Quick Answer
Clean a dishwasher properly by removing and washing the filter, clearing the spray arm holes, wiping the door seal, and running a hot empty cycle with a dishwasher cleaner — the full routine takes about 20 minutes and should be done monthly.
A dirty dishwasher doesn't just clean poorly — it also breaks down sooner, as residue build-up puts extra strain on the pump and heating element.
A dishwasher that's cleaned regularly performs noticeably better and lasts longer. Here's the complete routine, covering every part that needs attention.
Step-by-Step Cleaning Routine
- Remove the bottom rack and unscrew the cylindrical filter at the base of the tub
- Rinse the filter thoroughly under running water, removing any trapped debris
- Remove the spray arms and clear each hole with a toothpick or small brush
- Wipe the door seal and the recess around it where food debris collects
- Wipe down the control panel and exterior
- Run a hot empty cycle with a dedicated dishwasher cleaner
How Often to Clean Each Part
- Filter — monthly, or more often with heavy use
- Spray arms — monthly
- Door seal — every wash if possible, otherwise weekly
- Full maintenance cycle — monthly
Signs Your Dishwasher Needs Cleaning Now
- A musty smell when you open the door
- Cloudy glasses or visible residue on dishes
- Standing water at the bottom of the tub after a cycle
Frequently Asked Questions
How long does a full dishwasher clean take?▼
About 20 minutes covering the filter, spray arms, door seal and a maintenance cycle.
What's the most important part of a dishwasher to clean regularly?▼
The filter — a blocked filter is the single most common cause of poor cleaning and drainage issues.
Can I use vinegar instead of a commercial dishwasher cleaner?▼
Yes — white vinegar run through a hot empty cycle is an effective, low-cost alternative.
Why does my dishwasher smell musty even though it looks clean?▼
Smell often comes from residue trapped in the filter, spray arm holes, or door seal recess — areas that aren't always visible at a glance.
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Dishank Patel
Lead Technician & Founder · DP Electric Melbourne
Dishank Patel has over 10 years of hands-on experience repairing household appliances across Melbourne's eastern suburbs. He holds all required Victorian electrical and gas licensing and has personally repaired thousands of appliances across brands including Bosch, Miele, LG, Samsung, and Fisher & Paykel.