Absolutely yes please do! Lime scale is the biggest killer in coffee machines and causes 99% of problems. If you live in a hard water area then you’ll need to descale more frequently than in soft water areas. Thermoblock coffee machines are more difficult to descale and it’s advisable to check manufacturer’s instruction before a procedure. However, boilers will need regular cleaning. Aluminium boilers will need specialist cleaning products but stainless steel, brass and copper boilers can be descaled using citric acid or other similar products. Please ask if you are unsure.