Pellet boiler comes with everything needed to get it going, except the hopper. Has water heater auger, some piping, some circulator pumps, expansion tanks, Etc. This was working in a different home when I had thought I would put it in and then I went a different direction. So it's at in my basement and then I just decided to remove it and sell. Can plug in I believe to get the electronics working at least. There's a solid fuel company that will service it if you get it going in Southern Maine or even Central Maine