Sharp SDW4523MS Dishwasher Review
When you buy through the Amazon links on this page, we may earn a commission at no extra cost to you. Learn more
Last updated October 31, 2026
The Sharp SDW4523MS is an 18-inch built-in dishwasher, 17.68 inches wide, not a full-size 24-inch machine. That single fact decides most of the purchase: it is a good buy for a kitchen whose opening only takes a slim unit, and the wrong machine for anyone who can fit a standard one.
In that narrow slot it packs a stainless steel tub, a removable third rack, wash zones that run one rack at a time, NSF sanitization, door-open drying and a 32-1/8-inch height that meets ADA guidelines. Those features are what its build justifies. The review base is small, so this verdict rests on the specifications and the pattern in owner feedback.
What the Sharp SDW4523MS does well
The machine earns its place on fit and loading flexibility rather than on raw capacity. At 17.68 inches wide, 22.68 inches deep and 32.12 inches tall, it slides into a slim opening and under a low counter, and its 32-1/8-inch height meets ADA guidelines, which matters in an accessible or aging-in-place kitchen.
Loading for a small household
Eight place settings, a removable third rack for cutlery and small utensils, a height-adjustable upper rack and a lower cutlery basket give more places to put things than the width suggests. The third rack comes out when you need the clearance below it.
Wash zones and a quiet run
The Wash Zone option runs the upper or lower rack on its own, which suits a household that does not fill the machine every day. At 47 dBA, it runs quietly.
Drying and sanitizing
Drying works by Auto Door Open: the door pops open at the end of the cycle to let steam out, and the load finishes on residual heat and ventilation. The NSF-certified Sanitize option pushes the final rinse to 149 to 154°F on the main cycles.
Efficiency and controls
The dishwasher is ENERGY STAR certified, uses 240 kWh a year and about 2.4 to 4.7 gallons per Normal cycle. Backlit touch controls sit on the front panel with a remaining-time display, a 1 to 24 hour delay start and a child lock. A soil sensor and dual-stage filtration handle the sensing, and three spray arms, the lower one in stainless steel, do the washing.
Cycles and warranty
Six cycles cover the everyday jobs: Auto, Heavy Duty, Normal, Delicate, Express and Rinse. Express, the one fast option, runs about 60 minutes, and adding Sanitize roughly doubles it. The warranty is 1 year parts and labor.
Where the Sharp SDW4523MS falls short
The core compromise is capacity. Eight place settings is what this width gives here, and it works out to roughly one or two people, or about two days of dishes for a couple. A larger household will run it constantly.
Drying without a heating element
There is no heating element for drying. Auto Door Open helps a lot, but expect to towel-dry deep plastic recesses and items that trap water in their shape.
Long cycles
Normal runs about 118 to 149 minutes, Heavy Duty about 157, and Auto up to about 154. Sanitize pushes Auto toward three hours. Only Express is quick, so plan the day around one long run rather than several short ones.
Rack and warranty limits
The lower rack has no fold-down tines, so loading is less adaptable than on machines that have them. The 1-year warranty is on the short side for a major appliance.
Installation parts
The box includes a cutlery basket, installation hardware and a third rack, but the supply line, the elbow fitting and the power connection are not part of what comes with the unit.
A small review base
The review base itself is small, with only a handful of ratings and no long-term reliability record for this model.
The product in this review
Sharp SDW4523MS dishwasher
See on AmazonSharp SDW4523MS specifications that matter
The figures below decide whether the machine fits your opening and how it behaves day to day.
