If coffee tastes flat, takes too long to brew, or the machine sounds louder than usual, it may be time to descale a coffee maker. Mineral buildup blocks water flow and makes the appliance work harder.

Know when to descale a coffee maker

Hard water homes may need descaling every month or two. Softer water can often wait longer, but slow brewing and weak flavor are signs to act.

Use the maker-approved solution

Check the manual first. Many machines accept a commercial descaler, while some basic drip makers can use a diluted vinegar cycle if the manual allows it.

Run the cycle slowly and safely

Empty the basket, add the solution, and run half a brew cycle. Pause for several minutes if the manual suggests soaking, then finish the cycle.

Rinse more than once

Run fresh water through the machine at least two times, or until there is no smell from the solution. Rushing the rinse can ruin the next pot.

Prevent buildup between cleanings

Use filtered water if your tap water is very hard, empty the reservoir after use, and wipe removable parts so coffee oils do not build up.

Quick checklist

• Start with the lowest-risk change first.
• Write down what you changed so it is easy to reverse.
• Review the habit again next month so the fix sticks.

A clean machine brews faster and tastes better. Put a reminder on your calendar so you descale a coffee maker before buildup becomes a repair problem.

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