I have a EKO 40 1000 pressurized tank (can,t get temp above 120 maybe piping to small) but that is just the start of all the problems with these things. wood must be small in diameter and 20 inches long (more handling) and it will still bridge and shut down boiler.causing the need to open the door and stir the wood while letting out huge amounts of smoke.They call these indoor units thank God i didn't listen to my guys and put this thing in my basement i would not be able to use it.I put on garage constantly open doors to let smoke out and flue pipe drips water.People that sell this junk say no smoke when gassifing mine smokes all the time, i adjusted air inlet , fan speed everything you can do still smokes. I bought this thing thinking i wont use as much wood compared to a OWB wrong again and i own 100 + acres of Ohio hardwood stupid move should have bought OWB chuck wood in an forget about this thing is a full time job to keep running right. anyone interested in buying this thing i will sell every piece part pumps piping tanks and what ever else i can find assosiated with this thing for $6K over 11k invested call me 330-583-3604 got go stir the wood