I have spent more money trying to fix my Bosch water heater than I paid for it to begin with.The Bosch certified technician working with the Bosch tech service could not fix my unit.After three weeks without hot water, while Bosch was wrong over and over about needing this part or that, I finally just threw the unit in the garbage.For $215 I got a 40 gal. water heater with a 6 year guarantee. This is less than I spent on FedExing parts from Bosch, not counting the $200 cost of useless parts they sent.Run away from this piece of junk as fast as you can.