An 18 inch dishwasher is a slimline built-in machine that measures roughly 17.5 to 18 inches wide while keeping the full 34-inch height and 22 to 24-inch depth of a standard dishwasher. It washes about 8 place settings instead of 14 to 16, and it drops into a narrow cabinet opening or the cavity a trash compactor used to occupy. If your kitchen has no 24-inch cabinet, this is the size that makes a dishwasher possible at all.
We spent weeks comparing every 18 inch dishwasher that clears a 4.0 rating and a real review count, then sorted them by the things that actually decide whether a small kitchen install works. The details that matter most are the cutout width, the noise rating, and whether the heated dry gets dishes dry without a towel. Price changes daily, so use the buttons to check current listings rather than trusting any number written here.
The best 18 inch dishwashers for small kitchens fall into three groups. The EdgeStar BIDW1802SS is the one we would install first, because it publishes a cutout width you can measure against and its feature set is unusually complete. The Midea 18 Inch Built-in is the better value if service support worries you less than the sticker. The Frigidaire FFBD1831UB is the pick when you need ADA compliance or an NSF certified sanitize cycle.
One thing no competitor on the search page does is quantify the trade-off. For a couple, 8 place settings covers roughly four or five loads a week. A family of four is closer to nine or ten loads. That is the real difference between an 18-inch and a 24-inch machine, and it is manageable for one or two people and genuinely frustrating for five or more.
Table of Contents
Top 3 Picks for 18 inch dishwashers for small kitchens (October 2026)
EdgeStar BIDW1802SS
- 17.75 inch cutout width
- 8 place settings
- 52 dBA
- 6 wash cycles
- leakage sensor
Midea 18 Inch Built-in
- 17.6 inch body
- 8 place settings
- 52 dBA
- 136F hi-temp sanitize
- adjustable legs
7 best 18 inch dishwashers for small kitchens in 2026
Every model below holds 8 place settings, which tells you the width does the work here. The columns that separate them are cutout width, dBA, drying hardware and cycle count.
| Product | Specifications | Action |
|---|---|---|
| EdgeStar BIDW1802SS |
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| Midea 18 Inch Built-in |
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 SPT SD-9263SS Portable |
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| Frigidaire FFBD1831UB |
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 Honeywell HDS18W |
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 SPT SD-9254SSB Built-in |
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 COMFEE’ 18 Inch Built-in |
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1. EdgeStar BIDW1802SS – Easiest Fit and Best Overall
EdgeStar BIDW1802SS 18 Inch Wide 8 Place Setting Built-In Dishwasher
17.75 inch cutout width
8 place settings
52 dBA
62.8 pounds
234 kWh per year
Pros
- 17.75 inch cutout fits tight 1950s to 1970s openings
- Cleans heavily soiled loads without rewashing
- Stainless tub and racks with a leakage sensor
- LED display shows remaining cycle time
Cons
- Heated dry leaves dishes wet
- Empty drying agent reservoir throws an E4 error and blocks a cycle
- Drain plumbed from the front without the optional install kit
Of the seven machines here, this is the one we kept coming back to. The cutout spec is 17.75 inches, and EdgeStar is the only brand here that publishes a cutout width, height and depth you can measure against directly. Owners in older homes repeatedly describe dropping it into an existing cavity without a remodel, and it also works as a direct replacement for a trash compactor.
Cleaning is the part that surprised us. Reviews describe it handling heavily soiled loads without a second pass, and the six programs cover Heavy, Normal, ECO, Glass, Rapid and Rinse, with Sanitize, Hi Temp and Heated Dry as separate options. At 52 dBA the pump hum is brief and mostly noticeable only at the start and end of a cycle.
Two things to plan around. First, drying is the weak point: owners report wet dishes at the end of most cycles, so budget for a drying agent and expect to hand-dry plastics. Second, an empty drying-agent reservoir triggers an E4 error and some owners had to reset the machine at the household breaker to clear it. That single fault accounts for most of the one-star reviews.
The stainless tub, stainless racks and leakage sensor add up to a feature set you would normally pay more for. If you take one thing from this roundup, take the 17.75-inch cutout figure to your tape measure before you shop anything else.
