How Do I Descale My Keurig Duo?
To descale your Keurig Duo, first, empty any remaining water from the reservoir. Then, fill the reservoir with a mixture of descaling solution and water according to the manufacturer’s instructions. Run a brew cycle without a K-cup using the largest cup size setting. Discard the solution and repeat the brew cycle until the reservoir is empty. Rinse the reservoir thoroughly with water and run several brew cycles using only water to flush out any remaining descaling solution. Finally, clean and wash any removable parts and the external surfaces of the machine with a damp cloth.