In a nutshell, Carmine is dishonest. He charged me $800 to install a new floater for the boiler when all he did was clean the old one. In fairness, once he was caught, Camine refunded the money. Here are the details.
I have a rental unit in Brooklyn, and this winter the tenants said the heating system was noisy and a radiator was leaking. I don't live on site and trusted Carmine as I had worked with him previously. He performed annual maintenance on the furnace; had installed a monitoring system for it; and had been helpful when the chimney collapsed. So when he said the furnace needed a new floater, I didn't think twice about it.
But the problem recurred. He made a service call, and the heating system worked properly for a while. Then it happened again--surprising for a new unit. I asked Carmine who manufactured it, where he bought it, was it under warranty, etc. He couldn't recall, didn't have the receipt, uses lots of vendors, etc etc. Finally said it might be defective and that's he would install another brand new one.
Because I don't live on site, people who work on the rental take photos and email them to me, so I can see what was done. One such vendor, who had worked on the unit, had taken photos of the floater. Turns out the brand new floater was the original one that came with the furnace. Same label, same part #, same date. So disappointing.