Instruct: Classify Amazon reviews into positive or negative sentiment
Query: No real warranty - don't buy from Bosch!

Yes, the tankless water heater works well, but the warranty is a sham. Ours is only 3 years old and we have to buy a new one. Called Bosch after our electrician said the electricity was getting to the unit and not to the elements, but Bosch wants additional information that can only be provided by an electrician with a "multimeter" (while iI pay the electrician to be on hold for 40 minutes?!) and then Bosch will UPS parts out....and if that doesn't work they will replace the unit. Hey folks, that's two weeks without hot water! In addition, the folks at Bosch were just plain rude.