I put a Yunca Excel freestanding woodburner in the shed. It is rated at 18Kw and will burn all night on low. We have a smallish Kent in the house and it isn't up to the job but it has a water booster that sure does boil the cylinder if you provoke it. Previous house we had a Masport LE7000 freestander and it was excellent - something like 21Kw and a 16 hour burn time. These guys only pollute if you shut them down tight overnight. Anyways, we are rural. If I was buying again I'd look at a Yunca Wegj.