Vallox has developed a unique automatic defrost MC-system, which does not require pre-heating. Owing to it, the plant was awarded a certificate of energy class A+. That is exactly why Vallox ventilation systems are well-suited for our climate. Vallox MV models can be connected to the Internet and managed online. With the help of a special program that allows to set the clock for the entire week, ventilation can be customised according to your lifestyle. The built-in humidity sensor that measures the level of exhaust air humidity adjusts the fan speed automatically.