What's the Difference Between the Keurig B150 and B150P? The difference lies in the water reservoir. The B150 water reservoir is a simple pour-over tank, whereas the B150P water reservoir contains special mechanical components, including a float valve, which allow for it to be directly connected to a direct water line (and optional filter kit).The [...]

The Keurig K150 and K150P brewer models are exactly the same in all respects but one. The difference is important for those considering which model to buy.