Do dishwashers go bad if not used?

Author: Gregory O'Keefe  |  Last update: Tuesday, January 6, 2026

Your dishwasher should be just fine if you leave it unused for a while. However, leaving your dishwasher totally unused for more than a year may cause it to become faulty. As such, it's best to use your dishwasher a few times throughout the year to keep it nice and healthy.

How long can you leave a dishwasher without using it?

It's generally recommended to run the dishwasher promptly after loading it with dirty dishes. It's best to run the dishwasher within 24 to 48 hours of loading it. This timeframe helps minimize the risk of bacteria growth and odours.

What happens if you don't use the dishwasher for a long time?

In short, you can leave your dishwasher unused for up to 3 or 4 weeks. Any longer than that and it will begin to develop problems with the motor, the pipes and could even break down. If you leave your dishwasher switched off for a prolonged period, it's best to leave the door ajar.

How to clean a dishwasher that hasn't been used for years?

Set a cup of cleaning vinegar on the top rack and run the longest cycle then take the filter and screen out put them on the top rack, sprinkle a cup of baking soda in the bottom and run a cycle with heat dry on. This will do a deep clean of the dishwasher.

What is the life expectancy of a dishwasher?

"The usual lifespan is ten years. If you have a large family and the dishwasher is used frequently, this lifespan can get reduced to 6–8 years," says Steve Evans, owner of Memphis Maids.

Dishwasher not cleaning properly? Try these tips

How do I know if my dishwasher is going bad?

Dishes are coming out dirty.

Modern dishwasher soaps do not require rinsing dishes. If you are rinsing the dishes, the soap is not as effective, so food particles could remain. Another cause is if the drain screens or drain are starting to clog and food particles are left in the bottom after the last wash cycle.

How often should you run a dishwasher if you don't use it?

Running your dishwasher at least once a week keeps the motor seals working properly. Remember, even small loads can save water with your dishwasher.

Can a dishwasher last 20 years?

Average Life Span of a Dishwasher

While the average is a decade, a few standout brands create dishwashers known for exceptional durability, even reaching up to 20 years of use.

What happens if you don't clean your dishwasher?

Over time grease, soap scum and food debris build up in dishwashers. Not only does this provide a breeding ground for germs, it also reduces the efficiency of the appliance, so it's important to maintain a clean dishwasher.

What is the best longest lasting dishwasher?

Miele is renowned for high-quality, German-engineered appliances that stand the test of time. Their dishwashers are no exception, with an average lifespan of 15-20 years. A signature of Miele reliability is a 100% stainless interior and utensil tray that are hygienic and rustproof.

Do dishwashers go bad?

Average Lifespan of Dishwashers

According to reputed appliance repair technicians and manufacturers, the average home dishwasher lasts between 10 to 15 years with regular use and proper maintenance. Even an appliance from the best dishwasher brands will only last 15 to 20 years at most.

Is it bad to run a dishwasher with nothing in it?

Yes, you can run an empty dishwasher to clean it, and doing so is actually recommended as a regular maintenance practice.

Why should you run your dishwasher at night?

Not only will the energy cost be less; it'll keep heat from building up in your kitchen, giving your AC a break.) This means you can lower your energy bill by simply checking your energy company's specific peak hours and waiting to run your dishwasher during off-peak hours.

What happens if you never use your dishwasher?

Water that remains in the bottom of a dishwasher is there for a reason--it keeps seals moist to prevent leaks and protect the motor. But when it is not used for long periods, the water evaporates, seals dry out and leaks and motor problems can occur.

How long can a washing machine sit unused?

A washing machine can be typically kept in storage for several months to a few years without significant issues, given it is stored correctly. However, to ensure smooth functioning after a long-term storage period, you must take good care of the cleaning appliance.

How do I leave my dishwasher for 6 months?

Answer:
  1. Pour one cup of water in the drain. This will prevent the filter drain well from drying out, which would prevent odor back up from the drain tube.
  2. Leave the door open slightly.

How do you clean a dishwasher after not using for a long time?

Set the dishwasher to run on a hot water cycle. The vinegar will break down any remaining bits of food, grease, soap scum, residue, and any other leftover grime. When the first cycle ends, remove the bowl and sprinkle one cup of baking soda along the bottom of the dishwasher. Run it on a short cycle.

Can you pour vinegar in the bottom of the dishwasher?

Some people put vinegar in the rinse aid compartment, but the vinegar could compromise the integrity of the compartment's gaskets. To be on the safe side, put the vinegar in a dishwasher-safe bowl on the top rack of your dishwasher. (This also helps the vinegar reach the dishes most affected by hard water marks.)

Is it OK to leave clean dishes in the dishwasher?

It is okay to leave clean dishes in a dishwasher overnight if you are too tired to unload the machine the same night. That being said, it is a good idea to wedge the door open a little when doing so to allow excess moisture and steam to escape and prevent mold from developing on the inner seals of your dishwasher.

What is the most common failure on a dishwasher?

Issues like leaks, poor drainage, unclean dishes, foul odors and overall appliance operation, though infrequent, can be the most common problems with a dishwasher that isn't operating properly. In some cases, you can resolve these issues with a little elbow grease and the help of your product manual.

Is it worth it to fix a dishwasher?

If your dishwasher is within the five-year limit, it's definitely worth fixing. But if your dishwasher is closer to ten years, finding replacement parts might be too expensive, so you'd be better off replacing your machine.

At what age should a dishwasher be replaced?

You should replace a dishwasher every nine to 16 years, depending on its current state. Ongoing maintenance, along with the brand, model, and usage, can influence how long your dishwasher can last before needing a replacement.

Is it bad to run a dishwasher half empty?

No. You should do your best to avoid underfilling your dishwasher. When you run a cycle in a dishwasher, the same amount of water and energy is used, regardless of how many dishes you insert. Underfilling your dishwasher could lead to a lot of wasted water.

Do dishwashers need to be serviced?

It's important to keep your dishwasher maintained to give it the best chance possible to clean your dishes properly year after year. Here's how. It's so important to keep your dishwasher in good shape. While your dishwasher's job is to clean dishes, the process can cause the machine itself to become dirty.

What is the normal life expectancy of a dishwasher?

The life expectancy of a dishwasher is about 10 years, according to manufacturers surveyed by Consumer Reports. However, issues with the appliances tend to develop within the first five years.

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