A countertop dishwasher with a built-in tank can clean everyday dishes without permanent plumbing, making it a practical choice for apartments, RVs, offices, and compact kitchens.
We selected 10 portable dishwashers with water tanks that prioritize useful wash cycles, manageable capacity, efficient operation, and flexible installation.
Best 10 Portable Dishwashers with Water Tank Picks for 2026
Best Compact Choice
HAVA 6-Program Countertop Dishwasher
- 5L built-in tank with faucet option
- Holds 30+ items and four place settings
- Includes Baby Care and drying modes
Best For: Small homes, dorms, boats, and RVs
Best Feature Set
EUHOMY 8-Program Countertop Dishwasher
- Eight programs plus Self-Clean and Dry
- Quiet 40 dB listed operation
- 5L tank, child lock, and delay mode
Best For: Apartment kitchens seeking versatile, quiet operation
Best for Hard Water
HAVA Upgraded Dishwasher with Softener
- Built-in softener helps reduce limescale
- 5L tank requires no plumbing
- Eight programs with ECO mode and delay start
Best For: Hard-water homes and compact kitchens
Best Quick-Wash Value
EUHOMY 8-Program Portable Dishwasher
- 29-minute Quick wash cycle
- 5L tank with no-hookup operation
- Includes drying, Self-Clean, and child lock
Best For: Renters and busy users needing faster daily washes
Best Compact Tank Option
Hermitlux 5-Liter Countertop Dishwasher
- Built-in 5-liter tank for hookup-free use
- Five wash programs plus drying
- Fits plates up to 10.25 inches at an angle
Best For: Small kitchens, apartments, dorms, boats, and RVs
Best Quiet Feature Set
EUHOMY 6-Program Countertop Dishwasher
- Quiet 40 dB operation
- 5-liter tank with no permanent setup
- Hot-air drying and up to 73-hour ventilation
Best For: Apartments and open kitchens needing quiet, flexible cleaning
Best for Baby Items
Mini Countertop Dishwasher with Water Tank
- Baby Care cycle with 360-degree spray coverage
- 29-minute Quick mode
- Washes, dries, and stores tableware
Best For: Parents, small households, apartments, and RVs
Best Overall
COMFEE’ 6-Place Countertop Dishwasher
- Six-place capacity for up to 70 pieces of tableware
- Eight programs with Heavy and extra-drying options
- Energy Star design uses as little as 2.77 gallons per cycle
Best For: Two- to three-person households needing higher capacity
Best Heavy-Duty Pick
COMFEE’ 1.32-Gallon Countertop Dishwasher
- Built-in tank works without a plumbing hookup
- Six wash and refresh modes, including 162°F Hygiene
- Fits 30+ items and plates up to 9.5 inches
Best For: Compact spaces and no-installation setups
Best for RVs
COMFEE’ Mini Tank Dishwasher with Air Dry
- Manual-fill tank avoids the need for a tap connection
- Compact interior holds 30+ items and 9.5-inch plates
- 162°F Hygiene and Air Refresh modes add versatility
Best For: RVs, boats, campers, and apartments
Best Compact Choice – HAVA 6-Program Countertop Dishwasher
If you need portable dishwashers with water tank convenience, the HAVA countertop model offers a flexible setup without requiring permanent plumbing. Its built-in 5L tank, compact footprint, and six wash programs make it practical for apartments, dorms, boats, campers, and RVs.
Best For: Small households and temporary kitchens that want straightforward, tank-fed dishwashing.
Pros:
- Uses a built-in 5L tank or an included faucet hose.
- Accommodates more than 30 pieces of kitchenware and up to four place settings.
- Includes six programs, Baby Care washing, fruit washing, and drying with extended ventilation.
Cons:
- At approximately 60 dB, it may be more noticeable than quieter countertop models.
- Its 220-volt specification should be checked against your electrical setup.
- Only dishwasher-specific detergent should be used.
This is a versatile pick when installation-free operation and useful capacity matter more than the quietest performance. The tank and faucet options also make it adaptable to changing spaces.
Best Feature Set – EUHOMY 8-Program Countertop Dishwasher
Among portable dishwashers with water tank operation, this EUHOMY model stands out for its broad program selection and convenience features. The 5L tank supports standalone use, while the compact design accommodates more than 30 items per load.
