Installed Diversatech CP22T, purchased from Revain in October 2015, worked fine until September 2018, then the unit would not turn on. As an auto mechanic and a skilled person, I removed the tank and found that the plastic float arm had rotted and split in two causing the float switch to not work. I live in Idaho and we have pretty good water, so I have to assume the plastic used in the pump is poor quality and lasts a bit longer than the two year warranty. I assume that I expect a life expectancy of 5 years or better. I will no longer buy Diversitech or Utilitech pumps (Lowes version of the same pump).