I have been running my HT3000 in my 2300 sq ft wood shop with 9 ft ceilings for 2 1/2 seasons. This is an awesome wood stove. This stove maintains 23 C even on the coldest days with no problem. If I could suggest one thing that I think is problematic it would be changing the baffle material to something not as fragile. I have replaced the baffle twice now and its in need of changing again. In a perfect world the baffle would be fine but if when loading you happen to bump the baffle or heat tubes with firewood you run the risk of cracking the baffle. The obvious answer is dont hit the baffle but I dont live in a perfect world. LOL. Other than that I recommend this stove as its a great heater.