Branchburner - Yep.. I'm on it! I have the bit between my teeth now with this one and I hope to really work with and encourage our new kiln-kids on the block. They're really wanting to be green about how they burn, using only off-cuts from their own wood to heat the kiln etc. They admit they have a learning curve, which I think is a good thing to be honest about with one of their first customers. I hope to build a good working relationship with them. I'm not surprised you didn't hear back from HETAS, I see them increasingly as one of those token Gov Depts, who look on paper as if they have a purpose... Electrathon - I agree. I think another part of that saving grace may be the fact that only a tiny, tiny number of burners over here have anything resembling a 'smoke dragon'. Wood stoves arrived here recently enough for 99% of burners to have efficient burners.. And on top of that many of them are what I call 'cosmetic burners'. Austroflamm - I dont have the space to be able to CSS all the wood I need, I wish I did, but I enjoy doing as much as I can and have to buy the rest... See earlier on in this thread all about that. With regard to your other interesting question.. There is no monitoring of the emissions from individual rural homes - we don't suffer from poor air quality in rural areas.. they're probably just too sparesely populated in Scotland. Large towns however are smoke-free zones, which means the only solid fuels you're allowed to burn are smokeless coal or wood/pellets in a 'DEFRA-exempt stove'. Whilst HETAS (allegedly) accredit proper stove installers and proper wood and pellet producers, it is DEFRA (Dept of Environment and Rural Affairs) who are responsible for monitoring air quality in specific areas and so part of their work is to make sure people can only buy and install wood stoves whose very low emission rates exempt them from being banned on burning solid fuels in towns (hence the ones you're allowed to use are called 'DEFRA exempt'. I'm not at all sure, but it may be that DEFRA- exemption criteria are actually stricter than the equivalent EPA-approved ones in the US.. Most towns have been smoke free zones since the 1950s and this is enforced by officials who follow through on complaints made by members of the public when they become aware that someone is burning bitumous coal rather than smokeless fuel, or sending out plumes of woodsmoke etc. The 'bad wood in a modern wood stove' scenario I'm highlighting is predominately a rural phenomenon and so I think it's falling between all sorts of cracks that will only be closed tight when customers get wiser and start to complain to wood producers. In short - we need more Brits joining the Hearth.com community and getting a stove-burning 101 As a point of interest, the emissions rate of my Jotul F3 do not meet the specs for DEFRA exemption... In other words, I wouldn't be able to install it if i lived in a smoke free zone.