For this job I came out and conducted a visual plumbing inspection on a commercial space. After performing diagnostics I concluded that the existing 75 gallon water heater is not operational and needs to be replaced it is also tagged by Atlanta gas that it was previously put through a lighting cycle and it never turned back on expansion tank is undersized for the size of the water heater and should have a 4 gallon expansion tank. Expansion tank is also being held up by plumbing and should be strapped to wall. Also there is no visible pressure regulating valve on the system. Mounted wall sink is also not properly mounted to wall and looks like it’s falling a bit. Master trap for lavatory sink is leaking and would recommend replacing.