I have an aluminum model and I have not had any problems for years. I merely wanted an upgrade. I was skeptical of this model based on others reviews, and I received one of the bad ones. For whatever reason it just didn't work. Odd as there are minimal parts, and I checked for obvious clogs, etc. and there did not appear to be any. Perhaps it was the over pressure valve, etc.I went with another option instead, and wouldn't recommend this product, as I had to pay shipping 2x (initial and return) and it isn't worth rolling the dice.