Can You Install a Portable Dishwasher Permanently?

On this page (10 sections)

1. Can you make a portable dishwasher a permanent installation?
2. Is a built-in the better route for a permanent setup?
3. What do three portable models need from your kitchen?
4. What do the makers say about connecting to a faucet?
5. Why do people ask about a permanent installation?
6. What should you have ready before a portable arrives?
7. Where does a permanent installation stop being a DIY job?
8. What should you do if a leak or slow drain appears?
9. Which mistakes come before a failed permanent installation?
10. Pick a portable setup or a permanent installation

A portable dishwasher is made to roll out and connect to a faucet, not to be fixed in place. A permanent installation usually means changing your plumbing, cabinets or wiring, and that work belongs to a licensed pro.

This guide covers what a permanent setup changes, what three 8-place portables say about installation, and where a plumber or electrician takes over. For the wider category, see our countertop and portable dishwashers guide.

Can you make a portable dishwasher a permanent installation?

Usually not as a simple project, because a permanent installation changes your plumbing, cabinets or wiring. The answer also depends on your model, your home and your local rules.

Portable models are sold so you don't have to do it. BLACK+DECKER says its Quick Connect assembly hooks to a faucet with no direct plumbing or permanent installation, and SPT makes the same claim for its unit.

Fixing a portable in place is a different job, and that is where the risk sits.

What a permanent installation of a portable dishwasher changes

A fixed setup changes the water connection, the drain and often the cabinet around the unit. Most of those changes are plumbing or electrical work, so the maker's manual and a licensed pro set the limits.

Any portable needs power, a water supply and a drain. A permanent change gets complicated at each of those three points.

Why a side sprayer faucet changes the answer

A faucet with a side sprayer can push a portable toward a separate water line. SPT says some detached sprayers leak while the unit is attached, because the faucet sends its line pressure to the sprayer.

SPT says that if you have a side sprayer, you will most likely need a water line that is separate from the sprayer. That is a plumbing change, so ask a licensed plumber before you go that route.

Is a built-in the better route for a permanent setup?

Yes, a built-in dishwasher is the better route when you want a permanent setup, because it's made to be fitted into cabinetry with its own connections. Converting a portable is a plumbing job, not a shortcut.

Our portable dishwasher vs built-in post compares the two for renters and owners.

If you rent, a portable that leaves the cabinet and plumbing alone is usually the simpler way to keep the kitchen as you found it.

What do three portable models need from your kitchen?

All three hold eight place settings and stand 35 to 38 inches tall, so height and floor space matter more than capacity. The table puts the main numbers side by side.

Hamilton Beach is the tallest at 38 inches, so measure it first. It's also the lightest at 90 pounds, while BLACK+DECKER is the heaviest at 116.

BLACK+DECKER and Hamilton Beach both have wheels, which helps with a heavy unit. Plan for a second person when you move any of them.

How each model sets up

BLACK+DECKER runs Normal, Heavy, Rapid, Glass, Eco and 90-minute programs, and it has an adjustable upper rack and a stainless steel tub. It includes the faucet adapter.

SPT runs Heavy, Normal, Eco, Glass, 90 Min and Rapid, and it has a time delay of 1 to 24 hours. It includes a faucet adapter too, and it carries the Energy Star label.

Hamilton Beach runs Normal, Rinse, Heavy, Delicate and Quick Wash, and it has a stainless steel interior. The brand doesn't say an adapter comes with it, so confirm what ships in the box.

What do the makers say about connecting to a faucet?

BLACK+DECKER and SPT both say their units connect to a faucet without a fixed install, and Hamilton Beach says its portable connects to any kitchen tap. Those are the brands' claims, so check your own faucet before you count on them.

Check your faucet first

Check your faucet first, because the adapter has to suit the aerator. SPT says its adapter fits standard removable aerators, male 15/16 inch or female 55/64 inch.

SPT says a faucet with a unique aerator size may need a third-party adapter kit. Follow the maker's manual for the connection, and ask a licensed plumber if your faucet doesn't match.

Our how to hook up a portable dishwasher guide covers the faucet side for models that allow it.

Check the height and your lease

Hamilton Beach says its 19-inch portable fits under most kitchen cabinets. At 38 inches tall, it still pays to measure the gap in your own kitchen.

If you rent, ask your landlord before you change the plumbing, cabinets or wiring. Our guide to choosing a portable dishwasher for an apartment covers rental-friendly picks.

Three questions settle most rental cases: whether a portable is allowed, whether any change to the cabinet or plumbing needs written approval, and who pays if something leaks.

Why do people ask about a permanent installation?

