http://www.forgreenheat.org/blog.html Read the blog article listed on the sidebar that says "outdoor boilers cleaner than wood stoves". Pay attention to the second paragraph. This refusal to admit things could maybe be better and clinging to technology that doesn't work is exactly what will possibly eliminate the option of burning wood for all of us. I would urge everyone here to get involved in some of the debates going on around the country and encourage all manufacturers to raise the performance bar on their boilers.I would also encourage all of you to take a minute and write your congress person to see what legislation is pending in your state. Get involved. Educate yourself on the issues and take action toward the goal of making wood burning viable part of the energy solution in the future. We ignore stuff like this at our own peril. I'll just post it here in case you can't find it but the entire article is a must read if you want to know what is going on with regulations. Hint....most of it has nothing to do with clean air or low emission levels.... The lead Utah resident pushing for regulations that would allow outdoor boilers, Daniel Leavitt, represented himself as a concerned citizen to the Utah Air Quality Board, and the Utah paper refers to him as a resident who operates his outdoor wood boiler to heat his home. But what the paper didn't mention is that Leavitt is also a prominent Utah lawyer specializing in government relations and the brother of the former Governor of Utah. What's more is that Leavitt is being paid by Central Boiler, the boiler manufacturer leading the campaign.