Drip coffee makers accumulate mineral scale in the water reservoir and heating element, and coffee oils in the carafe and filter basket — both degrade coffee flavour and slow the machine. Descaling monthly and cleaning the carafe daily keeps the machine producing fresh-tasting coffee.
Daily — Carafe and Filter Basket
- Discard used grounds and rinse the filter basket under warm water after every use
- Wash the carafe with warm soapy water daily — coffee oils oxidize quickly and leave a stale taste that transfers to the next brew
- For staining in the carafe, fill with warm water and 2 tablespoons of baking soda, swirl, and let sit 10 minutes before washing
- Rinse the carafe and filter basket thoroughly — soap residue affects coffee flavour
Weekly — External Surfaces and Hotplate
- Wipe the exterior of the machine with a damp cloth
- Clean the hotplate or warming surface — burnt coffee drips on the hotplate are common and affect taste if left to accumulate. Use a damp cloth once the plate is cool; for burned residue, a little baking soda paste scrubbed gently
Monthly — Descale
- Fill the water reservoir with equal parts white vinegar and water
- Place a filter in the basket (no coffee grounds) and position the carafe
- Run a half brew cycle — stop it midway and let sit for 30 minutes to allow the vinegar solution to work on scale in the heating element and water lines
- Resume and complete the cycle
- Pour out the vinegar solution and run 2–3 full cycles with fresh water to rinse thoroughly
Some machines have a "clean" button that runs a slower, hotter cycle specifically for descaling — if yours has one, use it with the vinegar solution instead of a regular brew cycle.
Tips
- Using filtered water reduces scale build-up and improves coffee flavour
- Replace paper filters regularly — reusing them once is fine in a pinch, but old filters affect flavour
- For reusable mesh filters, rinse after every use and soak in warm soapy water weekly to remove oil buildup