The pipe assembly that can be screwed directly into the heat pump consists of two specially bent pipes that are tailored to the air/water heat pump, with transition pieces for the heating water connection. When installed close to the outside wall, these pipe assemblies that lead out of the side of the heat pump (base frame, blow-out side, right below the fan) can be used to introduce the pipe above ground into the building (thermal insulation required for frost protection). This eliminates the need for underground pipe routing that is standard for introducing the pipe into basement rooms.