The CITY MULTI S series (for small applications) and Y series (for large applications) make use of a two-pipe refrigerant system, which allows for system changeover from cooling to heating, ensuring that a constant indoor climate is maintained in all zones.

Y-Series: PUHYPowerful and flexible standard series for free switching between heating or cooling. Standard, High COP and Zubadan models. (Nominal 22.4 - 150kW cooling / 25 - 168kW heating)