When the EdgeStar is the right call
This is the pick for a household of one or two in a fixed kitchen where cabinet width is the binding constraint. It suits older narrow openings that will not take 17.6 inches of body plus a side gap, and it works when the only available cavity is a former trash compactor bay.
If your kitchen already has a full 24-inch opening, do not force a slimline into it. The smaller interior buys you nothing there.
When to pick something else
Skip it if wet dishes bother you, because there is no auto door-open drying here and the heating element is modest. Skip it if you wash big pots on a schedule, since anything that does not fit the 8-place-setting cavity still goes in the sink by hand.
Also reconsider if your household runs more than about six loads a week. At that volume the capacity feels tight, and a Midea or COMFEE’ with an adjustable upper rack gives you more usable space for the same footprint.
2. Midea MDF18A1AST – Best Value Built-in
Midea 18 Inch Built-in Dishwasher, 8 Place Settings, Stainless Steel Tub
17.6 inch body
8 place settings
52 dBA
54.6 pounds
Hi-temp to 136F
Pros
- Body fits existing 18 inch openings
- Entry cost with build quality that feels higher
- Heated dry works outside the rapid and self-clean cycles
- Handles pots pans bakeware and baby bottles
Cons
- Service and repair scheduling criticized for multi-week delays
- Some units arrived with an E4 overflow error from a sump pump defect
- A full day of dishes fills the cavity
This is the pick when you want a built-in machine and the entry cost matters more than the badge. Owners who receive a working machine describe the door and drawer hardware as heavier and more solid than the price suggests, and the stainless tub cleans across six programs including a dedicated Hi-Temp hygiene cycle that holds water at up to 136F.
At 17.6 inches wide and 32.4 inches tall with adjustable legs, it drops into a standard 18-inch opening without drama. It handles plates, pots and pans up to 11 inches high, and 15.5 gallons per hour of water consumption across a cycle is reasonable for the class.
The one serious complaint pattern is support, not performance. Several reviews describe E4 overflow errors on delivery tied to a sump pump housing defect, along with a slow and disorganized refund and technician process. If you can live with a service call taking weeks, the machine itself earns its spot in a small kitchen.
Heated dry performs well here except on the Rapid and Self-Clean cycles, which is better than most slimline machines manage. Use dishwasher detergent only, since regular dish soap causes problems in the sump.
Who the Midea suits
It suits a couple or a small family in a rental or a first apartment where you want a real built-in without a premium. It is also a good match for anyone who cooks daily but loads modest amounts, since it clears bakeware and baby bottles in one pass.
Second on our list, we would still install the EdgeStar first because it publishes a cutout width and adds a leakage sensor, which matters in an apartment.
Who should skip it
Do not buy it if you need a service response inside a week or two, because the scheduling complaints are consistent rather than isolated. Do not buy it if you need an adjustable upper rack, since this model does not offer one.
And if you are a household of three or more cooking most nights, plan for two loads a day. Capacity is the real ceiling at 8 place settings, not the machine’s quality.
3. SPT SD-9263SS – Best 18 Inch Pick for Renters
SPT SD-9263SS 18″ Wide Portable Stainless Steel Dishwasher with ENERGY STAR, 6 Wash Programs, 8 Place Settings and Stainless Steel Tub
Freestanding 17.64 inch wide
8 place settings
52 dBA
118 pounds
237 kWh per year
Pros
- No cabinet work needed
- hooks to a faucet and drains to a sink
- Stainless tub and racks with ENERGY STAR rating
- Six wash programs with full panel controls
Cons
- 35.6 inches tall and 118 pounds
- awkward to move
- 5 gallons of water per cycle is high for the class
- Large pots and bulk items do not fit
This is the only portable 18 inch machine in the group, and that is exactly why it earns a place. The hookup design uses a faucet adapter and a 3-foot drain hose, so you can put a dishwasher in a rental, an RV or a small kitchen without touching cabinetry. In a mobile home the same logic applies.
The tub and racks are stainless, it is ENERGY STAR certified at 237 kWh per year, and the full panel controls with an LED display are straightforward. Six wash programs cover daily soil levels without a lot of fiddling.
