Welcome. Sure--just push the button (programmable volume control) without a capsule in the machine.
Mod note: moving this one section down...
Josh - Forum Moderator ---------------------------- Bunn Trifecta MB and MCU, Nespresso D90, Baratza Preciso and OE LIDO(s), and that's just what's on the counter... Josh's Pod Guide, K-cup Line-up, and Nespresso Encapsulation
No boiler AFAIK. It's a thermoblock system. I'm sure you're right, Scott. The OP should aim low in terms of volume.
Josh - Forum Moderator ---------------------------- Bunn Trifecta MB and MCU, Nespresso D90, Baratza Preciso and OE LIDO(s), and that's just what's on the counter... Josh's Pod Guide, K-cup Line-up, and Nespresso Encapsulation