Best For: Users who want quiet operation, multiple wash choices, and added scheduling and maintenance features.
Pros:
- Eight programs include ECO, Quick, Glass, Baby Care/Strong, Self-Clean, Fruit, and Dry.
- Runs at a listed 40 dB and includes a child lock and delay function.
- Offers 167°F washing, dual spray arms, a 5L tank, and a faucet connection option.
Cons:
- More than 19 inches of vertical clearance is recommended beneath upper cabinets.
- A suitable adapter may be needed for faucets that differ from the included G3/4-inch connection.
- It requires dishwasher-safe detergent.
With its low listed noise level and eight programs, this EUHOMY is a strong all-around option for kitchens where flexibility and convenience features are priorities. Confirm cabinet clearance before buying.
Best for Hard Water – HAVA Upgraded Dishwasher with Softener
This HAVA model adds a built-in water softener to the typical tank-fed countertop design, making it one of the more specialized portable dishwashers with water tank functionality. Its 5L tank avoids plumbing, while the adjustable rack and eight programs support everyday dishwashing in compact spaces.
Best For: Households dealing with hard water, limescale buildup, or watermarks on dishes.
Pros:
- Built-in water softener helps address hard-water buildup and spotting.
- Optimized ECO mode is designed to reduce water and energy use.
- Includes an adjustable rack, eight programs, child lock, and an 18-hour delay start.
Cons:
- The listed noise level is approximately 60 dB.
- Its 220-volt specification should be verified before purchase.
- The compact interior still requires careful loading despite the redesigned rack.
The integrated softener is the main reason to choose this version. It adds useful protection for hard-water homes while retaining the no-plumbing flexibility expected from a 5L countertop dishwasher.
Best Quick-Wash Value – EUHOMY 8-Program Portable Dishwasher
For shoppers comparing portable dishwashers with water tank convenience, this EUHOMY model combines a 5L tank with an especially useful 29-minute Quick cycle. It fits more than 30 items, supports faucet operation, and adds hot-air drying, self-cleaning, and flexible scheduling.
Best For: Renters, dorm residents, RV users, and households that value fast everyday cycles.
Pros:
- Offers an installation-free 5L tank setup or included hose connection.
- Includes an advertised 29-minute Quick wash, eight programs, and a 167°F Baby Care/Strong mode.
- Features dual spray arms, hot-air drying, 73-hour ventilation, child lock, and delay mode.
Cons:
- Plates larger than 10.25 inches may not fit as easily.
- Heavy grease should be scraped before loading for best results.
- BPA plastics should not be washed, and dishwasher-specific detergent is required.
This version is a practical fit for users who frequently need a faster cycle without giving up tank-fed portability. Its size and loading limits are worth checking against your dishware before ordering.
Best Compact Tank Option – Hermitlux 5-Liter Countertop Dishwasher
The Hermitlux is a practical choice among portable dishwashers with water tank for small kitchens, apartments, dorms, boats, and RVs. Its built-in 5-liter tank allows use without a permanent hookup, while faucet connection is also available when preferred.
Best For: Small households that want flexible countertop washing and a compact footprint.
Pros:
- Built-in 5-liter tank supports no-installation operation.
- Five washing programs include Standard, Fast, ECO, Strong, and Fruit cycles.
- Drying function, high-temperature cleaning, and PTC hot air help keep dishes dry.
- Glass door lets you monitor the wash cycle.
Cons:
- Requires about 19.88 inches of clearance between the counter and upper cabinets.
- Capacity is limited to four place settings.
- Faucet mode requires connecting the included hose to a faucet.
With 50 dB operation, a 16.85-by-16.73-by-18.03-inch footprint, and support for plates up to 10.25 inches when angled, this model balances useful capacity with compact sizing. It is especially appealing if a visible water tank and straightforward controls matter more than a large interior.
Best Quiet Feature Set – EUHOMY 6-Program Countertop Dishwasher
The EUHOMY stands out among portable dishwashers with water tank for its quiet 40 dB operation and extended drying and ventilation features. Its 5-liter tank supports countertop use without permanent installation, while the included hose provides a faucet-supply alternative.
