Energy Star certified for efficiency
- Compact 17.6-inch width fits narrow kitchen layouts
Cons
- Heavy portable profile weighing 118 pounds
- Only available in a white exterior finish
- Place setting capacity is not specified in published data
Good fit if
- You need a portable dishwasher that does not require cabinet installation.
- You prefer an Energy Star certified appliance in a white exterior.
- You have floor space measuring at least 17.6 inches wide and 23.6 inches deep.
Skip if
- You want a permanent built-in dishwasher installed beneath your countertops.
- You need a lightweight appliance that is easy to lift and move frequently.
Verdict: SPT 18-Inch Portable White Dishwasher delivers Energy Star efficiency in a freestanding design for kitchens lacking under-counter space. Its 17.6-inch width provides full-height dishwashing utility without modifying your existing cabinetry.
EdgeStar 18-Inch Built-In Dishwasher
Best for: compact kitchens needing heated dry cycle options
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-In
- Capacity
- 8 place settings
- Noise Level
- 52 dB
- Wash Cycles
- 6 cycles
- Color
- Stainless Steel
This built-in dishwasher from EdgeStar is designed for compact kitchens, fitting an 18-inch opening with a cutout width of 17.75 inches. You get an 8 place setting capacity across its racks, supported by six wash cycles and three wash options, including Sanitize and Heated Dry. Operating at 52 dB, it includes an integrated leakage sensor to cut water flow automatically, making it a reliable fit if you need narrow under-counter dishwashing.
Pros
- Six wash cycles plus Sanitize, Hi Temp, and Heated Dry options
- Built-in leakage sensor shuts off water flow upon leak detection
- Eight place setting capacity with silverware basket and cup tray
- Fits narrow 17.75-inch cutout spaces
Cons
- Operates at 52 dB, louder than quieter models on the market
- Requires permanent cabinet installation rather than portable use
Good fit if
- You need a built-in unit to fit a 17.75-inch opening or replace an old trash compactor.
- You want dedicated Heated Dry and Sanitize cycle options.
Skip if
- You require a portable dishwasher that connects directly to a faucet.
- You want an ultra-quiet dishwasher rated below 50 dB.
Verdict: EdgeStar 18-Inch Built-In Dishwasher provides solid compact cleaning with eight place settings, six wash programs, and automated leak protection. It is a dependable choice for tight under-counter installations where space is limited.
SUNVIVIPRO 18-Inch Countertop Dishwasher
Best for: hookup-free cleaning in compact kitchens
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Countertop
- Wash Cycles
- 6
- Target Space
- Apartments, RVs, Dorms
- Features
- Water Tank, Delay Start, Energy Star
- Color
- White
The SUNVIVIPRO 18-Inch Portable Countertop Dishwasher gives you compact cleaning without requiring permanent plumbing. Measuring 17.7 inches wide and weighing 29.8 pounds, it operates via a built-in 152-ounce water tank or direct faucet connection. You get six wash cycles, including a 29-minute quick wash, alongside a 167°F drying mode. It accommodates plates up to 12 inches, making it a practical option if you need flexible washing in small quarters.
Pros
- Built-in 152 oz water tank allows operation without direct plumbing hookup
- Internal rack accommodates dinner plates up to 12 inches wide
- Provides 6 cleaning programs including a 29-minute quick cycle
- High-temperature drying cycle reaches 167°F
Cons
- Consumes 17.7 by 17.3 inches of usable countertop workspace
- Manual water tank mode requires filling 152 oz for each wash cycle
Good fit if
- You need a portable cleaning unit that works without dedicated plumbing hookups.
- You regularly wash full-sized plates up to 12 inches in a compact space.
Skip if
- You prefer a permanently installed under-counter built-in dishwasher.
- You cannot sacrifice 17.7 inches of counter width beside your sink.
Verdict: SUNVIVIPRO 18-Inch Portable Countertop Dishwasher provides flexible dual-water filling options and six wash modes in a compact footprint. It functions as an adaptable cleaning solution when you lack dedicated under-counter plumbing.
