How often should I descale my Keurig K-Duo brewer?
You should descale your brewer every 3 months or when the descale light comes on, whichever comes first. If you experience low coffee volume or slower performance, it may be time to descale even if 3 months haven't passed. Calcium deposits build up faster in areas with higher mineral content in the water. (Page 6)
From the official Keurig Descale Duo Coffee Maker manual, page 6
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