Coffee machine repair is often simpler than you think. Descaling fixes most flow and pressure issues—mineral buildup from tap water clogs pumps and thermoblocks. Pod machines like Nespresso and Keurig need periodic cleaning of the puncture mechanism. Espresso machines require group head gasket replacement and pump maintenance. Drip coffee makers suffer from mineral scale and worn heating elements. Our guides cover DeLonghi, Breville, Nespresso, and more. Use citric acid or manufacturer descaler; avoid vinegar on espresso machines as it can damage rubber seals.