| Specification | Value | Why it matters |
|---|---|---|
| Type | 18-inch built-in, front control, slide-in, stainless steel | Needs a slim cutout, not a standard 24-inch one |
| Dimensions | 17.68 in wide, 22.68 in deep, 32.12 in high; 76.8 lb | Measure width, depth and height before ordering |
| Cutout | About 17-23/32 in wide, 32-1/8 in high (max 34 in), 22-7/8 in deep | The countertop needs at least 23 in of depth for a flush door |
| Capacity | 8 place settings; removable third rack; height-adjustable upper rack; lower cutlery basket | Suits a small household, not a family |
| Noise | 47 dBA | Quieter than normal conversation |
| Cycles | Auto, Heavy Duty, Normal, Delicate, Express, Rinse | Express is the only fast cycle |
| Options | Half Load, Wash Zone, Hi Temp, Sanitize, Auto Door Open, Delay | Wash Zone runs one rack alone |
| Drying | Auto Door Open, no heating element | Plastics may need a towel |
| Sensors and filtration | Soil sensor; dual-stage filtration | Adjusts the wash to how dirty the load is |
| Spray arms | 3 (top, upper, lower; stainless lower arm) | Coverage from top to bottom |
| Efficiency | ENERGY STAR; 240 kWh/yr; 2.4 to 4.7 gal per cycle (Normal) | Low running cost for a slim unit |
| Certifications | NSF sanitization; ADA compliant | Fits a low counter and an accessible kitchen |
| Electrical | 120V/60Hz, dedicated 15 to 20A circuit | Needs its own circuit |
| Controls | Backlit touch, front panel; remaining-time display; child lock; 1 to 24 hr delay | Delay start lets you run it off-peak |
| Warranty | 1 year parts and labor | Short for a major appliance |
Cycle times and water use
Sanitize and Hi Temp add time to any cycle you select.
| Cycle | Water | Time |
|---|---|---|
| Auto | 2.4 to 4.7 gal | 123 to 154 min |
| Heavy Duty | 4.7 gal | 157 min |
| Normal | 2.4 to 4.7 gal | 118 to 149 min |
| Delicate | 4.2 gal | 116 min |
| Express | 3.4 gal | 60 min |
| Rinse | 1.7 gal | 20 min |
The Sharp SDW4523MS is the right machine if an 18-inch opening is your constraint and you want a stainless tub, a removable third rack, wash zones, quiet operation and ADA height in one unit. It is the wrong machine if you can fit a 24-inch dishwasher, need more than eight place settings, want a longer warranty or expect heating-element drying.
Measure your opening first. If it is 18 inches, this is a strong candidate for a small kitchen, a condo, an ADU, a rental or an accessible kitchen. If it is 24, a full-size machine will serve you better.
Frequently asked questions
An 18-inch dishwasher lives or dies on the cutout, so the width, height and depth of your opening are worth measuring twice before anything else.
Can the Sharp SDW4523MS run only the top or bottom rack when I have a light load?
Yes. A Wash Zone setting lets the Sharp SDW4523MS wash either the upper or the lower rack by itself, so a few plates and mugs do not require filling the whole tub. That is handy for a one- or two-person household that rarely has a full load ready.
How well does the Sharp SDW4523MS dry plastic containers and cups?
The Sharp SDW4523MS has no heating element for drying; instead the door releases at the end of the cycle and the load finishes on leftover heat and air. Deep plastic recesses and shapes that hold water usually still need a quick wipe with a towel.
How many people is the Sharp SDW4523MS realistically sized for?
It is realistically sized for about one or two people, or roughly two days of dishes for a couple. Eight place settings is the ceiling, and a household of three or more will fill it faster than a single wash day can clear it, so expect to run a cycle most days.
Is there a quick cycle on the Sharp SDW4523MS for evenings when I need dishes back fast?
Express is the only fast program on the Sharp SDW4523MS and it finishes in about an hour. The everyday Normal cycle runs closer to two to two and a half hours, and selecting Sanitize on a cycle stretches it considerably longer.
What do I need to buy separately to install the Sharp SDW4523MS?
The Sharp SDW4523MS ships with a cutlery basket, installation hardware and the third rack. Beyond the box, budget for a water hookup kit and an electrical hookup, and note that the unit draws on its own dedicated 15 to 20 amp circuit, so plan for that wiring before it arrives.