Why Is My Dishwasher Not Getting Dishes Clean? 11 Reasons

How to get your dishwasher to clean your dishes again

Co-authored by Gevorg Grigorian and Hannah Madden

Last Updated: September 6, 2023 Fact Checked

Your dishwasher is the backbone of your kitchen: it keeps your dishes sparkling clean so you can cook and eat every day. So when your dishes are coming out with food particles or water spots on them, it can be a major annoyance. Fortunately, there are a few simple reasons why your dishwasher might not be cleaning as effectively as it used to, and most of them only require easy fixes you can do at home. For all the reasons why your dishwasher isn’t working well and how to address them, keep reading.

Things You Should Know

To fix a clogged filter, remove and clean the mesh filter in the bottom of your dishwasher with soap and water.
If the spray arm is clogged, clean out the spray arm in the bottom of your dishwasher with a toothpick, then rinse it with warm water.
Use high quality detergent and a rinse agent to get rid of water spots and leave your dishes sparkling clean.

Get Product Support Solve Any Problem

Hi there! Do you have a question about how to use or repair your home appliance? I’ve read the manuals so you don’t have to. Select your product, brand, and model, then ask away!

*

1

The filter is clogged.

Download Article

A clogged filter can cause your dishwasher to run poorly. Unless your dishwasher is self-cleaning, it probably has a small mesh filter in the bottom that you can untwist and take out. Remove the filter, then clean it using a sponge and some dish soap before putting it back in. Your dishwasher will probably run better than ever! ^{[1]
X
Research source}
- Check inside of the cavity where the filter sits, too, and remove any food particles or debris by hand.
- Can’t find your filter? Check the owner’s manual for specific instructions.

2

The spray arm is clogged.

Download Article

Clean the spray arm so water can shoot out efficiently. Look at the bottom of your dishwasher where the spray arm is located. Pop the spray arm out by either loosening the screw cap or simply snapping it off. Then, use a toothpick to clear out the small holes before rinsing with hot water. ^{[2]
X
Research source}
- To reinstall the spray arm, simply snap it back into place. If you had to loosen a screw cap, tighten that back up before running a cycle.

3

The water temperature is too low.

Download Article

Make sure the water temperature is at least 120 °F (49 °C). If the water in your dishwasher is too cold, it won’t clean your dishes as effectively. Check the temperature sensor on your dishwasher if it has one, or make sure your hot water heater is set to at least 120 °F (49 °C). ^{[3]
X
Research source}
- If the problem continues, try running hot water in your kitchen sink for about 30 seconds before you start every new wash cycle. This will heat up the water faster and ensure that only hot water goes into your dishwasher.

4

Your dishwasher is dirty.

Download Article

Use vinegar to deodorize and disinfect your dishwasher. We don’t think about it often, but the inside of a dishwasher can get dirty, too! If you’ve never cleaned your dishwasher before, pour 1 c (240 mL) of white vinegar into a bowl and place it on the top rack of your empty dishwasher. Run the hottest cycle your dishwasher has, then open the door and let the whole thing air dry. ^{[4]
X
Research source}
- Vinegar is great at removing any built up residue inside of your dishwasher, which is probably left over from food scraps or hard water.

5

Your dishes aren’t loaded correctly.

Download Article

Optimize your loading technique to clean dishes effectively. It might seem like the easiest thing in the world, but there actually is a wrong way to load dishes . Use the top rack for cups, glasses, and bowls, and save the bottom rack for plates, serving bowls, and other large items. Place silverware carefully into the silverware basket, and make sure forks and spoons aren’t stuck together before a cycle. ^{[5]
X
Trustworthy Source
Consumer Reports
Nonprofit organization dedicated to consumer advocacy and product testing
Go to source}
- Loading dishes the right way ensures that the water and detergent reaches every dish. Overloading your dishwasher or loading it ineffectively can shield dishes from the hot water and soap inside.
- If you already do this, check your owner’s manual to see if the instructions differ. Sometimes, manufacturers recommend different loading techniques based on the size and structure of your dishwasher.

6

Your dishes have too much food on them.