Best For: Apartments and open kitchens where low noise, drying, and flexible cycle choices are priorities.
Pros:
- Quiet 40 dB operation is suited to work calls, nighttime use, and shared spaces.
- Six programs include Quick, ECO, Baby Care/Heavy, Fruit, Normal, and Dry.
- Provides 60 minutes of hot-air drying and up to 73 hours of automatic ventilation.
- Holds 30-plus items and plates up to 10.25 inches.
Cons:
- Requires more than 19 inches of vertical clearance for a better fit.
- A faucet adapter may need to be purchased separately for compatible G3/4-inch connections.
- Heavy grease or burnt-on residue should be scraped off before loading.
The 29-minute Quick cycle, dual spray arms, water-level indicator, and included storage accessories make this a well-equipped option for everyday loads. Choose it if quiet operation and post-cycle ventilation are more valuable to you than the simplest possible feature set.
Best for Baby Items – Mini Countertop Dishwasher with Water Tank
This mini countertop dishwasher is one of the more versatile portable dishwashers with water tank for apartments, RVs, camping, and boats. Its 5-liter tank avoids a permanent installation, while upper and lower spray arms provide 360-degree coverage for dishes, cutlery, and baby bottles.
Best For: Small households and parents who want washing, drying, and storage in one compact appliance.
Pros:
- Five programs include Normal, Quick, Eco, Baby Care, and Fruit.
- Quick mode completes a cycle in 29 minutes.
- Can wash, dry, and store tableware, including baby bottles.
- Uses 5 liters of water per cycle and is ETL and DOE certified.
Cons:
- Capacity is designed for roughly one to three servings per load.
- Plates are limited to approximately 10.5 inches.
- Professional dishwasher detergent, powder, or tablets are required to avoid excess suds and clogging.
At about 16.54 inches wide and deep and 18.11 inches high, this model is sized for tight spaces while still offering a drying function and LED interior light. Its 49 dB rating is reasonably quiet, making it a sensible fit where compact bottle and tableware cleaning is a priority.
Best Overall – COMFEE’ 6-Place Countertop Dishwasher
For shoppers comparing portable dishwashers with water tank flexibility, the COMFEE’ 6-place countertop model offers a larger capacity and broad cycle selection. It can connect to a faucet and is sized for dorms, RVs, apartments, or other compact kitchens.
Best For: Households of two to three people that want more capacity and versatile cleaning programs.
Pros:
- Fits up to six place settings, with room for plates up to 10 inches in diameter.
- Offers eight programs, including Heavy, Baby-Care, ECO, Glass, Speed, and Rinse.
- Heavy mode uses 12 spray nozzles, 360-degree coverage, and water temperatures up to 154°F.
- Uses as little as 2.77 gallons per cycle and includes an extra-drying function.
Cons:
- Requires a suitable faucet adapter for direct-connect installation rather than offering a built-in water tank.
- At 46 pounds, it is heavier than the smaller COMFEE’ countertop models.
- The listed 52 dB noise level may be noticeable in very quiet spaces.
This is the strongest choice when capacity, heavy-duty cleaning, and cycle variety matter more than the convenience of manually filling a tank. Its countertop footprint is substantial, so measure your available space before buying.
Best Heavy-Duty Pick – COMFEE’ 1.32-Gallon Countertop Dishwasher
This compact COMFEE’ is a practical pick among portable dishwashers with water tank operation because it can run without a plumbing hookup. Fill the built-in 1.32-gallon tank manually, or connect it to a faucet with the included adapter.
Best For: Small kitchens, dorms, apartments, boats, and RVs where simple setup is a priority.
Pros:
- Manual-fill tank allows installation without a dedicated water connection.
- Six modes include Normal, Rapid, Hygiene, Fruit, Glass, and Air Refresh.
- Hygiene mode heats water to 162°F for heavily soiled dishes and dinnerware.
- Compact design washes more than 30 items and accommodates plates up to 9.5 inches.
Cons:
- The smaller interior is limited to more than 30 items rather than six full place settings.
- Its listed 62 dB noise level is higher than the larger COMFEE’ model in this roundup.
- Counter clearance of at least 19.6 inches is required.
