System M is a true innovation. An air/water heat pump in the 4–16 kW power range. But in truth, it is also much more than that. It is highly efficient, highly modular, using state-of-the-art technology, and features a ground-breaking design that fits into every home – thanks to the smallest exterior unit on the market and a wide range of available colors and materials. System M is radically simple – to select, to install, and to run. System M is also versatile, and available in a range of different versions that offer exactly the right features for every usage scenario.