How to Clean a Dishwasher Filter and Keep It Running Well
Your dishwasher works hard every day, but it can only do its job properly if you maintain it. The most important maintenance task — and the one most people skip — is cleaning the filter. A dirty filter is the leading cause of poor wash results, bad smells and drainage problems.
This guide shows you how to clean your dishwasher filter correctly and how often to do it.
Where Is the Dishwasher Filter?
The filter is located at the bottom of the dishwasher tub, usually in the centre or towards the back. It typically consists of two parts: a cylindrical upper filter and a flat mesh lower filter. Some older dishwashers have a self-cleaning (macerator) filter and don't require manual cleaning, but most modern models have manual filters.
How to Clean the Filter
- Remove the bottom rack to access the filter assembly.
- Twist the upper filter counterclockwise (or unclip it, depending on your model) and lift it out.
- Remove the flat lower filter by lifting it up.
- Rinse both parts under warm running water. Use a soft brush (an old toothbrush works well) to scrub away stuck food particles and grease. Don't use anything abrasive that could damage the mesh.
- Inspect both parts for damage — if the mesh is torn, the filter needs to be replaced.
- Reinstall the flat filter first, then seat and lock the cylindrical filter back in place.
How Often Should You Clean the Filter?
As a general guide, clean the filter every 2–4 weeks if you run the dishwasher daily. If you only run it a few times a week, once a month is usually sufficient. If you notice dishes coming out with residue, a bad smell from inside the machine or water pooling at the bottom, clean the filter immediately.
Other Dishwasher Maintenance Tips
- Clean the spray arms: Once a month, remove the spray arms and rinse them, clearing blocked holes with a toothpick.
- Run a cleaning cycle: Monthly, run a hot cycle with a dishwasher cleaner tablet or white vinegar in the base to remove limescale and grease build-up.
- Check the door seal: Wipe the rubber door gasket with a damp cloth to prevent mould growth.
- Use rinse aid: Keeps the interior clean and helps dishes dry without spotting.
Signs Your Dishwasher Needs More Than a Filter Clean
If cleaning the filter doesn't resolve poor wash results, bad smells or drainage issues, the problem may be with the spray arms, heating element, drain pump or water inlet valve — consider a service call.
Oceania Appliances stocks quality dishwashers from Bosch, Fisher & Paykel, Miele, Samsung and more. Free delivery across Sydney.