Bests & Worsts Reviews from Amazon

I bought these for use with my Keurig K-40 Coffee Maker. They work great, and are a great value. Highly recommended. After cleaning my Keurig recently and inserting a new water filter, I was chagrined to discover that the coffee maker wasn't working properly -- it didn't seem to be priming properly and would whir and whir endlessly, with no output. After a bit of troubleshooting, I realized that air was trapped in the water filter assembly, and was apparently causing the pump not to prime properly. So here's a tip: Follow the directions for preparing a new water filter (soak at least five minutes in tap water and rinse to remove any loose charcoal particles). Then when inserting into the water reservoir, gently "tilt" the filter assembly to near-horizontal. This will allow any air trapped in the filter assembly to escape (evidenced by bubbles). Finally, re-affix the filter to the intake on the bottom of the water reservoir and you should be good to go.