This is my 5th ISE instant hot in 17 years! The first few lasted much longer. the last two didn't even last 2 years and the last 15 months!. I had to order this online bceasue local retailers only sell in satin finish which wouldn't match the chrome faucets. I hope this unit last longer than 15 months-2 years! Also, buying and paying a plumber to install is very expensive. Not particularly wild about the right side button which makes it awkward to depress in some cases.