The first on market models are inherently noisy because of the pump, not the heating block. Ours was a gift, and was just introduced to market. It is, and always has been, noisy when pumping, not when heating water. There's nothing you can do about this except buy a later version that has this issue worked out. This is why, as a rule, I do not buy first generation products. Descale, when it is needed, or indicated by some Keurig models, but do not overdo it. Using expensive, dollar a bottle, bottled water is silly, unnecessary, and actually adversely affects the flavor of good Arabica coffee. Tap water is best.