They will be working on some buildings that are 9-25 stories high. A newer, younger candidate to the industry will not work, he made that clear several times. They need a good mechanical and electrical background as they will be working on boilers, heat pumps, cooling towers, zone pumps, chillers, roof tops and computer systems. They will be working on old brands of controls and need to have experience with some of them – Automated Building Logic, Niagara, Alerton, Parker Systems, IVU. Johnson Systems. They also deal with all the domestic hot/cold runner water with fixing leaks and pipes.