A drip coffee maker needs regular cleaning because coffee oil, mineral scale, and water residue can slowly affect brewing speed, heating performance, and taste. White vinegar usually contains about 5% acetic acid, which helps dissolve common calcium scale.

A drip coffee maker should be cleaned regularly because coffee oil, mineral scale, and water residue can affect water flow, heating speed, and taste. White vinegar usually contains about 5% acetic acid, which helps dissolve common calcium deposits caused by hard water.