SPT 18-Inch Portable Stainless Steel Dishwasher
Best for: portable dishwashing without cabinet installation
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Portable
- Capacity
- 8 place settings
- Wash Cycles
- 6 cycles
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub, Energy Star
View on Amazon: SPT 18-Inch Portable Stainless Steel Dishwasher
The SPT 18-Inch Portable Stainless Steel Dishwasher provides full dishwashing functionality without permanent installation under your counters. Measuring 17.6 inches wide and 35.6 inches high, this freestanding unit accommodates eight place settings across six wash programs. It features a stainless steel tub and Energy Star efficiency. This unit suits renters or homeowners who lack dedicated under-counter cutouts but still need an 18-inch wash capacity.
Pros
- Portable design requires no under-counter installation
- Durable stainless steel tub interior
- Eight place setting capacity
- Six wash programs to handle various soil levels
- Energy Star certified operation
Cons
- Heavier unit weighing 118 pounds to move
- Occupies floor space with a 23.6-inch depth
- No noise level rating provided in published specifications
Good fit if
- You need a portable dishwasher without cutting into kitchen cabinetry.
- You want an eight place setting capacity with a stainless steel tub.
- You prefer an Energy Star certified model with six wash cycles.
Skip if
- You need a built-in unit designed for permanent under-counter installation.
- You cannot manage rolling or storing a 118-pound appliance.
Verdict: SPT 18-Inch Portable Stainless Steel Dishwasher is an effective freestanding solution if you need eight place settings and a stainless tub without modifying kitchen cabinets.
SPT 18-Inch Built-In Dishwasher with Heated Drying
Best for: compact kitchens needing heated drying cycles
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-In
- Capacity
- 8 Place Settings
- Wash Cycles
- 6 Wash Programs
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub, Heated Drying, Energy Star
View on Amazon: SPT 18-Inch Built-In Dishwasher with Heated Drying
This 18-inch built-in dishwasher from SPT provides an 8-place-setting capacity suited for compact kitchen spaces. It features a stainless steel tub, six wash programs, and a heated drying cycle. You get a 1-to-24-hour delay start timer and rinse aid reminders on the display. It suits you if you need a permanent under-counter appliance that fits a standard 18-inch opening while offering dedicated heated drying for your dishes.
Pros
- Heated drying function during the drying cycle
- Stainless steel tub interior
- 1 to 24-hour delay start programming
- Six wash programs for varied cleaning needs
Cons
- Operating sound level decibel rating is not listed
- Requires permanent built-in cabinet installation
- Capacity limited to 8 place settings
Good fit if
- You need an 18-inch built-in dishwasher for an under-counter cutout.
- You want a heated drying cycle to help dry tableware.
- You prefer an interior stainless steel tub.
Skip if
- You want a portable or countertop unit that requires no installation.
- You need a verified decibel noise rating before purchasing.
- You need space for more than 8 place settings.
Verdict: SPT 18-Inch Built-In Dishwasher with Heated Drying delivers core wash performance with six cycles, a stainless tub, and dedicated heat drying. It fits standard narrow kitchen cutouts where built-in installation is required.
Sharp 18-Inch Dishwasher with Third Rack
Best for: compact kitchens needing dedicated cutlery loading
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-In
- Capacity
- 8 place settings
- Noise Level
- 47 dB
- Wash Cycles
- 6 wash cycles
- Tub Material
- Stainless steel
This built-in unit measures 17.7 inches wide and holds 8 place settings across three distinct racks. It operates at 47 dB and features a stainless steel interior alongside six wash cycles and four option settings. Independent upper and lower wash zones let you run half loads when needed. It suits you if you need a narrow built-in machine with dedicated utensil shelving and flexible cycle controls for smaller kitchen spaces.
Pros
- Dedicated third rack for flatware and utensils
- Quiet 47 dB operating noise level
- Durable stainless steel interior tub
- Independent upper or lower zone wash options
Cons
- Built-in installation requires dedicated under-counter cabinetry
- 8 place setting limit compared to full-size units
Good fit if
- You want a dedicated cutlery rack in an 18-inch width.
- You require quiet 47 dB performance in an open kitchen layout.
- You frequently run half loads using independent rack zones.
Skip if
- You need a portable or countertop unit that requires no cabinet installation.
- You need a capacity larger than 8 place settings.
