I have not had it long and noticed hairline cracks in the glass carafe sometime after simply by brewing coffee day by day. However it appeared inside the carafe and no leaking was present. No weird taste in our coffee so I carried on. Sadly, it has progressed and now there is a huge fracture that is allowing coffee to seep through. I was turning the warmer on as I thought it was designed to do, and I feel it has made it worse. I’m not sure buying a replacement carafe is the most viable option as it seems to be an integrity issue with the glass. So I would assume the same type of carafe needed is going to do the same thing. I’ll have to look for another carafe that can fit under this particular machine and withstand the temperature. The system itself worked fine, but the whole point was to make coffee for large groups AND keep it hot in the carafe so I’m disappointed.