The customer reported that they were not getting heat to the second floor and believed the expansion tank might need replacement. Upon inspection, I found that the system has one circulator, which was loud and making noise. I also discovered that the boiler had no water pressure. After starting the boiler, I observed that the bottom of the chimney was rotted out and the boiler was not drafting properly. I immediately shut the boiler down. The customer mentioned that they had been noticing odors in the mudroom at times. Underneath the boiler, there were signs of combustion byproducts, giving the appearance that the boiler sections may be separating. The boiler is heavily sooted due to the lack of proper draft. Additionally, the connections on both the indirect water heater and the hot water coil are severely corroded. Given the condition and age of the system, we recommend full boiler replacement. The customer will also need to have a qualified professional inspect the chimney. The b
