At Howard's Electrical, we know a thing or two about appliances. We also know that when a hard-working machine like your washing machine or dishwasher packs it in, it’s a real inconvenience!
The good news is that with a bit of regular deep cleaning and maintenance, you can significantly extend the lifespan of these essential appliances, helping them work more efficiently and saving you money on future repairs or replacements. Think of it as a little TLC that pays off in a big way.
Here’s our expert guide on how to give your washing machine and dishwasher a proper deep clean for maximum longevity.
Washing Machine Deep Clean: Banish Mould and Limescale
Washing machines can accumulate a surprising amount of soap scum, mould, and limescale, especially in hard water areas here in the UK. This build-up not only causes nasty smells but can also strain the motor and drainage system.
1. The Service Wash (Monthly)
This is the cornerstone of washing machine maintenance.
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Run an empty cycle on the hottest temperature setting your machine offers (usually 90°C or 95°C).
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Add a specialist washing machine cleaner (which often contains descaling agents) directly to the drum, or use a natural alternative: pour two cups of white vinegar into the detergent drawer.
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This hot wash will dissolve detergent residue, kill bacteria, and flush out limescale.
2. Clean the Detergent Drawer

Soap scum loves to hide here! If your dispenser is removable (most are), take it out.
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Soak it in warm, soapy water for about 15 minutes.
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Use an old toothbrush to scrub away residue in all the little nooks and crannies.
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Rinse, dry, and put it back in.
3. Wipe Down the Door Seal (Gasket)
The rubber seal around the drum is a notorious spot for trapped water, lint, and black mould.
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Pull back the rubber and wipe thoroughly with a cloth dipped in a vinegar and water solution (1 part vinegar to 3 parts water) or a mould and mildew spray.
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For stubborn build-up, use an old toothbrush and some baking soda to gently scrub the area.
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Always dry the seal completely afterwards.
4. Clear the Filter (Quarterly)
This trap catches all the loose debris (coins, buttons, lint) and is usually located behind a small panel at the bottom front of your machine.
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Caution: Always place a towel and a bowl underneath as water will drain out.
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Twist and pull out the filter. Clear any debris.
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Rinse the filter thoroughly under warm, soapy water.
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Reinstall and close the panel securely.
Dishwasher Deep Clean: Stop the Streaks and Smells

Just like your washing machine, your dishwasher is prone to grease, food particles, and limescale build-up, all of which compromise its cleaning power.
1. Tackle the Filter (Weekly or Monthly)
The filter is the most common cause of bad smells and poor cleaning performance. It’s located at the bottom of the machine.
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Remove the bottom rack to access the filter.
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Twist or lift the filter out (check your manual for your model's exact method). Filters often come in two parts—clean both!
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Scrub it with a soft brush or old toothbrush under warm, soapy water to remove all food debris and grease.
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Rinse and secure it back in place.
2. Deep Clean the Spray Arms (Every 3 Months)
If the spray arms are blocked, your dishes won't get a proper wash.
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Remove the spray arms (they usually unscrew or clip off).
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Use a toothpick or thin wire to poke clear the small jets where water sprays out.
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Rinse them thoroughly and clip them back into position.
3. Run a Descaling Cycle
A powerful cycle without dishes is the best way to clean the internal workings.
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Place a dishwasher cleaning product (tablets or liquid) in the detergent dispenser and run a hot, empty cycle.
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Alternatively, for a natural solution, place a cup of distilled white vinegar upright on the top rack (do not use detergent or dishes). Run a hot, empty cycle. The vinegar helps cut through grease and limescale. Note: Avoid placing vinegar near the rubber door seal, as its acidity can degrade the rubber over time.
4. Wipe Down the Door Seals
Food residue and gunk can hide around the door edges.
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Wipe the rubber seals and around the door frame with a damp cloth and mild detergent.
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This prevents the seals from perishing, which could otherwise lead to a leak!
Longevity Top Tips
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Mind Your Detergent: Using too much detergent in either machine can leave a residue that becomes food for mould and bacteria. Stick to the manufacturer's recommendations!
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Leave the Doors Ajar: After a wash, leave the door of both your washing machine and dishwasher slightly open for an hour or so. This allows air to circulate and prevents moisture from building up, which is key to stopping mildew and smells.
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Use Salt and Rinse Aid (Dishwasher): In hard water areas, ensuring your dishwasher salt and rinse aid are topped up is crucial. The salt softens the water, preventing limescale that can damage the internal components.
A little bit of regular cleaning goes a long way to ensuring your vital kitchen appliances stay efficient and reliable for years to come. If you do run into trouble, or if your machine's problems are beyond a deep clean, remember that the Howard's Electrical team is always here for expert advice and appliance repairs across the region!