The trade-off is bulk. At 35.63 inches tall and 118 pounds, it is a serious object to move through a doorway or reposition for cleaning. Five gallons of water per cycle is more than the built-in slimline models here use, and portable machines can be less stable and noisier than a permanently installed one.
Capacity is still 8 place settings, so it does not solve the small-cavity problem for a large household. It solves the installation problem for a small one.
Why renters keep choosing it
Forum discussion about 18 inch dishwashers keeps circling the same problem: renters cannot cut cabinetry and landlords will not authorize a remodel. This machine sidesteps that entirely, and the faucet adapter plus drain hose are included in the box.
It is also a sensible second dishwasher for a household that runs a small kitchen and needs one more basin of capacity elsewhere in the house.
Where it falls down
The weight and height are the deal breakers. If the connection point is more than a few feet from a faucet, the 3-foot hose is the limit and you are planning around it before you buy.
Water consumption is the second concern for anyone on a metered or well system. Compare it against the SPT SD-9254SSB, which uses 2.5 gallons per cycle, before you settle.
4. Frigidaire FFBD1831UB – Premium Pick with ADA Compliance
Frigidaire 18 in. ADA Compact Front Control Dishwasher in Black with Dual Spray Arms, 52 dBA, includes room-of-choice delivery
18 inch wide
8 place settings
52 dBA
54 pounds
4.9 gallons per cycle
Pros
- ADA compliant and NSF certified sanitize cycle
- Accurate published measurements drop straight into an 18 inch opening
- Front controls and dual spray arms feel like a full-size machine
- Some owners finish a load in about half an hour
Cons
- Power cord is not included
- Install supplies may not include a 90 degree water elbow
- First-time installs often need a plumber
Two specifications put this Frigidaire in a category of its own among 18 inch machines. It is ADA compliant, and its sanitize cycle is NSF certified, meaning it removes 99.9 percent of common household germs rather than merely running a hotter wash.
It is also the only model in this roundup that offers room-of-choice delivery in select locations, which matters if you are removing an existing appliance in a home with a narrow hallway. The dual spray arms in the top and bottom racks, front control panel and heated drying system give it a full-size feel in a compact body.
Owners who remove a cabinet and install this report accurate dimensions, quiet operation at 52 dBA, and cleaning and drying that handles everyday loads without intervention. At 22.5 inches deep, 18 inches wide and 35 inches tall, it is the tallest built-in here, so check your countertop clearance carefully.
The negatives cluster on installation logistics rather than performance. The power cord is not in the box, a 90-degree elbow for the water inlet may be needed, and a first-time install often requires a plumber to tie into the sink hot water supply and add a drain branch or air gap. A few units also reported pump failures within days, with part fulfillment unresolved.
Where it earns its place
Accessible kitchens and homes with a family member who needs a sanitize cycle for bottles or medical items get features no other pick here offers. It is also a reasonable choice for anyone who would rather buy a mainstream American brand with a national service network.
Owners with a small kitchen in a closed floor plan report it reads quieter in practice than the specification sheet suggests, largely because of the front control layout.
Where it is the wrong buy
It carries a clear premium in this group, and what you pay it for is ADA compliance and NSF certification rather than extra cleaning power. If neither certification matters to your household, the Midea or COMFEE’ give you an adjustable rack and a lower entry cost for the same footprint.
Also measure the space under your countertop twice, since that 35-inch height leaves less room under a raised bar or a soffit than the 32-inch slimline bodies do.
5. Honeywell HDS18W – Quietest at 42 dBA
Honeywell 18 Inch Dishwasher with 8 Place settings, 6 Washing Programs, Stainless Steel Tub, Built-In Style, UL/Energy Star- White
18 inch wide
8 place settings
42 dBA
70 pounds
6 wash programs
Pros
- Quietest rating in the group at 42 dBA
- ENERGY STAR certified and UL listed
- Installs into an existing 18 inch opening with room behind for hoses
- Push buttons have no lettering that wears off
Cons
- Racks and cutlery basket are plastic rather than stainless
- Heaviest built-in here at 70 pounds
- One year warranty is short
If noise is your first concern, this is the machine to look at. It is rated at 42 dBA against 52 dBA for the rest of the group, and owners running the eco cycle report it is barely audible in the room. In a small open kitchen that ten-decibel gap is the difference between a background hum and a conversation you can keep having.
