I am looking at buying a gassifier boiler, and I came across a tarm excel 2000. It is about 12 years old and has the oil burner plus he had a pellergy pellet gun installed with a 500 lb hopper. He has a brand new ceramic gun (i hope I'm using the right word) that hasn't been installed. He wants 5000 but I am not sure i want to spend that on a used boiler. I have been looking at the eko 25 and can buy one for less than the 5k for the tarm. I kinda like the idea of the back up but will only use it for weekends when I would be away. Maybe once or twice a year. Anyone have advice/input? thanks