Verdict
Top Score · #1 of 6Aggregated review·2 sources·updated August 3, 2026

Danby DDW631SDB Countertop Dishwasher

Averaged from 2 derived from video reviews
The verdict

The Danby DDW631SDB countertop dishwasher is ENERGY STAR certified and uses 3.1 gallons per cycle. Reviewers praised its eight wash cycles, including specialized options like baby care and glass, along with the durable stainless steel interior. It runs quietly at 54 dBA and fits under most cabinets. Some users noted issues with spinach redeposit and loud operation, and others found the controls complicated. It suits small spaces and light families who want efficient countertop cleaning.

Danby DDW631SDB Countertop Dishwasher

Full review

Six place settings on 3.1 gallons

The DDW631SDB is an ENERGY STAR unit that uses 3.1 gallons per cycle, against the five to seven gallons a full-sized machine typically draws, and it holds six place settings inside a cabinet that is 21.65 inches wide. For a single person or a couple in a rental that is the whole proposition: dishwashing without plumbing work and without a large water bill.

Eight cycles cover heavy, normal, baby care, eco, glass, speed, rinse and a mini party setting, and a high-temperature boost is available for baked-on residue. The average cycle runs about 100 minutes, which is normal for the category, and the eco cycle trades still more time for less water.

Quick-connect to the tap, no plumbing

Installation is a faucet adapter rather than a plumber. The quick-connect fitting works with most standard kitchen taps, and the machine is light enough for one person to lift into position on a counter. Height clearance is the thing to check before ordering, because it is intended to sit under a wall cabinet.

The interior is stainless rather than plastic, which is the main build advantage over the cheapest machines in this class: it resists staining, wipes clean and does not hold odour. Controls are electronic with an LED countdown display, and a delay start allows scheduling a cycle up to eight hours ahead. Owners report the panel is harder to read in low light than it should be.

Leafy greens come back around

The consistent complaint is redeposit. Owners report that spinach and similar leafy debris breaks up and reattaches to otherwise clean dishes, which is a filter and spray-arm limitation rather than a detergent problem, and no cycle setting fully solves it. Heavily soiled cookware also needs a rinse before loading despite the heavy cycle.

Two mechanical faults come up repeatedly in owner reports: the spray arm failing to rotate freely, which produces obviously uneven results across a load, and the rinse-aid dispenser clogging and needing manual cleaning. Neither is universal, but both appear often enough to be worth knowing about before purchase.

No heated dry and no salt compartment

Two omissions shape day-to-day use. There is no heated drying cycle, so dishes come out damp and need either time with the door open or a towel, and there is no water-softening salt compartment, which shows in hard-water areas as film on glassware.

The capacity is also a genuine ceiling rather than a marketing figure. Baking sheets, large pots and anything tall will not fit, and a family's worth of dishes will need two runs. This machine suits a small household that wants an efficient, quiet appliance in a kitchen with no dishwasher plumbing, and nothing beyond that.

Strengths

  • +Energy Star certified with low water consumption of 3.1 gallons per wash cycle
  • +Eight wash cycles including heavy, normal, baby care, ECO, glass, speed, rinse, and mini party
  • +Durable stainless steel interior for easy cleaning and longevity
  • +Quiet operation at 54 decibels, less noise than normal conversation

Watch-outs

  • Some users reported issues with spinach redeposit and loud operation
  • Complicated controls noted by some reviewers

How it compares

The Danby model is more energy-efficient than the Comfee and Midea models, with its ENERGY STAR certification and low water consumption. However, it has more complex controls than the Farberware or Hava models, and unlike the Hermitlux and Black + Decker models, it lacks a built-in water tank. It also has reported issues with spinach redeposit that other models don't face.

Rating sources

Our 4.5 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.

How it compares

See all 6
Midea Countertop Dishwasher
#2

Midea Countertop Dishwasher

The Midea model has better loading options than the Farberware and Hava models, but it lacks a built-in water tank, unlike the Comfee and Hermitlux models. It's more efficient than the Danby in terms of water usage, but it has more complex controls than the Hava and lacks the specialized cycles of the Comfee and Danby models.

Hava R01 Countertop Dishwasher
#3

Hava R01 Countertop Dishwasher

The Hava Countertop Dishwasher is more water-efficient than the Danby and Midea models, but it has less usable space than the Farberware and Comfee models. It lacks the specialized cycles of the Comfee and Danby, and unlike the Black + Decker, it doesn't require a faucet connection, making it more portable than the Farberware Complete.

Farberware Portable Countertop Dishwasher
#4

Farberware Portable Countertop Dishwasher

While the Farberware model is just as effective as full-size dishwashers, it has a much smaller capacity than the Danby and Comfee models, limiting its use for larger households. Its two-hour wash cycle is faster than the Hava and Midea models, but the need for frequent manual refills makes it less convenient than the Comfee or Hermitlux versions.

Hermitlux Countertop Dishwasher
#5

Hermitlux Countertop Dishwasher

Unlike the Comfee model, the Hermitlux lacks a built-in UV light for sanitization, which is a key differentiator for users seeking extra hygiene. However, it offers a more compact design than the Danby and Hava models, making it a better fit for very tight spaces. Compared to the Farberware and Farberware Complete versions, it provides fewer specialized cycles but still maintains solid cleaning performance.

Danby DDW631SDB Countertop Dishwasher
4.5/5· $296
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