Hey Eric this question is for you or anybody else with pressureized boiler experience. I am building my garage I want to add either and a large pressureized indoor boiler(royall) or pressureized outdoor boiler (royall) to heat my garage, home, and (future pool). I have a burnham oil boiler, with a pressureized logwood (yboc36) coal /wood add on boiler heating my home. I want the garage boiler to heat my home as well. Is this going to be a problem? I do not want to disconect my logwood boiler ( I want to use it when the power goes out gravity feed) Can I use a heat exchanger? or do I have to plumb the garage boiler directly to my current home setup since it is all pressureized.