Dishwasher Maintenance Made Simple
This one is for my father; I love you – you neurotic bastard.
Dishwashers are one of the hardest-working appliances in the home, and yet they often get overlooked when it comes to regular maintenance. Just like that filter on your washing machine that’s been eating your socks for all these years (Google it).
We rely on them to wash our dishes efficiently, but the vast majority of us never read the owner’s manual—we just push the button and it goes.
If you’ve been noticing that your dishwasher isn’t performing like it used to—maybe your dishes aren’t getting as clean, or there’s an unpleasant odor—it might be time to give it some attention.
In this blog post, we’ll explore the often-overlooked aspects of dishwasher maintenance that can make a big difference in its efficiency, longevity, and cleanliness. With just a few simple, yet crucial steps, you can keep your dishwasher running smoothly for years to come.
With luck, you can even keep your father from hand-washing all of the glasses in your house that have just come straight from the dishwasher whenever he’s making you a cocktail during a visit (bless your heart, I really do love ya for that) because your glassware is too spotty for a civilized margarita.
He’s right, of course—but kindly direct your focus elsewhere.
1. Clean the Filter Regularly
One of the most commonly neglected parts of a dishwasher is the filter. Over time, food particles, grease, and soap scum can accumulate in the filter, reducing the appliance’s cleaning performance. A clogged or dirty filter can lead to poor water drainage, foul odors, and streaky or spotty dishes.
How to clean it:
- Locate the dishwasher filter, usually at the bottom of the unit, beneath the spray arm. Refer to your user manual for exact instructions.
- Remove the filter and rinse it under warm water to remove food debris. Use a soft brush, such as an old toothbrush, to scrub away stubborn residue.
- If necessary, soak the filter in warm, soapy water for a few minutes to loosen grime.
- Reinstall the filter once it’s thoroughly clean.
A good rule of thumb is to check and clean the filter at least once a month. If you have hard water, you may need to do it more often.
2. Descale and Remove Mineral Buildup
In areas with hard water, mineral deposits such as calcium and lime can build up inside your dishwasher, especially on the spray arms, heating element, and the dishwasher walls. This mineral buildup not only affects your dishwasher’s performance but can also leave unsightly spots or film on your dishes.
How to descale:
- Run an empty cycle with a dishwasher-safe cup of white vinegar placed on the top rack. The acid in the vinegar helps break down mineral deposits and disinfect the interior.
- Alternatively, you can purchase a dishwasher descaling product from the store and follow the manufacturer’s instructions.
Descaling every three to four months can help prevent hard water buildup and keep your dishwasher functioning properly.
3. Inspect the Spray Arms
The spray arms are responsible for distributing water throughout the dishwasher during the wash cycle. If they become clogged or blocked by food debris, mineral deposits, or grease, they won’t spray water effectively, leading to poor cleaning results. I once pulled a large olive pit out of a spray arm that was blocking one of the jets and I still have no idea how it managed to get in there.
How to inspect and clean:
- Check both the upper and lower spray arms for any obstructions.
- Remove the spray arms (if possible) and inspect the spray nozzles for clogs.
- Use a toothpick or a small brush to clear any debris from the nozzles.
- Rinse the spray arms under water to ensure they are free from buildup.
- Reinstall the spray arms once cleaned.
Cleaning the spray arms every few months will help maintain optimal water pressure and ensure that your dishwasher delivers a thorough clean.
4. Clean the Door Seals and Gasket
Dishwasher door seals and gaskets are vital for keeping water inside the unit during the wash cycle. Over time, they can accumulate food particles, soap scum, and mildew. Dirty door seals can cause water to leak out during operation, and a moldy smell may develop.
How to clean the door seals:
- Wipe down the door gasket and seals with a damp cloth or sponge.
- Use a toothbrush dipped in a mixture of warm water and mild detergent to scrub away grime from the seals, paying special attention to the crevices.
- For mold and mildew, apply a mixture of equal parts water and white vinegar to the affected areas and wipe clean.
Inspect the seals regularly for signs of wear and tear. If you notice cracks or deterioration, it may be time to replace them to prevent leaks.
5. Check for Drain Blockages
A dishwasher relies on a drain system to expel dirty water after each cycle. If the drain becomes clogged, water may not be fully drained, leading to stagnant water, foul smells, and potential flooding.
How to check for blockages:
- Check the drain at the bottom of the dishwasher for any visible food particles or debris.
- Remove any obstructions and clean the area around the drain.
- If your dishwasher has a drain hose, ensure it isn’t kinked or obstructed. You can detach the hose (if you feel comfortable doing so) and inspect it for clogs.
- If your dishwasher has a garbage disposal, check to make sure the disposal is clear of debris as well, since a clogged disposal can affect the dishwasher’s drainage.
Regularly checking the drain will prevent buildup and ensure your dishwasher drains properly after each cycle.
6. Wipe Down the Interior
While it may seem obvious, many people forget to wipe down the interior of their dishwasher. Over time, soap scum, mineral deposits, and food particles can accumulate inside the tub, leaving behind unpleasant odors and residue.
How to clean the interior:
- Wipe down the sides and bottom of the dishwasher with a damp cloth.
- If you notice any stubborn stains, you can use a mixture of baking soda and water to scrub the interior gently.
Make it a habit to wipe the interior down every few weeks, especially if you use your dishwasher frequently. This will help keep it smelling fresh and looking clean.
7. Run Hot Water Before Starting the Dishwasher
Before starting a load of dishes, run the kitchen sink until the water is hot. This ensures that the dishwasher starts with hot water, which is essential for effective cleaning and sanitizing. If your dishwasher doesn’t have a built-in heater, the temperature of the water it receives can directly affect its performance.
Why it’s important: Hot water helps dissolve grease and food particles, allowing the detergent to work more effectively. If your water heater is set too low, or if the dishwasher receives lukewarm water, your dishes may not get as clean.
Wrap Up
We know that this article won’t save you much in the way of time, but it will save you money if you keep up on the maintenance. So, take a few moments every month to maintain your dishwasher, and it will continue to be a reliable, efficient kitchen companion for years to come.
Much Love
Thomas & Sidney (mostly Thomas, Sidney shook her head at me when I suggested this one)
