InSinkErator Instant Hot & Cold 2 Temperature Water Faucet Dispenser Tap, Chrome

I have had the faucet for somewhere over 25 years. It has worked almost almost flawlessly throughout, and still looks as good as the day I bought it. The cold water valve no longer locks in the "on" position, but there is an easy work-around: just put a cup or bottle of dish soap on the lever to block it open when you don't wish to hold it open. We use it 2-10 times daily. Hot tea, instant coffee, or perhaps melting frozen veggies with hot water prior to going on the stove. I also use the hot water side to melt grease off of dishes. It has outlived 3 of the under-sink water heaters. Other reviewers report a short life span on the parts. Perhaps there has been a change in quality over the years. I'd give it a full 5 stars, except for the absence of parts availability. Despite its age, so far as I am aware, this is the only hot water dispenser valve which also dispenses the filtered water in hot and cold, so they get 5 stars on "innovation". I guess innovation counts, regardless of how long ago it was done. There are more little tubes under the sink than you might anticipate, and the valve installs cleanly in the hole where our flexible dish sprayer was located. It seems to have been designed to fit that traditional 2nd hole in the sink. This necessitated installing a new sink faucet with sprayer features built in to the raised spout. Overall, that has proven to be a big improvement also.