Verdict: Sharp 18-Inch Dishwasher with Third Rack provides 47 dB operation and flexible zone cleaning in a narrow 17.7-inch footprint. Its dedicated top rack frees up space in the lower baskets for daily cookware.
SPT 18-Inch Built-In Dishwasher
Best for: gray kitchens needing built-in heated drying
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-In
- Capacity
- 8
- Wash Cycles
- 6
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub, Heated Drying, Energy Star
This built-in unit from SPT measures 18 inches wide and holds 8 place settings. It features a stainless steel tub, heated drying, and Energy Star certification. You can choose from 6 wash programs: Normal, Heavy, Energy, Glass, Quick, and Rinse. With its gray exterior and top-mount design, this compact machine suits small kitchens where you need dedicated drying heat.
Pros
- Stainless steel interior tub
- Heated drying cycle option
- 6 wash programs including Quick and Rinse
- Energy Star certified
- 8 place setting capacity
Cons
- Sound level rating not listed in specifications
- Requires permanent built-in plumbing and cabinet installation
Good fit if
- You need an 18-inch built-in dishwasher with heated drying.
- You want an Energy Star certified unit with a stainless steel tub.
- You wash up to 8 place settings per cycle.
Skip if
- You require a portable dishwasher that hooks up to a sink faucet.
- You need capacity for more than 8 place settings.
Verdict: SPT 18-Inch Built-In Dishwasher with Heated Drying delivers 6 wash programs and an Energy Star rating in an 18-inch footprint. It provides reliable stainless steel construction and active drying heat for compact installations.
SPT 18-Inch Portable White Dishwasher
Best for: compact spaces needing faucet-connected dishwashing
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Portable
- Capacity
- 8
- Wash Cycles
- 6
- Tub Material
- Stainless Steel
- Features
- Stainless Steel Tub, Energy Star
This is an 18-inch portable dishwasher with a white finish and a stainless steel interior. It holds up to eight place settings and offers six wash programs, including Heavy, Normal, Eco, Glass, 90 Min, and Rapid. You connect it via the included faucet adapter, so you do not need permanent plumbing. It suits you if you need a freestanding machine with an adjustable upper rack for compact kitchen layouts.
Pros
- Stainless steel interior
- Includes faucet adapter for setup
- Adjustable upper rack fits larger cookware
- Six wash programs with 1-to-24-hour delay start
Cons
- Heavy unit at 114 pounds
- Requires faucet connection during use
Good fit if
- You need a portable dishwasher that hooks up to your kitchen faucet.
- You want an 18-inch machine with an eight place setting capacity.
- You require an adjustable rack to fit taller pots or plates.
Skip if
- You want a permanent built-in under-counter installation.
- You cannot manage a unit weighing 114 pounds.
Verdict: SPT 18-Inch Portable White Dishwasher provides eight place settings and six wash cycles without requiring under-counter plumbing. The included faucet adapter and stainless steel tub make it a practical choice for freestanding kitchen setups.
SPT 18-Inch Built-In Dishwasher with Heated Drying
Best for: compact kitchens needing heated drying cycles
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-In
- Capacity
- 8
- Noise Level
- 52 dBA
- Wash Cycles
- 6
- Tub Material
- Stainless Steel
View on Amazon: SPT 18-Inch Built-In Dishwasher with Heated Drying
This 18-inch built-in dishwasher gives you an 8-place-setting capacity inside a stainless steel tub. It features six wash programs, including Heavy, Energy, and Quick cycles, along with a dedicated heated drying option. Operating at 52 dBA, it fits under standard 33-inch-high counters. If you want a compact built-in unit with active heated drying and a 1 to 24-hour delay start, this model matches your kitchen requirements.
Pros
- Stainless steel interior tub
- Dedicated heating function during the drying cycle
- Six wash programs including Normal, Heavy, Energy, Glass, Quick, and Rinse
- Delay start feature configurable from 1 to 24 hours
Cons
- 52 dBA operating noise level
- Requires permanent built-in cabinet installation
Good fit if
- You want an 18-inch built-in model that includes a heated dry cycle.
- You need flexible cycle scheduling using a 1 to 24-hour delay timer.
- You want an 8-place-setting interior with a stainless steel tub.
Skip if
- You need an ultra-quiet dishwasher rated below 50 dBA.
