Your washing machine cleans your clothes — but who cleans the machine? Over time, detergent residue, limescale and trapped moisture build up, leading to musty smells and poorer washes. Descaling is quick, easy and makes a real difference. Here’s how.
📖 6 min read · Expert cleaning guide by Tenancy Cleaner
Quick facts
- Build-up causes odours, residue and reduced efficiency.
- Descale regularly, especially in hard-water areas.
- Clean the detergent drawer, drum, seal and filter.
- A monthly maintenance wash keeps things fresh.
Why machines need descaling
Hard water leaves limescale deposits, while detergent and softener leave residue. Together they reduce performance and create that tell-tale musty smell on supposedly clean laundry.
Run a maintenance wash
Run an empty cycle on the hottest setting with a suitable descaler or cleaner. This flushes build-up from the drum and internal parts. Repeat monthly in hard-water areas.
Clean the parts that trap residue
Remove and wash the detergent drawer, wipe the rubber door seal (a hotspot for mould and grime), and clean the filter at the bottom of the machine, which catches lint and debris.
Keep it fresh between washes
Leave the door and drawer ajar between washes to let moisture escape, and don’t overdo detergent. It’s a small habit that’s part of a well-kept kitchen or utility space.
Your quick checklist
Frequently asked questions
How often should I descale my washing machine?
Roughly monthly in hard-water areas, or every couple of months in soft-water regions. Regular maintenance washes prevent build-up.
Why does my washing machine smell?
Trapped moisture, detergent residue and mould around the door seal are common causes. Cleaning the seal, drawer and filter usually solves it.
What can I use to descale it?
Use a descaler or washing-machine cleaner suited to your model, following the manufacturer’s guidance for the best and safest results.
Washing machine maintenance schedule
| Task | Frequency | Benefit |
|---|---|---|
| Hot maintenance wash | Monthly | Clears residue & smells |
| Clean detergent drawer | Monthly | Prevents mould |
| Wipe door seal | Weekly | Stops mildew |
| Clear filter | Every 1–2 months | Maintains drainage |
| Descale | Monthly (hard water) | Protects efficiency |
Signs your machine needs descaling
- Musty smell on freshly washed clothes.
- White residue or scale around the drum.
- Longer cycles or poorer cleaning.
- Visible mould on the door seal.
What people also ask
Can I use vinegar to descale? Many do, but check your manual first. Why leave the door open? It lets moisture escape and prevents odours. Hard water also causes limescale elsewhere.
Fresh machine, fresher laundry
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