The Prismacomfort™ blood warmer warms returning blood and makes the necessary adjustments for heat loss and effluent flow during Prismaflex treatments. It warms returning blood efficiently and permits flexible control of temperature. It can detect connected devices automatically. An additional extension line is no longer needed. It is flexible with temperature that can be adjusted from 33 to 43 degrees in 0.5 increments. The system features several languages and switching between them is easy. It also has change sleeves for various applications. The Prismacomfort blood warmer has several sensors that prevent surges in temperature. It is integrated with a self-test and a clear user guidance via an easy-to-use interface. Furthermore, additional disposables are no longer needed. It is made to be used with all Prismaflex sets in treatments where the loss of heat can cause cooling that is not desirable to the patients.