Alright guys I've been researching quite a lot lately on outdoor wood boilers. Mainly been looking at gasification but I seen a few post about portrage and main. I looked up their gasification unit and gave them a call. First thing the guy told me was about the ultimizer bl20-40. It's not a gasification unit but he says its just about as efficient. I talked to him for awhile and done some more research and I'm really impressed with it. The main thing that bothers me is that there isn't a dealer close. I would have to call the company and have them send me parts if I ever needed something. Also sounds like a good warranty. I was interested in central boiler until I seen the comments about warranty and customer service. So my question is the people with these. Have you had good luck with them and any warranty issues? Any info you can share about these two boilers would be very much appreciated! Thanks!