How to descale a Breville / Sage espresso machine

This guide is the complete descaling walkthrough for every Breville (and Sage, in non-Australian markets) espresso machine — Barista Express, Barista Pro, Barista Touch, Barista Touch Impress, Oracle, Oracle Touch, Oracle Jet, Bambino, Bambino Plus, and the older Dual Boiler. It explains why Breville machines accumulate scale faster than many home users expect, what the descale light actually means (and the surprisingly common problem of it not resetting after descaling), and the model-specific quirks that matter. The descaling procedure is covered step-by-step using Cafetto descaler, with notes on how the procedure differs between the thermoblock machines (Bambino, Barista Express) and the dual-boiler models. The guide also addresses the reset sequences that vary by model — getting the descale light to turn off after a clean is the single most-asked Breville question Coffee Parts gets every week. The article covers descaling frequency based on Australian water conditions and shot volume, what to do if the machine is scaled beyond a simple chemical clean, and when descaling won't save a machine and you need a heating element replacement. Cross-sells include Cafetto descaler, water filters (in-tank cartridges and external systems), replacement gaskets and shower screens (often worth replacing at the same time as descaling), and the Coffee Parts silicone gasket upgrade for owners who want a better portafilter feel.