Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't buy this product

My M-53 pump quit after being installed for a little over a year. (Right, just out of warranty!) When I called the plumber who recommended and installed the unit he told me that he no longer recommends Zoeller because he is seeing a lot of them fail afterbeing in use for 2 years and less.I don't know about you, but I expect a sump pump to last more than a year! Zoeller, are you listening? What's the deal here?