Now Includes Free Commissioning What does the Free Commissioning Involve This new free service will see a commissioning engineer taking on the customer service element of the new installation. The engineer's visit can be booked with the BWT commissioning team by either the installer or the customer directly. During the visit, the engineer will check the softener is set up in line with the homeowner's requirements, that it is operating efficiently, take the householder through the basic set-up procedure, explain the features and benefits on the model that has been chosen, and will give the customer the chance to ask any questions they may have. The new scheme is designed to pass the responsibility for the water softener from the installer to BWT, releasing the installer from the .