A dishwasher can look clean inside while a build-up of grease, food and limescale quietly stops it working. Five jobs, done regularly, keep it cleaning properly.
1. Clean the filter
The filter at the bottom of the tub catches food. Twist it out (your manual shows how), rinse it under the tap, brush it gently and refit it properly. A clogged filter causes dirty dishes, bad smells and slow draining.
2. Check the spray arms
Look at the holes in the spray arms. If they are blocked with limescale or food, water can't spray properly. Take the arms off if they come away easily and clear the holes with a toothpick or a small brush.
3. Wipe the door seal and edges
Wipe around the door seal and the inside edges of the door with a damp cloth to remove food, grease and mould.
4. Run a hot cleaning cycle
Once a month, run an empty hot cycle with a dishwasher cleaner made for the job. Top up the salt and rinse aid if your machine uses them, especially in a hard water area.
5. Load it properly
- Scrape off food, but there is no need to rinse dishes under the tap.
- Don't overload, and don't let big items block the spray arms or the detergent tray.
- Face dirtier surfaces towards the spray and keep lighter items secure.
When it is a fault
If the dishwasher still isn't cleaning, isn't draining or leaves water in the bottom, it may need repair. Read our guide to a dishwasher that isn't draining or cleaning, or book a dishwasher repair, from £70 + VAT with a 90-day guarantee.
Call us on 029 2088 5355 for a quote, or book online. Same-day or next-day where possible, repairs from £70 + VAT, and a 90-day guarantee on every repair.
Book a repair onlineFrequently asked questions
How often should I clean the dishwasher filter?
Check it once a month, and rinse it whenever it has food or debris on it. A blocked filter is one of the most common reasons for poor cleaning and slow draining.
Why is my dishwasher leaving a film or white marks on glasses?
Hard water, too little rinse aid or too much detergent are the usual causes. Check the rinse aid and salt (if your machine uses it) are topped up, and run a cleaning cycle.
