Arrived and checked the system over. The boiler was running. Supply and returns were hot. Pile for hot water going out was hot. There is only a 40 gallon water heater for an apartment with 11 people in it. This is not enough if people are showering back to back at times. Put an estimate in for an 80 gallon indirect replacement. The old one is leaking a little and heavily corroded. As of right now the system is operational.