How often should I descale my coffee maker?
You should descale every 3 months or when the Descale notification turns on. The coffee maker has a maintenance alert that reminds you to descale after every 250 brews. The full descaling procedure must be completed to turn off the Descale light. (Page 4-5)
From the official Keurig K-Express Essentials Coffee Maker manual, page 4
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