This is our 3rd instant hot appliance. This one is not as good as previous ones. The button on this one sticks all the time and we have to periodically try to get WD-40 around the button in order for it to work smoothly. If that button gets stuck and you can't get the almost boiling water to stop spewing out it is pretty tricky. At one point we had to turn off the water to the appliance under the sink.