To descale a Keurig machine, turn the machine off, empty the water reservoir, and remove any filters. Add a mixture of equal parts water and white vinegar to the reservoir and run a cycle through the machine, allowing it to drain into a cup. After the cycle runs, clean the machine again by running three cycles of water to remove any residual vinegar taste. Keurig recommends descaling your machine every three to six months, depending on how regularly you use it.
"Scale is a buildup of mineral deposits that naturally occur in most tap water, like magnesium and calcium," Meister says. When water is boiled, the deposits stay behind, building up and clogging water lines in the machine. "This can cause lower-quality brews, machine malfunction, and even permanent damage to the equipment."
Can I use regular K-Cups in all Keurigs?
All Keurig models now use the same type of pods, and coffee drinkers can choose between hundreds of different types of the best K-Cup coffee and other beverages. If you own multiple Keurigs, pods can be used across machines. (The best Nespresso machines, for example, take different pods depending on which line the machine is from.)
If you prefer a reusable option, Meister says, Keurig offers the My K-Cup Filter, which is compatible with most models. "You can fill it with your own ground coffee and use it over and over," she says. "Standard K-Cup pods are only more recently recyclable, and only in certain places, so the reusable filter also feels good from a waste-reduction standpoint."
Can I reuse K-Cups?
K-Cups cannot be reused. These specialized cups contain just enough grounds for a single cup of coffee, so using them more than once would produce a weaker and entirely less delicious beverage. You can try the My K-Cup Universal Filter and fill it with your own ground coffee to reduce plastic waste.