I am about to install an indoor wood gasification boiler and I found a good deal locally on an HTP indirect Stainless Steel Heat Exchanger for Pool/Spa Heating. I will not be using this for a pool but as a heat exchanger right off of the boiler. Here is a link to this product. http://www.htproducts.com/superstor-ultra-poolheater.html This indirect tank is rated at 200,000 btu output which is more than I need but as I understand it the more output the better. Just wondering if a product like this can be used in place of a flat plate heat exchanger and if there is any advantage or disadvantage to doing so.