It also sits at the bottom of the price range while still carrying ENERGY STAR certification, a UL listing and ADA compliance. Six washing programs cover pots and pans, normal wash, china, quick wash, rinse only and energy saver, plus delay start up to 24 hours.
The top cutlery rack plus two more racks and a large removable cutlery basket give it usable organization despite the small footprint. At 22.6 inches deep, 18 inches wide and 32.4 inches tall, it fits an existing 18-inch opening with space behind for the drain and feed hoses, and install is straightforward.
The build quality trade-off is material. Racks and the cutlery basket are plastic where the EdgeStar, Midea and COMFEE’ use stainless. One owner compared the interior racks, spray arms, filter and detergent dispenser favorably against Whirlpool, GE and Frigidaire 18-inch machines sold for more than double.
Who should buy it
It suits a studio, condo or tiny house where the dishwasher sits next to where you eat, work or sleep. For an open-plan small kitchen, a ten-decibel reduction is worth more than most feature upgrades.
It also makes sense for a first apartment or a rental where budget matters and you want a quiet, certified machine with a simple install.
Who should look elsewhere
At 70 pounds it is the heaviest built-in machine in the roundup, which is awkward if you plan to move it. Plastic racks also mean more flex and long-term scuffing than the stainless competitors.
There is a small tail of early failure reports, including an E4 error with internal water pooling within a month, and the 1-year warranty gives you the least protection of the group. If you want a longer safety net on reliability, the Frigidaire is the safer structure even with its install caveats.
6. SPT SD-9254SSB – Lowest Water Use Built-in
SPT SD-9254SSB 18″ Wide Built-In Stainless Steel Dishwasher w/Heated Drying, ENERGY STAR, 6 Wash Programs, 8 Place Settings and Stainless Steel Tub
17.6 inch body
8 place settings
52 dBA
2.5 gallons per cycle
ENERGY STAR
Pros
- 2.5 gallons per cycle is the lowest in the group
- Stainless tub with 8 place settings in a slim body
- Heating element runs during the drying cycle
- ENERGY STAR certified at 234 kWh
Cons
- Drying is adequate rather than strong
- Full panel controls are awkward in a shallow built-in
- Smaller review base means thinner reliability data
This top-mount built-in from SPT is the efficiency answer in the group. It uses 2.5 gallons per cycle, roughly half what the portable SPT on this list pulls, and it is ENERGY STAR certified at 234 kWh per year. On a metered connection or a well, that difference compounds quietly over a year.
The stainless tub holds 8 place settings inside a 17.6-inch body, and the heating element is active during the drying cycle rather than passive. Top-mounting brackets and a drain tube are included, which suits an existing 18-inch opening with an accessible cabinet top.
The reservation owners raise most is drying. It is adequate rather than strong, and residual moisture and spotting on glasses and stainless are the most common complaints. In a hard-water area, budget for rinse aid from day one.
Full-panel controls are also less convenient than front controls when the machine is tucked into a shallow cabinet, because you are reaching around the door edge to read them. With 96 reviews, the long-term reliability record here is thinner than the EdgeStar or Midea.
Where it makes sense
It suits households on a well system, a metered water bill, or an RV-style utility space where every gallon counts. It is also a good second machine in a home that already has one dishwasher, supplementing capacity rather than replacing it.
The included mounting hardware makes it a practical choice when someone else is doing the install and you want fewer loose parts to chase.
When to choose something else
If drying performance is your top complaint from the current setup, this is not the fix. Look at the Midea or COMFEE’, both of which report better results from heated dry.
And if you want deep long-term buying confidence, 96 reviews is a small base. The EdgeStar carries 845 reviews on the same width, and that history is worth something in a niche category.
