I bought this unit after the original unit in the house I purchased broke down. This unit is total junk….worst customer service and product experience I've ever experienced since being a home owner. The first replacement unit never produced hot water. We contacted Whirlpool who, after several hours of phone calls and transfers, sent a Sears technician out to take a look. The technician verified that the electrical and plumbing components had been properly installed in addition to checking that the house electrical supply was sufficient, and it was. Turns out the unit had a faulty heating element. We drained and unhooked the unit and returned it to the store, where a replacement unit was received. We installed the 2nd new unit, which worked for 5 weeks. At this point hot water suddenly just stopped. We checked the unit and noticed that an electrical fire had started near the upper thermostat…the area that the manufacturer pre-wires. We shut the breaker to the unit off and had an electrician check all electrical components (both on the house again and the unit). The electrician verified that everything had been properly connected/installed…this time the unit had a faulty thermostat. After all the labor & money spent getting 2 units installed, uninstalled, drained…etc., Whirlpool refused to provide any type of restitution and stated that we would have to return the unit again and get a 3rd one. Unbelievable. I will never buy another Whirlpool product again. What a shame they've made of a brand name I once believed to be one of the best.