# Coffee machine maintenance and descaling > Live situation record from CLSTR: https://clstr.news/situations/coffee-machine-maintenance-and-descaling > Updated: 2026-09-21T14:31:00.000Z. Sources: 9. Developments: 2. Maintenance guidance for coffee machines focuses on descaling and cleaning to prevent limescale buildup and ensure appliance longevity. Initial recommendations suggest using a mixture of equal parts vinegar and water to remove residue, followed by a fresh water rinse. Detachable components like carafes and filter inserts may be cleaned in a dishwasher. Subsequent guidance emphasizes that descaling frequency should be determined by water hardness, which can be measured with pharmacy test strips. General advice suggests cleaning every two to three months, noting that symptoms such as slower flow, unusual noises, or changes in flavor indicate a need for maintenance to avoid permanent damage or bitter coffee. ## Claims - Coffee machines should be cleaned every two to three months as a guideline. (corroborated by 5 sources) - Water hardness level determines the frequency of necessary descaling. (corroborated by 5 sources) - Failure to descale can lead to reduced performance, shorter machine lifespan, and bitter coffee taste. (corroborated by 5 sources) - Slow coffee flow, changes in taste, or strange noises are warning signs of scale buildup. (corroborated by 5 sources) ## Timeline ### 2026-09-21: Coffee machine maintenance: Tips for effective descaling Regular descaling of coffee machines is necessary to prevent damage, ensure longevity, and maintain coffee flavor, with cleaning frequency determined by water hardness. 6 sources. https://clstr.news/cluster/coffee-machine-maintenance-tips-for-effective-descaling ### 2026-08-30: Coffee machine maintenance tips for limescale removal Effective maintenance for filter coffee machines involves using a vinegar and water mixture to descale and clean the device, alongside washing detachable parts in a dishwasher. 3 sources. https://clstr.news/cluster/coffee-machine-maintenance-tips-for-limescale-removal --- Cite as: Coffee machine maintenance and descaling. CLSTR, https://clstr.news/situations/coffee-machine-maintenance-and-descaling