The x-change dynamic terra AW I air/water heat pump is an output controlled, energy-efficient, heat source for installation in buildings. With a newly constructed, innovative 2-part EPP housing, it is convincing with its virtually silent operation. The heat pumps in the x-change dynamic terra AW I series are designed to heat drinking and heating water in one and two-family homes. The “ac” version allows an active cooling function for the warm seasons. The energy required to do so is extracted from the outside air. The sturdy, durable housing is attractive with its straight-line design. With its low noise emissions, space-saving setup dimensions and attractive appearance with rounded edges, it is optimal for installation in areas used for residential purposes. A green splash of colour decorates the discretely two-tone front, symbolising a sustainable “green” heat source. All materials used are designed for ultimate reliability, durability and user-friendliness. The colour touch display of the integrated x-center x40 controller with the especially designed, self-explanatory icons make it very easy to operate.