Even though the client usually pays the energy costs at the end of the process, HÜDIG's claim is that a groundwater lowering system should work as efficiently and ecologically as possible. Hüdig electric vacuum units are available in two boiler sizes.

The smaller boiler size with 650 l (for operation with one feed pump) and with 912 l boiler volume (for operation with two feed pumps). The electrode control switches wear-free over three levels. It is important to note that the control functions in three planes and makes use of almost the entire boiler diameter. As a result, the individual components such as water pumps and vacuum generators do not switch on and off as frequently. This contributes to the protection of the pumps and the electricity for the starting currents is reduced to a minimum.