Bosch 250 SX is not for everyone! Bosch Natural Gas Tankless Water Heater Aquastar 250SX

This water heater has been a huge disappointment to me. From the very first,
it has had problems with maintaining the temperature. I simply cannot get it to stay at the nice, warm temperature that I want. Every time I shower, the water changes from really hot, and when I turn it down, it goes to really cold again. There is NO in between with this heater. So it makes showering no fun, it’s impossible to take a long shower without interruption.