Hi all, I've been reading through the forum for months now and have learned a lot, but I was hoping I could get some specific advice. My wife and I are putting up a 2500 sq. ft. modular colonial in Maine this summer. Our builder has included a propane wall-mounted Biasi boiler with on-demand hot water that will be direct vented out of the basement. Since we will be living on 72 acres with plenty of hardwood, we asked to have a single flue chimney as well that we can use with a wood boiler. I really like the Charmaster HW-30 boiler because it comes with the 200 gallon water storage but we just can't afford it. We are trying to figure out what the most efficient system is that we can afford on a small budget. Any advice you can give we would really appreciate.