Download Article

Get rid of large food scraps for a better clean. While modern dishwashers don’t require you to rinse beforehand, they still aren’t great at handling big pieces of food. If you’re dealing with plates of leftovers or bowls of breakfast, dump your dishes into the compost or trash before loading. ^{[6]
X
Trustworthy Source
Consumer Reports
Nonprofit organization dedicated to consumer advocacy and product testing
Go to source}
- If you have an older dishwasher, rinse your dishes before loading, too. Modern dishwashers have sensors in them to detect how dirty dishes are, but older ones lack this feature.

7

You’re not using the right cycle.

Download Article

For very dirty dishes, use a heavier cycle. Light and medium cycles save time and water, but they don’t clean as effectively. If you’re loading up a lot of dishes that are all very dirty, select the heaviest cycle your dishwasher has for maximum efficiency. ^{[7]
X
Research source}
- If your dishwasher has any added heat options, use those as well. This will heat up the water even more, leading to cleaner dishes.

8

You’re using low-quality detergent.

Download Article

Use high-quality detergent for a deep clean. Look for detergents that contain enzymes and rinse aids for that sparkling clean finish. You can use liquid detergent, detergent packs, or detergent gels—whatever you’d like! Check out some of the top-rated detergents from Consumer Reports, like: ^{[8]
X
Trustworthy Source
Consumer Reports
Nonprofit organization dedicated to consumer advocacy and product testing
Go to source}

9

Your dishes aren’t getting rinsed wel.

Download Article

Use a rinse agent to leave dishes sparkling clean. If you’re dealing with cloudy or dull dishes, a rinse agent is the perfect product for you. Simply add some rinse agent to your dishwasher’s rinse aid reservoir before each cycle to help keep your dishes clean. ^{[9]
X
Research source}
- Rinse agents contain surfactants, which help remove water droplets quickly so they can’t leave spots.
- Rinse agents also help get rid of residue left behind from hard water.

10

Hard water is leaving residue.

Download Article

If you have hard water, install a water softener. Hard water tends to leave residue on your dishes, which can make them look cloudy or dusty. If you have hard water, consider installing a water softener on the water line in your home. This will help keep your dishes clean and also avoid hard water buildup elsewhere, like in your shower or sink faucets. ^{[10]
X
Research source}
- Not sure if you have hard water? Use a hardness test kit to test your home’s water .
- Installing a water softener usually requires help from a professional, and can cost anywhere from $150 to $600.

11

The inlet valve is broken.

Download Article

If you hear a hammering sound, your inlet valve could be broken. Sometimes, even after troubleshooting and trying new techniques, your dishwasher still won’t clean your dishes. If you’ve tried multiple things and you’re also hearing a hammering noise while the dishwasher is on, your inlet valve (which lets water flow into the machine) may be damaged. Contact a professional to come take a look and potentially replace the inlet valve. ^{[11]
X
Research source}
- A broken inlet valve can also cause your dishwasher to leak.

Expert Q&A

Search

Add New Question

Ask a Question

200 characters left

Include your email address to get a message when this question is answered.

Submit

Tips

Submit a Tip

All tip submissions are carefully reviewed before being published

Name

Please provide your name and last initial

Submit

Thanks for submitting a tip for review!

[1]

[2]

[3]

[4]

[5]

Trustworthy Source

Go to source

[6]

[7]

[8]

[9]

[10]

[11]

Log in

Why Is My Dishwasher Not Getting Dishes Clean? 11 Reasons

Things You Should Know

Steps

Get Product Support Solve Any Problem

The filter is clogged.

The spray arm is clogged.

The water temperature is too low.

Your dishwasher is dirty.

Your dishes aren’t loaded correctly.

Your dishes have too much food on them.

You’re not using the right cycle.

You’re using low-quality detergent.

Your dishes aren’t getting rinsed wel.

Hard water is leaving residue.

The inlet valve is broken.

Expert Q&A

Tips

You Might Also Like

Expert Interview

References

About This Article

Did this article help you?

Quizzes

You Might Also Like

Featured Articles

Trending Articles

Featured Articles

Featured Articles

Watch Articles

Trending Articles

Quizzes

Explore Categories