I have 2 CB 6048 burners 1 for my business and 1 at the house the business burner heats 15,000 sq ft and the house burner is heating around 5000 plus the hot water. My point here is there are other options that are easier and safer than fire wood. I have not burnt any firewood yet this season it's all most january, my situtation is alittle different as we generate wood scraps and loads of saw dust, deliveries produce pallets, we use 30gal garbage bags for the sawdust in an hour or 2 you can bag enough for a couple of weeks. Saw dust burns excellent with alittle scrap mixed in. When it gets real cold 10-20 degrees I'll have to mix firewood in to get the overnight burn. There are opportunities all over to get this kind of fuel source and it's allmost like recycling. PS. there is a learning curve as to how to fire and the damper needs to be adjusted so it doesn't open as far you don't need alot of air. Any Thoughts?