- You prefer a portable or countertop unit that requires no under-counter installation.
Verdict: SPT 18-Inch Built-In Dishwasher with Heated Drying provides 8 place settings of capacity and six wash cycles in an under-counter format. It is a dependable choice if you prioritize a stainless steel tub and active heated drying.
Avanti 18-Inch 53dB Built-In Dishwasher
Best for: quiet ADA-compliant compact kitchen installations
- Width
- 18 Inch (what this guide is about)
- Installation Type
- Built-In
- Capacity
- 8
- Noise Level
- 53dB
- Features
- Energy Star, Quiet
- Color
- White
This Avanti built-in dishwasher gives you an 18-inch profile designed for compact spaces. It operates at 53 decibels and accommodates up to 8 standard place settings across nylon-coated racks. You get six automatic wash cycles alongside sanitize, high-temperature, and eco half-load settings. Standing at 32.25 inches tall, the unit meets ADA compliance standards, making it a practical fit if you need accessible, quiet under-counter dishwashing.
Pros
- 53dB operating noise level
- 8 standard place setting capacity with silverware basket and cup tray
- Six automatic wash cycles plus sanitize and eco half-load options
- ADA-compliant height at 32.25 inches
Cons
- Built-in design requires dedicated cabinet cutouts and direct plumbing
- Limited to 8 place settings compared to 24-inch full-size units
Good fit if
- You need an ADA-compliant under-counter installation.
- You want cycle choices like delicate, intensive, and eco half-load.
- You wash dinnerware for up to 8 place settings per cycle.
Skip if
- You need a portable dishwasher on wheels.
- You require space for more than 8 place settings.
Verdict: Avanti 18-Inch 53dB Built-In Dishwasher pairs ADA compliance with 53dB operation and eight place settings. It handles daily dishwashing reliably in tight kitchen spaces.
Specifications side by side
| Spec | COMFEE' 18-Inch Built-In Dishwasher | Midea 18-Inch Built-In Dishwasher | Honeywell 18-Inch Built-In Dishwasher | Honeywell 18-Inch Stainless Steel Dishwasher | SPT 18-Inch 8-Place Portable Dishwasher | SPT 18-Inch Energy Star Portable Dishwasher | EdgeStar 18-Inch Built-In Dishwasher | SUNVIVIPRO 18-Inch Countertop Dishwasher | SPT 18-Inch Portable Stainless Steel Dishwasher | SPT 18-Inch Built-In Dishwasher with Heated Drying | Sharp 18-Inch Dishwasher with Third Rack | SPT 18-Inch Built-In Dishwasher | SPT 18-Inch Portable White Dishwasher | SPT 18-Inch Built-In Dishwasher with Heated Drying | Avanti 18-Inch 53dB Built-In Dishwasher |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Installation Type | Built-in | Built-in | Built-In | not specified | Portable | Portable | Built-In | Countertop | Portable | Built-In | Built-In | Built-In | Portable | Built-In | Built-In |
| Width | 17.6 inches | 17.6 inches | 18 inches | 18-Inch | 18″ | 18 in | 18 in | 18 inches | 18 in | 18″ | 17.7 inches | 18″ | 18 inches | 18 inches | 17.75" |
| Capacity | 8 place settings | 8 | 8 place settings | 8 place settings | 8 Place Settings | not specified | 8 place settings | not specified | 8 place settings | 8 Place Settings | 8 place settings | 8 | 8 | 8 | 8 |
| Noise Level | not specified | not specified | not specified | not specified | not specified | not specified | 52 dB | not specified | not specified | not specified | 47 dB | not specified | not specified | 52 dBA | 53dB |
| Wash Cycles | 6 cycles | 6 | 6 cycles | 6 | 6 Wash Programs | not specified | 6 cycles | 6 | 6 cycles | 6 Wash Programs | 6 wash cycles | 6 | 6 | 6 | not specified |
| Tub Material | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | not specified | not specified | not specified | Stainless Steel | Stainless Steel | Stainless steel | Stainless Steel | Stainless Steel | Stainless Steel | not specified |
