Well, to clarify and not be misrepresented ;-), I certainly never meant to imply companies suggest over-firing. But one man's/stove's over-firing is another's medium burn. Depends on the stove, the fuel, the size of the load, desired cruising temps, etc. Hearthstone recommends a couple hot fast fires a day. This is, after all, your opening quote for Napolean: Napoleon: “Remember. it is more efficient to burn medium sized wood, briskly, and refuel frequently than to load the fireplace with large logs that result in a smoldering, inefficient fire and dirty glass. According to the above description of the four Elm owners, such a cycle might be considered inefficient. So, as I stated, a definition of "efficiency" needs to be given.