I apologize up front...but I'm probably going to be asking a ton of questions. I just got a quote to install my Econoburn 150 into my existing gas boiler loop and almost swallowed my tongue! I already bought the wood boiler, the two 1" pex lines are buried and it's too late now to quit. Can anyone give me a clue which pump they would suggest? It's got a Taco 007 on it now and obviously it's too small.?? The grade from the Econoburn to the gas boiler is about a 6-7 foot drop. The length is ~115 feet each way using Wirsbo 1" pex tubing. I insulated the pex with regular pipe insulation (taping the joints) then fed it through 3" pvc, then wrapped it in foil covered insulation (about 1/4 inch thick) then wrapped the whole mess with plastic (bunk silo blanket to be exact). I only used 45 degree bends for the pvc and there are 8 of them in each line. The existing gas boiler is a 90,000 btu unit @ about 80 percent efficient. That seemed important when the guy was figuring the pump size. Of course he won't share that info with me! Let me hear what you think.