| Target Space | not specified | not specified | not specified | not specified | not specified | not specified | not specified | Apartments, RVs, Dorms | not specified | not specified | not specified | not specified | not specified | not specified | not specified |
| Features | Stainless Steel Tub, Energy Star | Stainless Steel Tub | Stainless Steel Tub, Energy Star | Stainless Steel Tub, Energy Star | Stainless Steel Tub, Energy Star | Energy Star | not specified | Water Tank, Delay Start, Energy Star | Stainless Steel Tub, Energy Star | Stainless Steel Tub, Heated Drying, Energy Star | Third Rack | Stainless Steel Tub, Heated Drying, Energy Star | Stainless Steel Tub, Energy Star | Stainless Steel Tub, Heated Drying, Energy Star | Energy Star, Quiet |
| Color | White | Black | White | Stainless Steel | White | White | Stainless Steel | White | Stainless Steel | Stainless Steel | Stainless Steel | Gray | White | Stainless Steel | White |
| Dimensions | 22.6 × 17.6 × 32.4 inches | 22.6 × 17.6 × 32.4 inches | 22.6 × 18 × 32.4 inches | 18 × 22.6 × 32 inches | 24 × 18 × 36 inches | 23.6 × 17.6 × 35.6 inches | 17.6 × 22.4 × 32.5 inches | 17.7 × 18 × 17.3 inches | 23.6 × 17.6 × 35.6 inches | 23 × 18 × 33 inches | 22.7 × 17.7 × 32.1 inches | 17.6 × 22.6 × 32.4 inches | 24 × 18 × 36 inches | 23 × 18 × 33 inches | 24.3 × 17.8 × 32.3 inches |
| Weight | 54.7 pounds | 54.6 pounds | 70 pounds | 70 pounds | 114 pounds | 118 pounds | 62.8 pounds | 29.8 pounds | 118 pounds | 54 pounds | 76.8 pounds | 54 pounds | 114 pounds | 54 pounds | 61 pounds |
| Model | CDF18A2BWW | MDF18A1ABB | HDS18W | HDS18SS | SD-9263WA | SD-9263W | BIDW1802SS | ZDW002 | SD-9263SS | SD-9254SSA | SDW4523MS | SD-9254SS | SD-9263WB | SD-9254SSB | DWF18V0W |
| Size | not specified | Energy Star | 18 Inch | 18 inch | not specified | 18″ | not specified | not specified | 18″ | not specified | not specified | 18″ | not specified | not specified | 53dB |
Is 18 Inch Width Worth It for Your Kitchen?
An 18-inch width fits standard narrow cabinet cutouts, typically requiring a 17.6 to 18-inch space. This size balances compact exterior dimensions with practical 8-place-setting capacity. You get full wash cycles and heated drying in a footprint that suits small kitchens, apartments, or RVs. Portable models connect to faucets, while built-ins integrate seamlessly. The narrower frame saves floor space without sacrificing core cleaning performance or stainless steel durability.
Worth it if
- You have a narrow kitchen with limited under-counter space
- You need 8 place settings in a compact footprint
- You are installing in an apartment or RV
Skip it if
- You need more than 8 place settings per cycle
- Your cabinet cutout is wider than 18 inches
- You prefer a full-size 24-inch dishwasher
How we picked these models
We selected these 15 dishwashers because their listings explicitly state an 18-inch width. This measurement defines the cabinet cutout you need for installation. We focused on published specifications to ensure accuracy. We did not test the units ourselves. All details come directly from the product data provided by the manufacturers.
The list is ordered by availability first. Next, we used the Amazon sales rank to prioritize better-selling items. We also considered how many of our key criteria each spec sheet met. This approach keeps the guide practical and focused on the physical dimensions you must match.
How to Choose the Right 18 Inch Dishwasher
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Check installation type
Your kitchen layout determines whether you need a built-in or portable unit. Built-in models, like the COMFEE' 18-Inch Built-In Dishwasher, fit into fixed cabinet cutouts and require permanent plumbing connections. Portable options, such as the SPT 18-Inch Portable Dishwasher, connect to your sink faucet and do not require cabinet modification. Countertop units, like the SUNVIVIPRO, sit on counters and often use water tanks. Selecting the correct installation type ensures the unit fits your physical space and plumbing setup.
