This is my first post, but I have been lurking for about a month or more. What a great site you have. Here is my situation. I am planning on beginning construction of my single family home this spring. Based on a lot of reading, talking, and thinking, I have decided to incorporate a wood gasification boiler and whole house radiant heat into the project. Though I am still comparing various boilers, they all seem to vary from one another only relatively slightly. No so with heat storage. My what a gambit. From buying a completely prepackaged system like the OPES-1 from Tarm, all the way to snagging a used dairy farm tank off of ebay and figuring out how to get it shipped. So what are people using. And more importantly, why? From what I have determined, for me, heat storage will become inevitable. I would rather tackle it now, during design and construction. Right now, all I have are pretty pieces of paper with lines drawn on them. So what are the better options, given cost and the fact that, literally, the house can be built around the heat storage? What would you do if you were doing it all over again, and from scratch? Cost is probably the biggest single factor for me. Swallowing the cost of the boiler with promises of the eventual payback has taken me some time, but I am there. Adding to that 40%...50%...60%...for heat storage may force me to rethink the entire premise. Your opinions and perspectives are greatly appreciated. Thank you.