7. COMFEE’ CDF18A2BST – Best Rack Adjustment
COMFEE’ 18 Inch Built-in Dishwasher, Energy Star & NSF, Stainless Steel Tub
17.6 inch body
8 place settings
52 dBA
Upper rack lifts 1.97 inches
Pros
- Upper rack adjusts in height by up to 1.97 inches
- Lower rack fits plates up to 13.78 inches
- Stainless tub and build quality above the price class
- One-hour quick wash and delay start from 1 to 24 hours
Cons
- Power cord is not included
- Plastics still hold drops after heated dry
- Only 24 reviews
- so reliability history is early
The COMFEE’ solves the rack problem that most 18 inch machines have. Its upper rack adjusts in height by up to 1.97 inches, and the lower rack takes plates up to 13.78 inches, so a tall dinner plate and a lower stack can coexist in a load that would otherwise need two cycles.
It also pairs an NSF certified sanitize cycle with ENERGY STAR certification and a Hi-Temp function that boosts water to 136F. Owners repeatedly call out the stainless tub and build quality as feeling more premium than the price class suggests, and the door glides smoothly on a smooth-gliding hinge.
Heated dry works better than expected for a compact unit, with only minor moisture still on plastics after the cycle, and the 52 dBA rating is described as accurate in real use. The one-hour quick wash and a 1 to 24 hour delay start are both useful in a small kitchen with tight timing.
Purchase friction here is installation. The power cord is not included, documentation on adjusting the top rack is thin, and it is unclear whether the rear water supply cap needs action during install. One unit needed thread sealant other than standard tape on a front fitting.
Why it earns a spot
It suits a household that washes a mix of tall plates, glassware and baking dishes, where rack flexibility converts a second load into one. A couple who cooks most nights gets more usable capacity from the same 17.6-inch footprint.
What to watch
With 24 reviews it has the smallest sample in this roundup, so treat reliability claims as early rather than proven. The power cord omission is the install hurdle to plan around before delivery day.
If you cannot source a power cord locally or your installer is not willing to sort the water cap question, the Frigidaire or the Midea have clearer service paths, even with their own caveats.
What Has to Fit: Measuring an 18 Inch Dishwasher Opening
The body widths in this group run from 17.6 to 18 inches, and what you actually need is the cutout width the manufacturer specifies, plus a small clearance on each side for the door and hinges.
The EdgeStar publishes a cutout of 17.75 inches wide by 23 inches deep by 32.5 inches high, and that is the number to measure against, not the marketing width. If your opening measures exactly 18 inches, you have more room than that machine needs.
Measure four things before you shop: the width between the cabinet walls at the narrowest point, the height from the floor to the underside of the countertop, the depth from the cabinet face to the back wall, and the clearance above the door when it swings down. If the door drop is limited by a bar stool rail or a raised counter, note the door-open depth, which for the EdgeStar is 42.25 inches with the door fully open.
A trash compactor cavity is usually close to the right size for a slimline, which is why so many owners in forum threads describe a direct swap. If you have flexible hose connections rather than a plumbing stub, budget for a plumber, because a first-time install typically needs a hot water tie-in, a drain branch and an air gap. Related planning for the rest of the room is worth doing at the same time, such as working out sink and fixture choices that suit a tight layout.
Noise Ranking: Why dBA Matters More in a Small Kitchen
Six of the seven machines here carry the same 52 dBA rating, and the Honeywell HDS18W sits alone at 42 dBA. That ten-decibel gap is the largest measurable difference between any two picks on this list.
How to read the number: under 45 dBA is quiet enough for an open kitchen, 45 to 50 dBA is noticeable in a small room, and anything at 50 dBA or above is clearly audible from the next space. Brands self-report these figures, and owners in appliance forums note that reviews of the same model diverge sharply on noise because installation gaps change what you hear.
Three installation steps cut real noise regardless of model. Use a proper high loop on the drain so the pump does not gurgle. Add an anti-vibration pad under the feet, and shim the cabinet so the unit sits square in its opening. Finally, on wood or laminate floors, an isolation mat under the appliance cavity stops vibration traveling through the frame.
Forum owners with 18 inch machines also stress loading discipline. A tipped plate or a pot leaning on the door creates rattle that no decibel rating accounts for, and a correctly loaded machine runs quieter in practice than a badly loaded one.
How to Choose an 18 Inch Dishwasher
Capacity math first. Eight place settings is the ceiling for every model here. Two people filling one machine most days use about four or five loads a week, and a family of four is closer to nine or ten, which means running it most days. Count your real weekly volume before you commit.