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Verify width dimensions
An 18-inch width is standard for narrow kitchens, but actual exterior dimensions vary. The Honeywell 18-Inch Built-In Dishwasher measures exactly 18 inches wide, while the COMFEE' model is 17.6 inches. You must measure your cabinet cutout carefully to ensure the unit fits without forcing it. A width that is too large will not fit, while a slightly smaller width may leave gaps. Always compare the listed width specification against your available space to avoid installation issues.
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Confirm capacity needs
Most 18-inch models offer an 8-place-setting capacity, which suits small households or couples. The Sharp 18-Inch Dishwasher with Third Rack also provides this capacity but adds a dedicated top rack for utensils. If you have larger pots, verify if the interior racks are adjustable. The Honeywell model features three rack levels for flexible loading. Choosing the right capacity ensures you can clean your daily dishes without running multiple cycles, saving water and time.
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Look for heated drying
Heated drying ensures dishes come out dry without manual towel drying. The SPT 18-Inch Built-In Dishwasher with Heated Drying includes this feature for reliable results. The COMFEE' model also uses heated drying to improve performance. Not all models include this, so check the attributes list. If you prioritize dry dishes, select a unit with explicit heated drying specifications. This feature is particularly useful in humid environments or when washing plastic items that do not dry well with air drying.
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Consider noise levels
Noise levels matter if your kitchen is near living spaces. The Avanti 18-Inch 53dB Built-In Dishwasher operates at 53 decibels, making it one of the quieter options. The Sharp model features 47 dB operation, which is even quieter. Lower decibel ratings mean less disruption during meal prep. Check the specifications for decibel ratings if quiet operation is important to you. Selecting a quieter model ensures your dishwasher does not become a source of background noise in your home.
Frequently asked questions
Do all 18-inch dishwashers have the same height?
No, heights vary by installation type and model. Built-in units typically measure around 32.4 inches tall, such as the COMFEE' and Midea models. Portable freestanding versions are taller, reaching 36 inches like the SPT portable options. Countertop models are much shorter, with the SUNVIVIPRO standing only 17.3 inches high. Always check the specific height spec before measuring your cabinet or counter space.
Which 18-inch dishwasher is best for renters?
Portable models are the best choice for renters because they do not require permanent cabinet installation. The SPT 18-Inch Portable Dishwasher connects directly to your sink faucet using an included adapter. This allows you to move the unit when you relocate. Countertop options like the SUNVIVIPRO also work well if you lack under-counter plumbing entirely.
Is there a quiet option for an 18-inch dishwasher?
Yes, the Avanti 18-Inch 53dB Built-In Dishwasher is designed for quiet operation. It operates at 53 decibels, making it suitable for open-plan living spaces. This model also meets ADA compliance standards. Most other listed models do not specify a decibel rating in their published specifications, so check the details if noise is a priority.
Do 18-inch dishwashers include heated drying cycles?
Many models do include heated drying, but it depends on the specific unit. The SPT 18-Inch Built-In Dishwasher with Heated Drying features this function explicitly. The COMFEE' model also offers heated drying. However, some portable or budget models may rely on air drying. Always verify the features list for heated drying if you want dishes dry without manual wiping.
What is the difference between built-in and portable 18-inch dishwashers?
Built-in models fit into fixed cabinet cutouts and require permanent plumbing connections. They usually measure around 17.6 inches wide and 32.4 inches high. Portable units are freestanding, often taller at 36 inches, and connect to the sink faucet. Portable models offer flexibility for spaces without under-counter plumbing, while built-ins provide a seamless look in permanent kitchens.
Which 18-inch dishwasher has a third rack?
The Sharp 18-Inch Dishwasher with Third Rack is the only model in this list featuring a dedicated third rack. This top rack provides flexible zone cleaning and dedicated space for cutlery. It frees up room in the lower baskets for larger cookware. This feature is useful if you need to load utensils separately from plates and bowls.
Are there black or gray finishes available for 18-inch dishwashers?
Yes, several models offer alternative finishes beyond white or stainless steel. The Midea 18-Inch Built-In Dishwasher comes in a black finish. The SPT 18-Inch Built-In Dishwasher with Heated Drying is available in gray. These options allow you to match your kitchen cabinetry or appliance aesthetic more closely than standard white or stainless models.