I'm looking for some advice from you guys for installing a wood boiler. Need to get one in this winter, and looking to see which one is right as well get some technical advice. I have a 1600 sq ft. house that is poorly insulated. Currently have a woodstove in the basement with a 8" dedicated chimney. The stove isn't cutting it. I'm looking to start with something used and eventually buy new if it works out. There is a Memco MW100 for sale in my area and I'm wondering if that is right for me. I currently have forced hot water with a tankless set-up. My goal is to have a burn time of about 6-10 hrs, which I know is optimistic, and I'd like to heat the DHW of the boiler as well. Will I need a dedicated heat exchanger for that, or by just hooking into the return on my oil burner will keep the tankless water hot enough. Don't know enough about oil boilers to know if that will heat the tankless DHW or not. I also am wondering if the boiler will produce to much heat and I will need some sort of heat dump, or some way to get rid of excess temperature if it gets too hot. Not sure what will happen if the power goes out as well. The memco is a 120,000 BTU unit, not sure if it is too big or not. I am trying to avoid the pressurized hot water storage design as I would like to keep costs down. Any suggestions on proper size, DHW hook-up, heat dump. Thanks.