The B5 systems contain either tank-in-tank systems or tanks with an internal heat exchanger and differ from one another with respect to the addition of heating.

The system additionally features the following components:

B5 - Swimming pool and combination tank DHW system + space heating

B5.1 - Swimming pool and combination tank DHW system

B5.2 - Swimming pool and combination tank system (tank in tank) for DHW and heating

B5.3 - Swimming pool and combination tank system (tank in tank) for DHW only

B5.5 - Swimming pool system with buffer tank (heating buffer), DHW, and space heating