Arrived, met with Nathaly and had a brief discussion regarding the issues going on. I proceeded to inspect the heating system to figure out the issue. I pulled both thermostats off the wall the the boiler kept running with the circulator. The issue with the uncontrollable run away heat was a faulty aquastat. I informed Nathaly of the findings. Nathaly was present with me at all times. I proceeded to look over the boiler with its accessory components and the boiler is a train wreck. The boiler is spewing out ash and debris, on its on its way of becoming plugged. I opened up the barometric damper to look inside the exhaust and it’s full of debris. The damper is non operational with the boiler running. The boilers hot water coil is completely rusted out and in a severe state of decay. There’s ash throughout the tops of the unit displaying non existent maintenance. The Extrol expansion tank is rusted out. The boiler does not meet code by not having a back flow preventer separating the boil