Drying is the number one complaint in this category. Heated dry performance varies more than cleaning performance does. The Midea and COMFEE’ report the strongest results, the Honeywell performs better than its build suggests, and the EdgeStar and SPT SD-9254SSB are where you will reach for a towel. A drying agent is not optional at this size.
Noise versus everything else. If your kitchen is open to a living space, buy quiet. If it is a closed galley kitchen, 52 dBA is tolerable and you can spend your attention on drying and capacity instead.
Built-in, portable or countertop. Built-in is the only option that frees counter space and looks built in, and it needs plumbing work. Portable, as with the SPT SD-9263SS, skips cabinetry entirely and suits renters and mobile homes. Countertop units are smaller still, but none of the machines on this list are countertop models, and forum consensus is that they strain a household beyond two people.
Brand and service. Frigidaire carries a national service network and published measurements. Midea and COMFEE’ share a manufacturer, and Midea’s scheduling complaints are the most consistent negative theme we found. EdgeStar, SPT and Honeywell are niche brands with thinner parts support, which is worth weighing against their ratings. Buying a full-size machine instead is worth comparing against our picks of commercial dishwashers for farmhouse kitchens if your kitchen has the width for one.
Other options to look at. If a portable path is your plan, our notes on induction ranges for compact kitchens cover the other appliance decision in a tight layout. If cooking is central to your household, pair the dishwasher decision with a cooktop plan, because both compete for the same narrow cabinet run.
Frequently Asked Questions
What is the smallest size dishwasher available?
The smallest widely available built-in dishwasher width is 18 inches, and slimline models in this class measure 17.5 to 18 inches wide while keeping the full 34-inch height and 22 to 24-inch depth of a standard machine. Countertop models are smaller in total but hold far less.
What is the best slimline dishwasher?
Among the 18 inch models we compared, the EdgeStar BIDW1802SS is the best slimline dishwasher overall because it publishes a cutout width, pairs a stainless tub with six wash cycles, and adds a leakage sensor. The Midea 18 Inch Built-in is the stronger value, and the Frigidaire FFBD1831UB wins on ADA compliance and NSF certified sanitizing.
Which 18 inch dishwasher is the quietest?
The Honeywell HDS18W is the quietest pick here at 42 dBA. Every other model on this list, including the EdgeStar, Midea, SPT, Frigidaire and COMFEE’, is rated at 52 dBA. Installation quality also affects perceived noise, so a high loop, an anti-vibration pad and a square fit in the cabinetry matter as much as the rating.
What is the best 18 inch dishwasher for the money?
The Midea 18 Inch Built-in offers the strongest balance of price and capability, with a stainless tub, six wash programs and a Hi-Temp cycle at 136F. The Honeywell HDS18W sits lower still and is the quietest, but it uses plastic racks. Use the buttons on each card to compare current pricing.
Do 18 inch dishwashers wash dishes properly?
Yes. These machines use the same water connection, drain, electrical supply and spray-arm wash system as full-size dishwashers, and owners across the category report cleaning heavily soiled loads without a second pass. The real difference is capacity rather than wash quality, and heavily soiled pans may still need a targeted cycle.
Can I replace my trash compactor with an 18 inch dishwasher?
Usually yes, because a trash compactor cavity is close to the dimensions of a slimline machine. Check the manufacturer’s cutout spec against your opening rather than the marketing width, and confirm your vertical clearance under the countertop, since some 18 inch models are 35 inches tall. Some installs also need a plumber for the hot water tie-in and air gap.
The 18 Inch Dishwasher I Would Buy
After comparing all seven for a small kitchen, the EdgeStar BIDW1802SS is the one we would install. Its published 17.75-inch cutout is the single most useful measurement spec in this group, and 845 reviews give it the longest ownership history in a category where that history is thin. Pair it with a drying agent and a proper high loop and it handles a couple’s week without drama.
If your kitchen is open-plan, choose the Honeywell HDS18W for its 42 dBA rating. If you rent, take the portable route with the SPT SD-9263SS. Either way, measure your cutout before you order, because the fit is what makes these machines possible in the first place. These are the best 18 inch dishwashers for small kitchens in 2026, and every one of them is a better answer than hand-washing.