While replacing an older InstaHot, this one installed easily but needed to buy a compression fitting at the hardware store to complete.

Is fairly easy to grab and twist as the knob shape is ergonomic.

Dispenses smoothly and quickly with no air bubbles.

As some have commented, it makes a medium loud Jet-airplane sound when it heats. Does not interfere with talking / TV sound etc.

Price a little high, but what ain't these days !!!

Adjustable temperature on front of tank.