Most people ask because they want a built-in look or a unit that never has to move. Renters ask too, because they want a setup they can undo when the lease ends.

If the look matters, the finish is the first visible choice. BLACK+DECKER is black, Hamilton Beach is white and SPT is stainless steel.

BLACK+DECKER also says its top gives you some countertop space beside the kitchen counters, which helps a kitchen that has little of it.

If you never need to roll the unit out, a portable can simply stay beside the sink. That gets you most of the fixed look with none of the plumbing changes.

How much room a portable needs around it

Leave room for the door, the hoses and the cord, because a portable that is boxed in is hard to load. Hamilton Beach is 27 inches deep, the longest of the three.

Measure the floor space from the sink back to the swing of the door. Then add a little slack for the hoses.

Keep the drain hose and the faucet hose free of sharp bends when you roll the unit into place. A hose pinched behind the unit can slow the drain and may leave water in the tub.

Pick a spot that doesn't block a walkway or the oven door. A unit that gets shoved aside all week gives the hoses more chances to kink.

What should you have ready before a portable arrives?

Have answers for your faucet, outlet, drain and lease before the unit arrives, so setup never touches the cabinet. These five checks show whether a portable fits your kitchen as it is.

1. Your faucet type and aerator, from the check above.
2. A power outlet within reach of the unit's cord.
3. A sink or drain close enough for the drain hose to reach.
4. Clear floor space for the wheels and the door.
5. Written permission from your landlord, if you rent.

If all five check out, a portable fits without any permanent change.

Where does a permanent installation stop being a DIY job?

Stop at any step that touches the water line, the drain, the cabinet structure or the wiring, and call a licensed plumber or electrician. Those are the places where a mistake can cause a leak or an electrical hazard.

Local rules may also call for a licensed pro or a permit for that kind of work, so check them before anything starts.

Ask any installer about the outlet, the drain path and the cabinet before work begins, and ask them to follow the maker's manual. The Consumer Product Safety Commission also posts recall notices, so check it for any model you buy.

If you were picturing the cabinet under the sink, read putting a countertop dishwasher under the sink. It raises the same plumbing questions for a smaller unit.

What should you do if a leak or slow drain appears?

Stop using the unit, unplug it and contact the maker or a repair pro before you run it again. A leak, a slow drain or a loose connection is a sign to stop, not to keep trying.

A slow drain has a few simple checks you can make first, and our portable dishwasher not draining guide walks through them.

SPT says its unit shows fault codes on an error alarm, so note the code before you call. Keep the manual where you can find it.

Which mistakes come before a failed permanent installation?

Four mistakes cause most of the trouble, and each is easy to catch early. Catching one before you start is far easier than undoing a change later.

1. Changing the cabinet before checking the faucet and the aerator size.
2. Trusting a fits-most-cabinets claim without measuring your own gap.
3. Starting any change before your landlord agrees.
4. Treating a side-sprayer faucet as plug-and-play, when SPT says it may need a separate water line.

The first three need only a tape measure and a phone call. The fourth is a question for a licensed plumber.

Pick a portable setup or a permanent installation

Keep the portable dishwasher portable if you rent, move often or want no plumbing work. A permanent installation suits only an owner whose manual allows it and who has a licensed pro do the work.

Pick a rolling model if you want access behind the unit and a kitchen you can restore. Pick a built-in if you want a fixed look and are ready for the cabinet and plumbing work.

If you're still unsure, a licensed plumber can look at your sink and say whether a portable connects as it is. For models that roll and connect with an adapter, see best portable dishwashers on wheels.

Frequently asked questions

Can you permanently install a portable dishwasher?

Usually not as a simple project, because a permanent installation changes your plumbing, cabinets or wiring. That work belongs to a licensed plumber or electrician, and the maker's manual and your local rules set the limits for your model and your home.

Do portable dishwashers fit under kitchen cabinets?

Some may, but measure first. Hamilton Beach says its 19-inch portable fits under most kitchen cabinets, yet the unit stands 38 inches tall, so check the gap in your own kitchen before you decide that the brand's general claim holds for your cabinets.

Can you put a portable dishwasher in a rental?

Yes, but ask your landlord before you change any plumbing, cabinets or wiring, because a lease may limit changes. A portable that leaves the cabinet and plumbing alone is the simplest way to return the kitchen exactly as you found it when you move out.

Does a portable dishwasher need a plumber to connect?

Often not for the faucet connection, since BLACK+DECKER and SPT say their units connect to a faucet with no direct plumbing. Check your faucet first, follow the maker's manual, and ask a licensed plumber before you change the water line or the drain.