Why Descale Your Coffee Maker?

Mineral deposits (limescale) from water accumulate inside the machine over time, reducing heating efficiency, slowing brew times, and affecting coffee flavour. Regular descaling extends machine life and keeps coffee tasting as intended.

How to Descale with White Vinegar (Free Method)

  1. 1

    Empty the machine and remove the filter

    Empty any remaining water from the reservoir. Remove the filter basket and any paper filter. You are running vinegar through the machine, not brewing coffee.

  2. 2

    Fill with equal parts white vinegar and water

    Mix 50% white vinegar and 50% cold water and fill the reservoir to capacity.

  3. 3

    Run a full brew cycle

    Run the machine through a complete brew cycle with the vinegar solution. The acidic vinegar dissolves mineral deposits inside the boiler, pipes and spray head. Discard the vinegar water from the carafe.

  4. 4

    Let it soak (optional, for heavy buildup)

    For machines with significant scale buildup, halfway through the brew cycle pause the machine (if it has a pause function) and leave the vinegar solution in the machine for 30–60 minutes before completing the cycle. This gives the acid more time to work.

  5. 5

    Rinse with 2–3 cycles of fresh water

    Fill the reservoir with fresh clean water and run a full brew cycle. Discard the water. Repeat 2–3 times until no vinegar smell remains in the brew water. This step is important — vinegar residue will taint your next coffee.

  6. 6

    Wipe down the exterior and carafe

    Wipe the hot plate and exterior with a damp cloth. Wash the carafe, filter basket and any removable parts in warm soapy water.

Using a commercial descaler insteadDedicated coffee machine descalers (Cafetto, Durgol, brand-specific options) are more effective than vinegar for heavy mineral buildup and leave no taste residue. Follow the product instructions. They are worth it if you live in a hard water area or have not descaled in a long time.

How Often to Descale

Every 1–3 months with daily use in a hard water area. Every 3–6 months with filtered water. Signs you need to descale: longer brew time than usual, reduced coffee temperature, noisy brewing, or the machine has a descale indicator light.

Frequently Asked Questions

Yes — lemon juice is acidic and dissolves scale. Use the same ratio (50% lemon juice, 50% water). Lemon juice may leave a citrus smell that requires more rinse cycles than vinegar. Citric acid powder dissolved in water is an excellent alternative — more effective than vinegar, no smell, and available cheaply from pharmacies and online.
Run more fresh water cycles through the machine. Three cycles are usually sufficient, but machines with complex internal waterways may need 4–5. Make sure you are using a full carafe of water for each rinse cycle and running it all the way through — partial cycles do not flush all the vinegar from the system.