We enjoy having the dual function of the HC-Wave with it's hot or cold feature. We Installed unit with under sink filter so now we get crystal clear water instantly.
Unit installed without too much difficulty and was up and running in about 1 hour. We replaced an old unit that gave us only hot water with the HC-Wave.
Only thing I can say as needing some improvement is the noise the tank makes as it heats - not bad but you definitely can tell when it's heating the water.