The built-in tank and included water pitcher make this a convenient choice for renters and mobile living. Its compact capacity is best suited to lighter daily loads, while Air Refresh helps reduce moisture and odors after washing.
Best for RVs – COMFEE’ Mini Tank Dishwasher with Air Dry
Designed for flexible placement, this black COMFEE’ mini dishwasher is one of the most convenient portable dishwashers with water tank functionality for apartments, campers, and RVs. Its 1.32-gallon tank eliminates the need for a tap connection, while the included hose and adapter provide an alternative installation method.
Best For: RV owners, boat users, and apartment dwellers who need a portable dishwasher with manual-fill operation.
Pros:
- Built-in 1.32-gallon tank supports use without a water hookup.
- Ultra-compact design washes more than 30 items and accepts plates up to 9.5 inches.
- Six options include Rapid, Hygiene, Fruit, Glass, Normal, and Air Refresh.
- Hygiene reaches 162°F, while Air Refresh circulates air to help keep the interior and dishes fresh.
Cons:
- Its compact capacity is less suitable for large dish loads.
- The unit requires more than 19.6 inches of clearance beneath an upper cabinet.
- At 62 dB, operation may be audible in close quarters.
With leakage protection, a water pitcher, and both tank-fill and faucet-connect options, this model is especially adaptable for mobile or temporary living spaces. Use dishwasher detergent rather than regular liquid dish soap, as specified in the product notes.
How We Picked the Best Portable Dishwashers with Water Tank
We compared these Portable Dishwashers with Water Tanks by looking at tank capacity, wash-program variety, interior space, noise claims, installation flexibility, energy-conscious features, and suitability for small living spaces. We also considered whether each model supports direct faucet hookup as an alternative to filling the tank manually.
Because countertop dishwashers vary in how they define capacity, place-setting numbers and item counts should be treated as useful guidelines rather than exact limits. Real capacity depends on plate diameter, cookware shape, and how efficiently the racks are loaded.
Quick Comparison
| Feature | What to look for | Why it matters |
|---|---|---|
| Water tank | Usually about 5 liters or 1.32 gallons | Determines filling frequency and portability |
| Wash programs | At least standard, intensive, quick, and eco cycles | Helps match cleaning power and runtime to each load |
| Capacity | Place settings or stated item count | Shows whether it suits one or two people, families, or occasional use |
| Installation | Tank fill plus optional hose connection | Allows use without a permanent water line |
| Drying | Heated, hot-air, or automatic drying | Reduces leftover moisture and odors after washing |
Key Buying Factors for Portable Dishwashers with Water Tank
Tank Size and Filling
A built-in tank is the main convenience feature, but you still need room to fill it. Confirm the tank volume and whether the included funnel or pitcher makes filling easy. A larger tank may reduce refills, while a smaller footprint can be more valuable in a cramped kitchen.
Counter Space and Ventilation
Measure the dishwasher’s width, depth, and height, including space needed to open the door and route the drain hose. Leave adequate clearance around vents, and check that your counter can support the appliance when full of water and dishes.
Programs, Temperature, and Drying
Standard and intensive cycles handle everyday plates and tougher residue, while quick cycles save time for lightly soiled dishes. Baby-care or high-temperature settings can be useful, but they may use more water or electricity. Drying is especially helpful if dishes will remain inside between loads.
Noise, Efficiency, and Setup
For open-plan homes, offices, or nighttime use, compare stated decibel ratings, recognizing that actual sound varies by surface and load. Look for clearly labeled controls, accessible filters, leak protection, and an installation process that does not require specialized tools.
Who Should Buy Which Portable Dishwashers with Water Tank?
Choose a compact tank model if you live alone, have limited counter space, or wash only a small daily load. Choose a higher-capacity model if you regularly clean several place settings or want fewer cycles. Choose a quieter model for studio apartments, offices, and shared spaces. Choose a model with multiple temperature and drying options if you wash mixed loads, baby items, or dishes that need to be ready quickly.
Before ordering, verify the appliance dimensions, drain-hose reach, electrical requirements, and whether your dishes fit the rack openings. A portable dishwasher is most convenient when the tank, controls, filter, and hose connections are all easy to access.